GB935996A - Improvements in and relating to the manufacture of graft synthetic rubber products - Google Patents
Improvements in and relating to the manufacture of graft synthetic rubber productsInfo
- Publication number
- GB935996A GB935996A GB3675658A GB3675658A GB935996A GB 935996 A GB935996 A GB 935996A GB 3675658 A GB3675658 A GB 3675658A GB 3675658 A GB3675658 A GB 3675658A GB 935996 A GB935996 A GB 935996A
- Authority
- GB
- United Kingdom
- Prior art keywords
- styrene
- monomer
- parts
- copolymer
- graft
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Graft Or Block Polymers (AREA)
Abstract
Graft synthetic rubber products are made by mixing (A) an emulsion of a rubbery copolymer of (i) butadiene (60 to 90 parts) (40 to 10 parts) or (ii) butadiene (60 to 90 parts) acrylonitrile (5 to 35 parts) and styrene (5 to 35 parts), and (B) a monomeric material selected from methyl methacrylate, styrene or a mixture of styrene and methyl methacrylate or acry-lonitrile, the proportion of monomer (B) not exceeding 80% of the weight of copolymer (A), the mixture so-obtained is stirred and/or allowed to stand so as to bring about swelling of the rubber by the monomer, and there is then introduced a catalyst which brings about the polymerization of the monomer, the amount of the monomer (B) being such that the butadiene content of the final composition is at least 45% by weight, and the amount and nature of the catalyst and the temperature at which the process is conducted are chosen so as to produce a graft copolymer which is cross-linked so that it has a gel content between 60 and 90% by weight of the product. In a modification of the process there is used a rubbery copolymer (A) which is first cross-linked in latex form before graft polymerization with the monomer (B). As polymerization catalysts there may be used potassium persulphate and a mixture of cumene hydroperoxide and tetraethylene pentamine. The styrene of copolymer (A) and monomer (B) is preferably styrene itself, but may also be a styrene derivative, e.g. vinyl toluene, alpha-methyl styrene, chlorostyrenes and divinyl benzene. The resulting graft copolymers may be used as processing aids for rubbers and in blends with styrene-acrylonitrile copolymers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3675658A GB935996A (en) | 1958-11-14 | 1958-11-14 | Improvements in and relating to the manufacture of graft synthetic rubber products |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3675658A GB935996A (en) | 1958-11-14 | 1958-11-14 | Improvements in and relating to the manufacture of graft synthetic rubber products |
Publications (1)
Publication Number | Publication Date |
---|---|
GB935996A true GB935996A (en) | 1963-09-04 |
Family
ID=10390949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3675658A Expired GB935996A (en) | 1958-11-14 | 1958-11-14 | Improvements in and relating to the manufacture of graft synthetic rubber products |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB935996A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003064486A2 (en) * | 2002-01-14 | 2003-08-07 | Eastman Chemical Company | Rubber modified acrylic and/or vinyl hybrid resins |
-
1958
- 1958-11-14 GB GB3675658A patent/GB935996A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003064486A2 (en) * | 2002-01-14 | 2003-08-07 | Eastman Chemical Company | Rubber modified acrylic and/or vinyl hybrid resins |
WO2003064486A3 (en) * | 2002-01-14 | 2004-04-22 | Eastman Chem Co | Rubber modified acrylic and/or vinyl hybrid resins |
US7396871B2 (en) | 2002-01-14 | 2008-07-08 | Eastman Chemical Comapny | Rubber modified acrylic and/or vinyl hybrid resins |
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