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US 5,856,391 AGranted
Polymer mixture based on polyphenylene ether and talcum
AssigneeGeneral Electric Company
InventorsHendrikus Hubertus Theodoor Maria Ketels, Cinzia Aurora Rita di Fede, Hermannus Bernardus Savenije
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Abstract
The invention relates to a polymer mixture based on a polyphenylene ether, a polystyrene and/or a high-impact polystyrene, an agent to improve the impact strength, and talcum. By using a mixture of two linear block copolymers as agent (C), a polymer mixture is obtained having a favourable combination of low gloss, good impact strength and a good flow in the melt.
Claims6
A polymer mixture comprising:
- (A) 20-60 parts by weight of polyphenylene ether resin;
- (B) 40-70 parts by weight of a polymer selected from the group consisting of polystyrene and high impact polystyrene;
- (C) 5-20 parts by weight of a impact strength agent comprising 35-65% by weight of a linear A-B1-A' block copolymer based on the total weight of the impact strength agent, and 35-65% by weight of a linear A'-B2-A'" block copolymer, wherein A, A', A" and A'" are each independently terminal blocks which are derived from a vinylaromatic compound and have a weight-average molecular weight from 2,000-100,000;
- B1 is a block derived from a conjugated diene monomer;
- B2 is a block derived from one or more alkylene monomers, wherein blocks B1 and B2 have a weight-average molecular weight from 10,000-500,000;
- and
- (D) 2-10 parts by weight of talcum.
4 more elements
A polymer mixture consisting of:
- (A) 20-60 parts by weight of polyphenylene ether resin;
- (B) 40-70 parts by weight of a polymer selected from the group consisting of polystyrene and high impact polystyrene;
- (C) 5-20 parts by weight of a impact strength agent comprising 35-65% by weight of a linear A-B1-A' block copolymer based on the total weight of the impact strength agent, and 35-65% by weight of a linear A"-B2-A'" block copolymer, wherein A, A', A" and A'" are each independently terminal blocks which are derived from a vinylaromatic compound and have a weight-average molecular weight from 2,000-100,000;
- B1 is a block derived from a conjugated diene monomer;
- B2 is a block derived from one or more alkylene monomers, wherein blocks B1 and B2 have a weight-average molecular weight from 10,000-500,000;
- and
- (D) 2-10 parts by weight of talcum.
4 more elements
Dependencies are inferred from the claim text.