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GB1261484A - Polymer blend - Google Patents

Polymer blend

Info

Publication number
GB1261484A
GB1261484A GB680570A GB680570A GB1261484A GB 1261484 A GB1261484 A GB 1261484A GB 680570 A GB680570 A GB 680570A GB 680570 A GB680570 A GB 680570A GB 1261484 A GB1261484 A GB 1261484A
Authority
GB
United Kingdom
Prior art keywords
styrene
dimethyl
polymer
siloxy
block copolymer
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.)
Expired
Application number
GB680570A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Silicones Corp
Original Assignee
Dow Corning Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dow Corning Corp filed Critical Dow Corning Corp
Publication of GB1261484A publication Critical patent/GB1261484A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02Homopolymers or copolymers of hydrocarbons
    • C08L25/04Homopolymers or copolymers of styrene
    • C08L25/06Polystyrene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L87/00Compositions of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
    • C08L87/005Block or graft polymers not provided for in groups C08L1/00 - C08L85/04

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Silicon Polymers (AREA)

Abstract

1,261,484. Polymer blend; vinyl aromatic/ siloxane block copolymers. DOW CORNING CORP. 12 Feb., 1970 [10 March, 1969], No. 6805/70. Headings C3P and C3T. A blend consists of: (A) a vinyl aromatic polymer of the repeating unit formula wherein R<SP>1</SP> is H or methyl.; and G is a monovalent aromatic radical containing 1-3 benzenoid rings which may each have up to 3 aliphatic organic substituents selected from C 1-6 alkyl; cycloalkyl or alkoxy, provided that no substituent which is ortho to the group has more than 1 carbon atom; and (B) a block copolymer of the formula wherein R is a C 1-30 monovalent hydrocarbon; R<SP>11</SP> is a C 1-18 monovalent hydrocarbon; Z is R<SP>11</SP> or a hydroxyl radical; x has an average value of 20-5000; y has an average value of 20-5000; said block copolymer having a molecular weight of 7000-1,000,000, 20-70% by weight being silicon containing units and 30- 80% by weight being units of the organic block; the block copolymer being present as 0À1-20% by weight based on the vinyl aromatic polymer (A), and the monovalent radicals represented by R<SP>1</SP> and G being the same in both (A) and (B). In the examples the block copolymer (B) is prepared by polymerizing styrene with butyllithium in cyclohexane, followed by polymerization of hexamethylcyclotrisiloxane in the presence of the styrene polymer, the resulting product being neutralized with dimethylvinylchlorosilane, to give a dimethylvinylsiloxy terminated polymer, or with acetic acid, to give a silanol terminated polymer. Preferably a proportion of hexamethylcyclotrisiloxane to give at least one trisiloxane unit per polystyrene molecule but not exceeding 40% of the total trisiloxane used is prereacted with the lithium terminated polystyrene. The block copolymer (B) is then added to a solution of commercial polystyrene in toluene, and the solvent evaporated to give a film of the polymer blend. Many other examples are given in. which the organic block is derived from 1-methyl styrene, α-methyl styrene, vinyl naphthalene, 4-propyl styrene, 3-methoxy styrene, 4-phenyl styrene, 3-hexyl-5-methyl styrene, vinyl anthracene, 4-tolyl styrene. or vinyl tetrahydronaphthalene; and the siloxane block is dimethylvinylsiloxy-, dimethylsilanol-, dimethyl phenyl siloxy-, methyl diphenyl siloxy-, dimethyl octadecyl siloxy-, dimethyl (diphenyl) siloxy-, dimethyl tolyl siloxy-, dimethyl #-hydroxyethylsiloxy- and dimethyl hexylsiloxy-terminated poly(dimethylsiloxane).
GB680570A 1969-03-10 1970-02-12 Polymer blend Expired GB1261484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80584469A 1969-03-10 1969-03-10

Publications (1)

Publication Number Publication Date
GB1261484A true GB1261484A (en) 1972-01-26

Family

ID=25192666

Family Applications (1)

Application Number Title Priority Date Filing Date
GB680570A Expired GB1261484A (en) 1969-03-10 1970-02-12 Polymer blend

Country Status (10)

Country Link
AT (1) AT300342B (en)
BE (1) BE747059A (en)
BR (1) BR6915646D0 (en)
CA (1) CA918334A (en)
CH (1) CH536329A (en)
DE (1) DE2011059C3 (en)
FR (1) FR2037752A5 (en)
GB (1) GB1261484A (en)
NL (1) NL7003401A (en)
SE (1) SE347272B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211729A (en) 1976-09-14 1980-07-08 Consortium Fur Elektrochemische Industrie, Gmbh Compositions containing diorganopolysiloxanes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4107227A (en) * 1976-12-09 1978-08-15 Dow Corning Corporation Method for preparing improved polyalphamethyls tyrene-polydiorganosiloxane block copolymers and products thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211729A (en) 1976-09-14 1980-07-08 Consortium Fur Elektrochemische Industrie, Gmbh Compositions containing diorganopolysiloxanes

Also Published As

Publication number Publication date
BE747059A (en) 1970-09-09
CA918334A (en) 1973-01-02
FR2037752A5 (en) 1970-12-31
DE2011059A1 (en) 1970-09-17
SE347272B (en) 1972-07-31
AT300342B (en) 1972-07-25
DE2011059C3 (en) 1974-09-26
BR6915646D0 (en) 1973-01-25
NL7003401A (en) 1970-09-14
DE2011059B2 (en) 1974-02-28
CH536329A (en) 1973-04-30

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