US Patent No: 6,048,932

Number of patents in Portfolio can not be more than 2000

Impact modified syndiotactic polystyrene blend

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Abstract

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The present invention relates to an impact resistant polystyrene composition which comprises 5 to 97% by weight of an (a) styrenic polymer having syndiotactic configuration, 2 to 95% by weight of a (b) rubbery elastomer having an olefinic component or a polyolefin, 0.5 to 10% by weight of a (c) styrene/olefin block or graft copolymer 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 (d) poly(phenylene ether); according to the present invention, an impact resistant polystyrene composition can be provided which is greatly enhanced in impact resistance and extensibility without impairing heat resistance and modulus of elasticity.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
IDEMITSU KOSAN CO., LTD.TOKYO1615

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Okada, Akihiko Ichihara, JP 43 489
Sato, Nobuyuki Ibaraki, JP 135 795

Cited Art Landscape

Patent Info (Count) # Cites Year
 
IDEMITSU KOSAN CO., LTD. (13)
5,109,068 Styrene-based polymer composition, stretched molding thereof and process for producing the same 40 1989
5,200,454 Flame-retardant resin composition 30 1990
5,166,238 Styrene-based resin composition 47 1990
5,127,158 Process for producing a printed circuit board with a syndiotactic polystyrene support 33 1990
5,219,940 Styrene polymer composition 44 1991
5,270,353 Resin composition 38 1991
5,391,603 Impact modified syndiotactic vinyl aromatic polymers 36 1993
5,352,727 Syndiotactic polystyrene composition 33 1993
5,418,275 Polystyrene composition 38 1993
5,391,611 Styrenic resin composition 39 1993
5,444,126 Process for producing a modified polyphenylene ether 30 1994
5,436,397 Polystyrene composition 37 1994
5,543,462 Impact resistant polystyrene composition 36 1994
 
KURARAY CO., LTD. (2)
5,089,353 Multi-layer material having gas barrier properties 31 1989
5,346,950 Resin composition 41 1993
 
BANK OF AMERICA, N.A. (1)
4,386,187 Thermoformable polymer blend composition comprising styrene polymer, olefin polymer and block copolymer 58 1981
 
BIOVALEUR SARL (1)
5,326,813 Thermoplastic resin composition containing a modified polyphenylene ether 36 1992
 
GENERAL ELECTRIC COMPANY (1)
4,716,199 Resin composition and articles formed therefrom 8 1986
 
Montedison S.p.A. (1)
4,713,416 Thermoplastic compositions including polyphenylenether, having improved impact strength and processability characteristics 26 1984
 
The Dow Chemical Company (1)
5,412,024 Thermoplastic resin composition 40 1992

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
KIMBERLY-CLARK WORLDWIDE, INC. (3)
7,329,442 Elastomeric gloves having improved donnability 2 2002
7,178,171 Elastomeric gloves having enhanced breathability 4 2002
7,052,642 Composition for forming an elastomeric article 4 2003
 
Nippon Zeon Co., Ltd. (3)
6,365,660 Resin composition and molded or formed product comprising vinyl cyclic hydrocarbon polymer 2 2000
6,500,899 Resin composition comprising vinyl cyclic hydrocarbon polymer 0 2001
6,498,215 Resin composition comprising vinyl cyclic hydrocarbon polymer and a compound having an alcoholic hydroxy group and an ester linkage 1 2001
 
CHURCH & DWIGHT CO., INC. (2)
6,288,159 S-EB-S block copolymer/oil aqueous dispersion and its use in forming articles 16 1997
6,414,083 S-EB-S block copolymer/oil aqueous dispersion and its use in forming articles 5 2001
 
SABIC INNOVATIVE PLASTICS IP B.V. (2)
6,894,102 Syndiotactic polystyrene blends 6 2002
6,849,695 Piping material 0 2002
 
SAMSUNG ATOFINA GMBH & CO. LTD. (2)
6,767,965 Method of preparing monomer-grafted syndiotactic polystyrene with polarity 0 2003
6,780,938 Reactor alloy of syndiotactic polystyrene having high impact resistance 1 2003
 
TEKNOR APEX COMPANY (1)
7,196,137 Polymer compositions 3 2002

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