(19) | |
| (11) | EP 0 276 957 A3 |
(12) | EUROPEAN PATENT APPLICATION |
(88) | Date of publication A3: | | 22.03.1989 Bulletin 1989/12 |
(43) | Date of publication A2: | | 03.08.1988 Bulletin 1988/31 |
(22) | Date of filing: 22.01.1988 |
| (51) | International Patent Classification (IPC)4: C08F 214/22, C08F 220/10 // (C08F214/22, 220:10),(C08F220/10, 214:22) |
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(84) | Designated Contracting States: | | DE FR GB IT |
(30) | Priority: | 22.01.1987 JP 12931/87
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(71) | Applicant: JAPAN SYNTHETIC RUBBER CO., LTD. | | Tokyo 104 (JP) |
| (72) | Inventors: | | - Miyabayashi, Toshio
Yokkaichi-shi (JP) - Sakabe, Nobuyuki
Yokkaichi-shi (JP) - Zen, Shinichiro
Yokkaichi-shi (JP)
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(74) | Representative: Clifford, Frederick Alan et al | | MARKS & CLERK,
57/60 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB) |
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(54) | Vinylidene fluoride-acrylic acid ester copolymer, process for producing the same and composition containing the same |
(57) A substantially random, linear vinylidene fluoride-acrylic acid ester copolymer comprising:
(A) 5-85% by weight of a vinylidene fluoride unit,
(B) 15-950/0 by weight of at least one unit selected from the group consisting of an alkyl acrylate unit and an alkoxy-substituted alkyl acrylate unit, and
(C) optionally 10% by weight or less, based on the total weight of (A), (B) and (C), of a crosslinking monomer unit, and having an intrinsic viscosity of 0.01-10 dl/g as measured at 30° C in N,N-dimethylformamide.
Said copolymer has not only excellent heat resistance, ozone resistance and sour gasoline resistance but also excellent resistance to gasoline permeation.