AU9114098A - Siloxane block copolymers for printable release coating - Google Patents
Siloxane block copolymers for printable release coating Download PDFInfo
- Publication number
- AU9114098A AU9114098A AU91140/98A AU9114098A AU9114098A AU 9114098 A AU9114098 A AU 9114098A AU 91140/98 A AU91140/98 A AU 91140/98A AU 9114098 A AU9114098 A AU 9114098A AU 9114098 A AU9114098 A AU 9114098A
- Authority
- AU
- Australia
- Prior art keywords
- release coating
- block copolymer
- siloxane block
- present
- printable release
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000576 coating method Methods 0.000 title claims description 34
- 229920001400 block copolymer Polymers 0.000 title claims description 30
- 239000011248 coating agent Substances 0.000 title claims description 27
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 title claims description 27
- -1 polydimethylsiloxane Polymers 0.000 claims description 31
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 28
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 24
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 21
- 239000004970 Chain extender Substances 0.000 claims description 20
- 125000005442 diisocyanate group Chemical group 0.000 claims description 20
- 239000002904 solvent Substances 0.000 claims description 13
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical group OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- 239000007795 chemical reaction product Substances 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- 125000003396 thiol group Chemical class [H]S* 0.000 claims description 7
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 6
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 6
- 125000001153 fluoro group Chemical group F* 0.000 claims description 6
- 125000000446 sulfanediyl group Chemical group *S* 0.000 claims description 3
- 125000003944 tolyl group Chemical group 0.000 claims description 3
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 26
- 239000000463 material Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 13
- 229920001296 polysiloxane Polymers 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 125000004149 thio group Chemical group *S* 0.000 description 4
- 239000005058 Isophorone diisocyanate Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 229920005573 silicon-containing polymer Polymers 0.000 description 2
- 229920006268 silicone film Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- CDVAIHNNWWJFJW-UHFFFAOYSA-N 3,5-diethoxycarbonyl-1,4-dihydrocollidine Chemical compound CCOC(=O)C1=C(C)NC(C)=C(C(=O)OCC)C1C CDVAIHNNWWJFJW-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- 241000283070 Equus zebra Species 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 125000005375 organosiloxane group Chemical group 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 150000003077 polyols Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004447 silicone coating Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- DBGVGMSCBYYSLD-UHFFFAOYSA-N tributylstannane Chemical compound CCCC[SnH](CCCC)CCCC DBGVGMSCBYYSLD-UHFFFAOYSA-N 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/10—Block or graft copolymers containing polysiloxane sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/61—Polysiloxanes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Polyurethanes Or Polyureas (AREA)
- Paints Or Removers (AREA)
- Silicon Polymers (AREA)
Description
WO 99/13015 PCT/US98/17424 1 Title SILOXANE BLOCK COPOLYMERS FOR PRINTABLE RELEASE COATING Background Art Technical Field The present invention relates to printable release coatings. More particularly, the invention relates to a release coating including a siloxane block copolymer synthesized from an organic diisocyanate and certain polydimethylsiloxanes. Description of Related Art Pressure-sensitive adhesives in the form of labels, for example, are typically coated with a release coating on the back side of the label, (i.e., on the side opposite the adhesive). This release coating is in large part responsible for making these adhesive materials removable without the need for excessive force and without causing delamination of the backing or offsetting of the adhesive. To be useful as a release coating, a material generally should have low work of adhesion with the adhesive. Useful release coating materials also have suitable strength and possess good adhesion with the backing of the adhesive material. Finally, useful release coating materials prevent inadvertent transfer of the adhesive to the back (i.e., non-adhesive) surface of the adhesive material. Release coatings make it possible, for example, for pressure-sensitive labels to be repositionable or removable. Silicones are well known as release coatings for tacky materials, e.g., as backing members for pressure-sensitive adhesives. Silicones are composed primarily of alternating silicon and oxygen atoms in the polymeric backbone. Any one of a number of organic groups can be attached to the silicon atoms to create polymers that are referred to as organopolysiloxanes. The simplest polysiloxane, polydimethylsiloxane, is one in which methyl groups are attached to the silicon atom. The physical nature of polysiloxanes depends upon the degree of polymerization and upon the nature of the end WO 99/13015 PCT/US98/17424 2 groups in the polymer, which can range from chemically active to relatively inert. One disadvantage of silicone coatings is that they tend to be expensive. In addition, the force to separate a pressure-sensitive adhesive from a surface treated with silicones is typically in the range of 10 to 40 grams per inch of width, a force much too low for the silicone to be effectively used as a low-adhesion backing. This poor adhesion may be due to the scarcity of polar groups in the organosiloxane polymer. The release characteristics of silicone, therefore, may present problems because the release properties are too good. For example, this can result in a roll of tape not remaining tightly wound, among other disadvantages. Also, the use of a primer layer between the silicone film and the substrate is often needed to help anchor the silicone film to the substrate. As a result, attempts have been made to modify silicone polymers by blending or reacting them with other less effective release materials in order to obtain higher release force values. For example, it is known that siloxane block copolymers may be obtained by combining very specific polydimethylsiloxanes with organic diisocyanates. U.S. Patent No. 4,002,794 to Schwarcz discloses a release coating made of a copolymeric material that is the reaction product of a thio- or mercapto-terminated polyorganosiloxane and a diisocyanate difunctional organic compound. Another example of a siloxane polymer or copolymer that has been used as a release material is fluorine-terminated polyorganosiloxane. U.S. Patent No. 4,810,749 to Pinchuk discloses copolymers with a polymeric backbone having repeating isocyanate groups and repeating fluoroalkylsiloxane. However, modified silicone polymers suffer certain disadvantages. Some modified silicones contaminate a pressure-sensitive adhesive so that it loses its tackiness. Other modified silicones slowly react with a pressure sensitive adhesive, causing inseparability upon aging. Some compositions are hard to reproduce consistently, e.g., the release properties change as the silicone gradually migrates to the surface. Other compositions require such WO 99/13015 PCT/US98/17424 3 high cure temperatures that the substrate on which they are coated may be melted or destroyed. Finally, some compositions are only effective when used in combination with a specific adhesive. Certain substituents create more disadvantages and difficulties with the printable release coatings than others. For instance, the present inventor has discovered that a fluorinated polydimethylsiloxane would have a lower surface energy than a non-fluorinated polydimethylsiloxane and would thus be less printable. As a result, a lesser amount of a fluorinated polydimethysiloxane would be used in constructing the block copolymer. This would, in turn, result in a loss of flexibility in the final polymer, leading to a higher release force with a noisier release, known in the art as a more "chattery" peel. Further, it is advantageous to be able to print on such labels, e.g., with a thermal transfer printer, where the resulting print does not easily rub off or become smudged. Because of the aforementioned disadvantage, fluorinated polydimethylsiloxanes would not be suitable for such applications. In contrast with the prior art, which required end groups on the polydimethylsiloxanes, e.g., fluorine, thio or mercapto groups, the present invention does not require such end groups on the polydimethylsiloxanes in order to obtain effective printable release coatings. The present invention thus avoids the accompanying disadvantages of such end groups. The inventor has found, in fact, that the composition of the present invention works better without the above-mentioned end groups on the polydimethylsiloxane polymer. The present inventor has found that a siloxane block copolymer formed by the reaction of certain polydimethylsiloxanes with an organic diisocyanate is surprisingly successful as a release coating for pressure-sensitive labels. Disclosure of the Invention To achieve these and other advantages, and in accordance with the purpose of the invention as embodied and broadly described herein, the present invention is directed to a printable release coating. The release coating includes a siloxane block copolymer that is the reaction product of (a) WO 99/13015 PCT/US98/17424 4 a polydimethylsiloxane free of thio, mercapto, and fluorine groups and (b) an organic diisocyanate. The present invention further relates to a siloxane block copolymer for use as a printable release coating. The copolymer is the reaction product of (a) a polydimethylsiloxane free of thio, mercapto, and fluorine groups and (b) an organic diisocyanate. The present invention also relates to a method of making a siloxane block copolymer for use as a printable release coating. The method includes the steps of (a) mixing a polydimethylsiloxane with a solvent; (b) mixing a diisocyanate with a solvent; (c) combining the mixture of (a) with the mixture of (b) at a temperature and for a time sufficient to allow the polydimethylsiloxane to react with the diisocyanate; (d) adding a chain extender to the reactants combined in step (c) and maintaining a sufficient temperature for a sufficient time to allow the chain extender to react. Instead of blending materials having either good printability or good release properties, the inventor has synthesized siloxane block copolymers having both properties by reacting a polydimethylsiloxane with an organic diisocyanate. The siloxane segments of the block copolymer provide good release properties, while the polar (urethane and urea) segments provide printability. The above and other advantages and features of this invention will become apparent upon review of the following detailed description. Best Mode for Carrying Out the Invention The present invention relates to a printable release coating including a siloxane block copolymer that is the reaction product of (a) a polydimethylsiloxane free of thio, mercapto, and fluorine groups and (b) an organic diisocyanate. The present invention further relates to a siloxane block copolymer for use as a printable release coating. The copolymer is the reaction product of (a) a polydimethylsiloxane free of thio, mercapto, and fluorine groups and (b) an organic diisocyanate.
WO 99/13015 PCT/US98/17424 5 Polydimethylsiloxanes useful in the present invention include, for example, amine-terminated oligomers and hydroxyl-terminated oligomers. Examples of useful diisocyanates include, but are not limited to, isophorone diisocyanate, diphenylmethyl diisocyanate, toluene diisocyanate, dicyclohexylmethyl diisocyanate, and hexamethylene diisocyanate. The materials used for synthesis of the siloxane block copolymer may also include chain extenders, catalysts, and solvents. A chain extender lengthens the distance between silicone segments in the siloxane block copolymer. In doing so, the chain extender imparts two properties to the block copolymer. First, the chain extender raises the surface energy of the block copolymer. This improves printability. Second, the chain extender imparts flexibility into the block copolymer. This reduces "chattery" (noisy) release as well as release force overall. "Chatter" is the zipping sound often made when tapes or labels are unwound from a roll. The chain extender material used in the present invention may be selected from diols, triols, poly-ols, and their sulfur equivalents. Nitrogen analogues, e.g., diamines, triamines, polyamines, could also be used if a stoichiometric excess of diisocyanate is maintained. Preferably, the chain extender is polyethylene glycol, 1,4-butanediol or a mixture thereof. If the chain extender is polyethylene glycol, it is preferably present in the amount of about 0-50 parts by weight. If the chain extender is 1,4-butanediol, it is preferably present in the amount of about 0-20 parts by weight. Catalysts useful in the present invention include, for example, ferric acetyl acetonate, tributyl tin diacetate, tin octoate, and dibutyl tin dilaurate. Preferably, the catalyst used in the present invention is dibutyl tin dilaurate. The catalyst serves to speed up the reaction and allow the reaction to take place at lower temperatures. The solvents are used in the present invention to make it easier to mix the ingredients for reaction and aid in keeping the final product from solidifying, i.e., keeping its viscosity sufficiently low to make it pourable and coatable. Solvents useful in the present invention include tetrahydrofuran, xylene, and toluene. The preferred solvent is toluene. The solvent is WO 99/13015 PCT/US98/17424 6 preferably present in the amount of about 0-80 parts by weight, preferably in an amount of about 50-80 parts by weight. The release coatings of the present invention may be used to make pressure-sensitive labels. The release composition may be slightly altered to provide the desired release properties and printability for different adhesives and printers. Pressure-sensitive adhesives, for example, could be either repositionable, removable, or permanent. Labels made with the release coatings of the present invention can be printed with a thermal transfer printer. The present invention also relates to a method of making a siloxane block copolymer for use as a printable release coating. The method includes the steps of (a) mixing a polydimethylsiloxane with a solvent; (b) mixing a diisocyanate with a solvent; (c) combining the mixture of (a) with the mixture of (b) at a temperature and for a time sufficient to allow the polydimethylsiloxane to react with the diisocyanate; (d) adding a chain extender to the reactants combined in step (c) and maintaining a sufficient temperature for a sufficient time to allow the chain extender to react. Preferably, the polydimethylsiloxane and the diisocyanate are reacted at a temperature of 60-80oC for 20-40 minutes. More preferably, the reaction time for the polydimethylsiloxane and the diisocyanate is 30 minutes. The chain extender is preferably reacted with the polydimethylsiloxane and the diisocyanate at a temperature of 60-80 0 C for 20-40 minutes, and more preferably for 30 minutes. The present invention is illustrated by way of the following example. It is to be understood that the invention is not to be limited to the specific conditions or details set forth in this example except as such limitations are specified in the appended claims. Example 1 Polydimethylsiloxane (a,w-amine capped, 25.0 g Goldschmidt, MW = 11500) Polyethylene glycol (Dow Chemical, MW = 8000) 12.5 g Isophorone diisocyanate (Olin Chemical) 18.13 g WO 99/13015 PCT/US98/17424 7 1,4-butanediol 6.66 g Dibutyltin dilaurate 0.2 g Toluene 180 ml 12.5 g of polyethylene glycol was dissolved in 50 ml toluene in a 500 ml flask at 60 0 C. Next the polydimethylsiloxane was mixed with 50 ml toluene and the mixture was added into the polyethylene glycol solution. 0.2 g dibutyl tin dilaurate, 18.13 g isophorone diisocyanate and 50 ml toluene were mixed. This mixture was then added into the flask containing the polydimethylsiloxane solution. The temperature was maintained at 60 - 800C for 30 minutes and the solutions allowed to react. Then 6.66 g of 1,4 butanediol was mixed with the remaining 30 ml of toluene and the solution was added to the flask. The temperature was maintained at 60 - 800C for another 30 minutes. The siloxane block copolymer formed in the flask was diluted into a 10% solution with tetrahydrofuran and coated on thermal transfer paper (Consolidated Paper) with a #20 Meyer rod. The siloxane block copolymer release coating may be used with a pressure-sensitive adhesive, e.g., Swift 84425 hot-melt permanent, and is printable with a thermal transfer printer (Zebra 140) and a ribbon (Coding Products TTR 7981). It will be apparent to those skilled in the art that various modifications and variations can be made in the composition and method of the invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided that they come within the scope of the appended claims and their equivalents.
Claims (16)
1. A printable release coating comprising a siloxane block copolymer that is the reaction product of (a) a polydimethylsiloxane free of thio, mercapto, and fluorine groups and (b) an organic diisocyanate.
2. The printable release coating of claim 1, further comprising at least one chain extender.
3. The printable release coating of claim 2, wherein the chain extender is polyethylene glycol present in an amount ranging from greater than 0 to about 50 parts by weight.
4. The printable release coating of claim 2, wherein the chain extender is 1,4-butanediol present in an amount ranging from greater than 0 to about 20 parts by weight.
5. The printable release coating of claim 1, further comprising a catalyst.
6. The printable release coating of claim 5, wherein the catalyst is dibutyl tin dilaurate.
7. The printable release coating of claim 1, further comprising a solvent present in an amount ranging from greater than 0 to about 80 parts by weight.
8. The printable release coating of claim 1, wherein the solvent is toluene.
9. A siloxane block copolymer for use as a printable release coating comprising the reaction product of (a) a polydimethylsiloxane free of thio, mercapto, and fluorine groups and (b) an organic diisocyanate.
10. The siloxane block copolymer of claim 9, further comprising at least one chain extender.
11. The siloxane block copolymer of claim 10, wherein the chain extender is polyethylene glycol present in an amount ranging from greater than 0 to about 50 parts by weight.
12. The siloxane block copolymer of claim 10, wherein the chain extender is 1,4-butanediol present in an amount ranging from greater than 0 to about 20 parts by weight. WO 99/13015 PCT/US98/17424 9
13. The siloxane block copolymer of claim 9, further comprising a catalyst.
14. The siloxane block copolymer of claim 13, wherein the catalyst is dibutyl tin dilaurate.
15. The siloxane block copolymer of claim 9, further comprising a solvent present in an amount ranging from greater than 0 to about 80 parts by weight.
16. The siloxane block copolymer of claim 15, wherein the solvent is toluene.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US92421297A | 1997-09-05 | 1997-09-05 | |
| US08924212 | 1997-09-05 | ||
| PCT/US1998/017424 WO1999013015A1 (en) | 1997-09-05 | 1998-08-25 | Siloxane block copolymers for printable release coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU9114098A true AU9114098A (en) | 1999-03-29 |
Family
ID=25449892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU91140/98A Abandoned AU9114098A (en) | 1997-09-05 | 1998-08-25 | Siloxane block copolymers for printable release coating |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1015522A1 (en) |
| JP (1) | JP2003523413A (en) |
| CN (1) | CN1272126A (en) |
| AU (1) | AU9114098A (en) |
| BR (1) | BR9812158A (en) |
| CA (1) | CA2298469A1 (en) |
| WO (1) | WO1999013015A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6432528B1 (en) | 1998-12-09 | 2002-08-13 | 3M Innovative Properties Company | Variably printed tape and system for printing and applying tape onto surfaces |
| ATE480601T1 (en) * | 2003-12-22 | 2010-09-15 | Dow Corning | SILICONE COMPOSITIONS AND THEIR USE IN THE TARGETED RELEASE OR TRANSFER OF PRINTED OR MOLDED STRUCTURES AND TRANSFER METHODS THEREOF |
| DE102006040846B4 (en) * | 2005-08-31 | 2013-04-18 | Mondi Gronau Gmbh | Extruded film and its use |
| WO2014037279A1 (en) * | 2012-09-04 | 2014-03-13 | Bayer Materialscience Ag | Isocyanatosilanes with thiourethane structure |
| CN104086740B (en) * | 2014-07-09 | 2016-05-04 | 温州柯莱恩科技有限公司 | The preparation method of the organosilicon grafted and modified polyurethane resin of a kind of use for synthetic leather |
| US20210115295A1 (en) * | 2018-01-31 | 2021-04-22 | Dow Global Technologies Llc | Polysiloxane resin composition |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3752135T2 (en) * | 1986-06-20 | 1998-04-16 | Minnesota Mining & Mfg | Block copolymer, process for its preparation, diamine precursors for this process or process for its preparation, and end products containing the block copolymer |
| US5543171A (en) * | 1992-12-14 | 1996-08-06 | Shores; A. Andrew | Process of manufacturing a coated article |
| US5496635A (en) * | 1993-10-12 | 1996-03-05 | Minnesota Mining And Manufacturing Company | Directly printable coating for olefinic polymer films and articles utilizing such coating |
| CA2163611A1 (en) * | 1994-12-15 | 1996-06-16 | Wayne K. Larson | Low surface energy sulfo-polyurethane or sulfo-polyurea compositions |
| JP3917181B2 (en) * | 1995-04-25 | 2007-05-23 | スリーエム カンパニー | Polydiorganosiloxane polyurea segment copolymer and method for producing the same |
-
1998
- 1998-08-25 CA CA002298469A patent/CA2298469A1/en not_active Abandoned
- 1998-08-25 JP JP2000510813A patent/JP2003523413A/en active Pending
- 1998-08-25 AU AU91140/98A patent/AU9114098A/en not_active Abandoned
- 1998-08-25 CN CN 98809688 patent/CN1272126A/en active Pending
- 1998-08-25 EP EP98943314A patent/EP1015522A1/en not_active Withdrawn
- 1998-08-25 BR BR9812158-8A patent/BR9812158A/en not_active IP Right Cessation
- 1998-08-25 WO PCT/US1998/017424 patent/WO1999013015A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003523413A (en) | 2003-08-05 |
| CN1272126A (en) | 2000-11-01 |
| WO1999013015A1 (en) | 1999-03-18 |
| BR9812158A (en) | 2000-07-18 |
| EP1015522A1 (en) | 2000-07-05 |
| CA2298469A1 (en) | 1999-03-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK5 | Application lapsed section 142(2)(e) - patent request and compl. specification not accepted |