Claims
- 1. An impact resistant polystyrene composition which comprises:
- 5 to 97% by weight of (a) a styrenic polymer having syndiotactic configuration selected from the group consisting of polystyrene, poly(alkylstyrene), poly(halogenated styrene), poly(halogenated alkylstyrene), poly(alkoxystyrene), poly(vinyl benzoate) and hydrogenated polymers thereof;
- 2 to 95% by weight of (b) at least one rubber selected from the group consisting of polyolefin, natural rubber, modified natural rubber, polybutadiene, polyisoprene, neoprene, hydrogenated styrene/butadiene/styrene block copolymer (SEBS), styrene/isoprene styrene block copolymer (SIS), hydrogenated styrene/isoprene/styrene block copolymer (SEPS) ethylene/propylene rubber (EPM) and ethylene/propylene/diene rubber (EPDM);
- 0.5 to 10% by weight of (c) at least one rubber selected from the group consisting of maleic anhydride-modified SEBS, epoxy-modified SEBS, styrene/butadiene block copolymer (SBR) and styrene/butadiene/styrene block copolymer (SBS), said component (c) having a micro-phase separation temperature of up to 180.degree. C. when diluted with dioctyl phthalate to a solution with a concentration of 60% by weight; and
- 0.5 to 5% by weight of a (d) poly(phenylene ether).
- 2. An impact resistant polystyrene composition which comprises 100 parts by weight of a resin composition comprising 5 to 95% by weight of an (a) styrenic polymer having syndiotactic configuration, 2 to 95% by weight of (b) rubbery elastomer derived by polymerization of monomers comprising an olefinic component or a polyolefin, 0.5 to 10% by weight of a (c) at least one rubber selected from the group consisting of maleic anhydride-modified SEBS, epoxy-modified SEBS, styrene/butadiene block copolymer (SBR) and styrene/butadiene/styrene block copolymer (SBS), said component (c) having a micro-phase separation temperature of 180.degree. C. at the highest when diluted with dioctyl phthalate to a solution with a concentration of 60% by weight, and 0.5 to 5% by weight of a (d) poly(phenylene ether); and 0.5 to 350 parts by weight of an (e) inorganic filler.
- 3. The impact resistant polystyrene composition according to claim 1 wherein the component (c) is contained in an amount of 1 to 50 parts by weight per 100 parts by weight of the component (b).
- 4. The impact resistance polystyrene of claim 2, wherein said styrenic polymer having syndiotactic configuration is selected from the group consisting of polystyrene, poly(p-methylstyrene), poly(m-methylstyrene), poly(p-tert-butylstyrene), poly(p-chlorostyrene), poly(m-chlorostyrene), poly(p-fluorostyrene) and hydrogenated polymers thereof.
Priority Claims (1)
Number |
Date |
Country |
Kind |
6-240972 |
Oct 1994 |
JPX |
|
Parent Case Info
This application is a Divisional of application Ser. No. 08/648,017, filed on May 31, 1996, now U.S. Pat. No. 5,777,028 which was filed as an International Application PCT/JP95/02029 on Oct. 4, 1995.
US Referenced Citations (20)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0 318 793 |
Jun 1989 |
EPX |
0 324 398 |
Jul 1989 |
EPX |
0 6116 454 |
Apr 1994 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
648017 |
|
|