Process for the preparation of mixes of acrylic rubbers with styrene/acrylonitrile copolymers, endowed with improved impact-resistant characteristics
US4503190A · kind A · utility
2Cited by
2References
2Claims
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Key dates
| Filing date | May 31, 1983 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | May 31, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The impact-resistance characteristics of styrene/acrylonitrile copolymers (SAN) are improved by the admixture to them of acrylic rubbers consisting of either copolymers or terpolymers of ethyl and/or butyl acrylate with acrylic and/or methacrylic acid, by carrying out said mixing in the presence of from 0.05 to 2% by weight of a halide chosen out from among: ZnCl.sub.2, FeCl.sub.3, AlCl.sub.3, CdCl.sub.2, BF.sub.3.(C.sub.2 H.sub.5).sub.2 O; and of 0.5-5 mols, on 100 mols of acrylic rubber, of an epoxy cross-linking compound, at temperatures comprised between the glass transition temperature of the SAN copolymer and 220.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.