CH203436A - Process for improving the water resistance of hardenable synthetic glues. - Google Patents
Process for improving the water resistance of hardenable synthetic glues.Info
- Publication number
- CH203436A CH203436A CH203436DA CH203436A CH 203436 A CH203436 A CH 203436A CH 203436D A CH203436D A CH 203436DA CH 203436 A CH203436 A CH 203436A
- Authority
- CH
- Switzerland
- Prior art keywords
- water
- parts
- weight
- water resistance
- repellent
- Prior art date
Links
- 239000003292 glue Substances 0.000 title claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 10
- 239000005871 repellent Substances 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 11
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- 239000012766 organic filler Substances 0.000 claims 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- 238000009835 boiling Methods 0.000 description 5
- 239000012188 paraffin wax Substances 0.000 description 5
- 235000013312 flour Nutrition 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 229920001807 Urea-formaldehyde Polymers 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920001592 potato starch Polymers 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000130249 Aucoumea klaineana Species 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- HDYRYUINDGQKMC-UHFFFAOYSA-M acetyloxyaluminum;dihydrate Chemical compound O.O.CC(=O)O[Al] HDYRYUINDGQKMC-UHFFFAOYSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940009827 aluminum acetate Drugs 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- QQOWHRYOXYEMTL-UHFFFAOYSA-N triazin-4-amine Chemical class N=C1C=CN=NN1 QQOWHRYOXYEMTL-UHFFFAOYSA-N 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000001993 wax 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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C09J161/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
Verfahren zur Verbesserung der Wasserunempfindlichkeit von härtbaren synthetischen Leimen. In der Patentschrift Nr. 2010:0.7 wurde unter anderem bereits der Zusatz von wasser- abstossienden :Substanzen wie z.
B. Paraffin oder Aluminiumsalzen, zu Bindemitteln auf der Grundhage von h@ärtbaren Aldeihyd- kondensationsprodukten von Aminotriazinen unter Schutz gestellt. Aus dieser Patent schrift ist ersichtlich, :dass diese Zusätze :
eine wesentliche Erhöhung der Kochwasserfestig- keit bewirken.
Es wurde nun ,gefunden, dass es durch derartige Zusätze gelingt, auch bei andern härtbaren Kunstharzleinen :
eine überraschende Verbesserung der Wasserunempfindlichkeit und insbesondere der Kochwaseerfestigkeit zu, erzielen. Dieses Ergebnis tritt insbeson dere bei Kunstharzleimen auf Carbamid- Aldehyd'-Basis zutage, wo:
:die Kochwasser festigkeit beschränkt ist und die Werte der Kochprobe der Verleimungen durch: :das vor liegende Verfahren mehr als verdoppelt wer den können. -Eine analoge Verbesserung der Kochwasserfestigkeit lässt sich auch mit an dern Kunstharzleimenerzielen. Die wasser abstossenden Substanzen können, entweder in feiner Verteilung, sei es in Form. :
einer Emul sion oder ,Suspension, oder in Lösung Iden Kunstharzleimen zugefügt werden, oder man kann, entweder das Bindemittel od er den zur Einverleibung in dasselbe bestimmten Füll stoff oder beide trocken: mit :
einer wasser abweisenden iSubstanz solange zusammen mahlen, bis die Letztere in feiner Verteilung vorliegt. Man kann auch :das Füllmittel allein mit Lösungen von wasserabstossenden Sub- stanzen; in organischen oder wässerigen Lö sungsmitteln imprägnieren oder darauf durch :
doppelte Umsetzung wasserabweisende Sub stanzen in feiner Verteilung einwirken lassen.
Als wasserabweisende Substanzen kön nen verwendet werden: Kohlenwasserstoffe wie Paraffin, chlorierte Ko:hlenwasserstaffe, pflanzlische oder tierische Fette und Öle, Wachse, unlösliche Seifen wie z, B. Alumi- niumstearat, harzsaure Seife wie Aluminium resinat, Aluminiumhydroayd und ähnlich wirkende Substanzen.
Beispiel <I>1:</I> 60 Gewichtsteile Harnstoff werden mit 150 Volumteilen 40 Vol. % iger neutraler Formaldehydlösung im geschlossenen Gefäss auf 98-100' erhitzt, bis eine Probe, mit dem achtfachen Volumen Wasser verdünnt, eine sehwache Trübung zeigt, was gewöhnlich nach ca. 6 Stundender Fall ist.
Diese Lösung wird auf Syrupdioke im Vakuum einge dampft und dann auf Trockenblechen bei tiefer Temperatur im Vakuumsehrank zur Trockne gebracht. Es rasultiert eine schau mige Masse, die sich mit dem dreifachen Ge wicht Wasser klar löst.
Dieses getrocknete Harnstoffharz wird nach Zugabe von 20 Thioharnstoff als Bindemittel für den folgen den Serienversuch verwendet. Selbstverständ- lich können aber andere zweckmässig her- gestelle Harnstoffharze mit ähnlichen Resul- taten verwendet werden.
Als Füller werden .die folgenden Ge mische hergestellt: a) 50 Gewichtsteile Roggenmehl -f- 50 Gewichtsteile Kartoffelstärke, unbehandelt.
<I>b) = a),</I> aber das: Gemisch wird mit 5(M Volumteilen Wasser zu einer gleichmässigen Suspension angerührt. Dann werden 10 Ge- wiehtsteile Marseiller-Seife, gelöst in 1.00 Vo- lumteilen Wasser, -dazugegeben und das Ganze mit 7,5 Gewichtsteilen Aluminium sulfat, das, in wenig Wassergelöst ist, gefällt.
Durch :Sedimentieren, Filtrieren, Trocknen und Pulverisieren wird dieser Füller fertig gestellt.
e) 100 Gewichtsteile Soya-Mehl werden in genau analoger Weise behandelt wie bei b). d) 50 Gewichtsteile Roggenmehl + 50 Gewichtsteile Kartoffelstärke werden mit einer Lösung von<B>10'</B> Gewichtsteilen Montan wachs in 20 Volumteilen Benzin und 20 Vo- lumteilen Aoeton vermischt und an der Luft getrocknet.
e) =a), jedoch wird der Füller mit 10 Volumteilen Paraffinöl zusa.minen.geinahlen. <I>f) = a),</I> jedoch wird der Fülle mit 10 Gewichtsteilen Paraffin, das in 20 Volum- teilen Benzin ,gelöst ist, zusammengemahlen und luftgetrocknet.
g) = a), aber der Füller wird mit 5 Gewichtsteilen Aluminiumacetat trocken zu- sammengemahlen.
<I>h) = a),</I> aber der Füller wird mit 10 Gewichtsteilen einer 20 i:>' igen technischen Paraffinsuspension zus@ammengemahlen und luftgetrocknet.
Es werden nun mit Hilfe von 8 Gewichts teilen Füllstoff und 10 Gewichtsteilen des oben beschriebenen Harnstoffharzes durch Anrühren mit Wasser bis zur Streichfähig keit Holzleime hergestellt. Die Leime werden nun auf der Heizplatte von<B>70'</B> C auf ihre Härtingsfähi.gkeit geprüft und, wo dies nö tig ist, durch Zusatz eines Katalyten (z. B.
Ammonsulfat) auf mö@gliehst gleiche Här- tungsgesehwindigkeit gebracht. Dann wird der Leim auf eine Mittellage (Okoume) für Sperrholz aufgetragen, wobei rund 350 g Leim pro m2 einfacher Leimfuge kommt. Hierauf werden die Oberflächenblätter (Aba- chi)
unter Kreuzung der Fasern aufgelegt und das Ganze 30 Minuten bei<B>98'</B> und ca. 6 kg,/cm' verleimt. Der übliche Kochwaeser- test zeigt, d ass die Koahwasserfestigkeit der nach<I>b)</I> bis<I>h)</I> erhaltenen Sperrholzplatten meist mehr als das Doppelte derjenigen be trägt, die nach a),
das heisst unter Verwen- dung von ohne wasserabstossende Mittel her gestellten Harnstoffleimen erzielt wird. Beispiel <I>2:
</I> 10 Gewichtsteile des nach Beispiel 1 hergestellten Ilarnsstoff-Formaldehyd-Harze@s werden mit 8 Gewichtsteilen eines Füll stoffes,
bestehend aus gleichen Teilen Rog genmehl und Kartoffelstärke und 8 Volum- teilen einer 5%igen technischen Paraffin- suspension zusammengemischt und aus dieser Mischung durch Anrühren mit Wasser bis zur Streichfähigkeit ein Holzleim hergestellt.
Derselbe wird wie in Beispiel 1 beschrieben angewendet und ergibt eine analoge Er höhung der KQchwuserfestigkeit gegenüber dem ohne Zusatz von wasserabstossenden Mitteln erhaltenen Leim.
Das vorliegende Verfahren lässt sich so wohl auf Heiss- wie auf Kaltleime anwenden.
Process for improving the water resistance of hardenable synthetic glues. In the patent specification no. 2010: 0.7, the addition of water-repellent substances such as e.g.
B. paraffin or aluminum salts, to binders on the basis of hardenable Aldeihyd- condensation products of aminotriazines placed under protection. It can be seen from this patent specification: that these additions:
cause a significant increase in the boiling water resistance.
It has now been found that such additives can also be used with other hardenable synthetic resin linen:
to achieve a surprising improvement in the insensitivity to water and, in particular, the resistance to boiling water. This result is particularly evident in the case of synthetic resin glues based on carbamide-aldehyde, where:
: the boiling water resistance is limited and the values of the boiling test of the gluing can be more than doubled by:: the method in hand. -An analogous improvement in boiling water resistance can also be achieved with other synthetic resin glues. The water-repellent substances can either be finely divided or in form. :
an emulsion or suspension or in solution Iden synthetic resin glues can be added, or you can either the binder or the filler intended for incorporation in the same or both dry: with:
Grind together a water-repellent substance until the latter is finely divided. You can also: the filler alone with solutions of water-repellent substances; impregnate in organic or aqueous solvents or on top by:
double implementation allow water-repellent substances to act in a fine distribution.
The following can be used as water-repellent substances: hydrocarbons such as paraffin, chlorinated hydrocarbons, vegetable or animal fats and oils, waxes, insoluble soaps such as aluminum stearate, resin-acidic soap such as aluminum resinate, aluminum hydroxide and similar substances.
Example <I> 1: </I> 60 parts by weight of urea are heated with 150 parts by volume of 40% by volume neutral formaldehyde solution in a closed vessel to 98-100 'until a sample diluted with eight times the volume of water shows a very weak turbidity, which is usually the case after about 6 hours.
This solution is evaporated on Syrupdioke in a vacuum and then brought to dryness on drying trays at low temperature in a vacuum chamber. It shaves off a foamy mass that dissolves clearly with three times the weight of water.
After adding 20 thiourea, this dried urea resin is used as a binder for the series test that follows. It goes without saying, however, that other suitably produced urea resins can be used with similar results.
The following mixtures are produced as fillers: a) 50 parts by weight of rye flour -f- 50 parts by weight of potato starch, untreated.
<I> b) = a), </I> but this: Mixture is stirred with 5 (M parts by volume of water to form a uniform suspension. Then 10 parts by weight of Marseilles soap, dissolved in 1.00 parts by volume of water, are added and the whole thing with 7.5 parts by weight of aluminum sulfate, which is dissolved in a little water, precipitated.
This filler is completed by: sedimenting, filtering, drying and pulverizing.
e) 100 parts by weight of soy flour are treated in exactly the same way as in b). d) 50 parts by weight of rye flour + 50 parts by weight of potato starch are mixed with a solution of 10 parts by weight of montan wax in 20 parts by volume of gasoline and 20 parts by volume of Aoeton and dried in the air.
e) = a), but the filler is also mined with 10 parts by volume of paraffin oil. <I> f) = a), </I> however, the filling is ground together with 10 parts by weight of paraffin, which is dissolved in 20 parts by volume of gasoline, and air-dried.
g) = a), but the filler is dry-ground together with 5 parts by weight of aluminum acetate.
<I> h) = a), </I> but the filler is ground together with 10 parts by weight of a 20% technical paraffin suspension and air-dried.
It will now share with the help of 8 parts by weight of filler and 10 parts by weight of the urea resin described above by mixing with water until it can be spread wood glue. The glues are now checked for their hardening ability on the <B> 70 '</B> C heating plate and, where necessary, by adding a catalyst (e.g.
Ammonium sulfate) brought to the same hardening speed as possible. Then the glue is applied to a middle layer (okoume) for plywood, with around 350 g of glue per m2 of simple glue joint. Then the surface leaves (abachi)
placed under the crossing of the fibers and glued the whole thing for 30 minutes at <B> 98 '</B> and approx. 6 kg / cm'. The usual cookware test shows that the Koah water resistance of the plywood panels obtained according to <I> b) </I> to <I> h) </I> is usually more than double that of a),
this means that urea glues produced without water-repellent agents are achieved. Example <I> 2:
</I> 10 parts by weight of the Ilarnsstoff-Formaldehyde Resin @ s prepared according to Example 1 are mixed with 8 parts by weight of a filler,
Consists of equal parts of rye flour and potato starch and 8 parts by volume of a 5% technical paraffin suspension mixed together and a wood glue made from this mixture by mixing with water until it is spreadable.
The same is used as described in Example 1 and gives an analogous increase in the resistance to swelling compared to the glue obtained without the addition of water-repellent agents.
The present process can be applied to both hot and cold glue.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH203436T | 1936-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH203436A true CH203436A (en) | 1939-03-15 |
Family
ID=4443689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH203436D CH203436A (en) | 1936-09-26 | 1936-09-26 | Process for improving the water resistance of hardenable synthetic glues. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH203436A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2462803A (en) * | 1945-03-23 | 1949-02-22 | Kenneth S Campbell | Fireproofing compositions |
| US2489170A (en) * | 1944-03-07 | 1949-11-22 | Stancal Asphalt & Bitumuls Com | Adhesive composition for paper |
| DE1223535B (en) * | 1961-04-06 | 1966-08-25 | Max Himmelheber Dipl Ing | Process for increasing the glue joint strength of the phenolic and carbamide resin glues used for the manufacture of chipboard |
-
1936
- 1936-09-26 CH CH203436D patent/CH203436A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2489170A (en) * | 1944-03-07 | 1949-11-22 | Stancal Asphalt & Bitumuls Com | Adhesive composition for paper |
| US2462803A (en) * | 1945-03-23 | 1949-02-22 | Kenneth S Campbell | Fireproofing compositions |
| DE1223535B (en) * | 1961-04-06 | 1966-08-25 | Max Himmelheber Dipl Ing | Process for increasing the glue joint strength of the phenolic and carbamide resin glues used for the manufacture of chipboard |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2400058B2 (en) | METHOD OF SIZING PAPER | |
| CH203436A (en) | Process for improving the water resistance of hardenable synthetic glues. | |
| DE3227749C2 (en) | Process for the manufacture of an absorbent material for oils | |
| EP0037055B1 (en) | Hydrophobic agent for flat cellulosic substrate, process for its manufacture and its use | |
| DE585063C (en) | Process for the production of coatings on paper | |
| DE896109C (en) | Process for the production of synthetic materials with phenol-aldehyde resins as binders | |
| DE767897C (en) | Process for the production of press boards, in particular plywood middle layers, from shredded wood waste | |
| DE725650C (en) | Method for gluing materials, in particular plywood | |
| DE1227325B (en) | Process for the production of paper glue based on petroleum resin | |
| DE740316C (en) | Spreadable covering compound for floors and walls | |
| DE909174C (en) | Process for impregnating vegetable pulp fibers with binding agents for the purpose of producing felted fiber products, e.g. Paper, cardboard, or of fiberboard and molded articles | |
| DE493758C (en) | Method of making a waterproofing mixture | |
| DE566671C (en) | Process for the production of alaungarem leather | |
| DE856185C (en) | Process for improving the binder properties of sulphite waste liquor | |
| AT80808B (en) | Method for gluing paper and cardboard. | |
| DE915744C (en) | Process for the production of aqueous polyvinyl acetate dispersions | |
| AT160471B (en) | Process for the production of synthetic compositions from materials such as cellulose, wood, asbestos, leather waste, etc. and for the preservation, in particular of wood. | |
| AT138391B (en) | Process for the production of waterproof, flexible, printable, glossy cardboard and paper with the same properties. | |
| AT55400B (en) | Process for the production of improved "bridges", typesetting and closing material (binding material) for the graphic industry. | |
| AT103334B (en) | Process for the production of pressboard. | |
| DE891359C (en) | Process for gluing paper and cardboard | |
| DE869147C (en) | Process for the production of waterproof cardboard | |
| DE381633C (en) | Process for the production of pressboard | |
| DE749951C (en) | Process for the production of recording paper | |
| AT93741B (en) | Process for the production of a binder for veneers. |