Process for producing acid-modified polyphenylene ether and polystyrenic resin composition

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5952431
SERIAL NO

08765443

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A process for producing an acid-modified polyphenylene ether comprising conducting modification reaction substantially in the absence of solvents at 300 to 350.degree. C. by using (a) 100 parts by weight of a polyphenylene ether, (b) 0.1 to 5.0 parts by weight of fumaric acid or a derivative of fumaric acid, and optionally (c) 0.1 to 5.0 parts by weight of a radical generating agent having a half-life of 1 minute at a temperature of 300.degree. C. or higher; and a polystyrenic resin composition comprising (d) 100 parts by weight of a styrenic polymer having the syndiotactic configuration or 100 parts by weight of a component composed of a styrenic polymer having the syndiotactic configuration and a rubbery elastomer and/or a polyamide, (e) 0.5 to 5.0 parts by weight of an acid-modified polyphenylene ether obtained by the above process, and optionally (f) 1 to 350 parts by weight of inorganic filler. A convenient process for producing an acid-modified polyphenylene ether which does not cause deterioration of the working environment, enables stable production, and suppresses decrease in the molecular weight has been developed. A polystyrenic resin composition which can exhibit high toughness is provided by using the obtained acid-modified polyphenylene ether.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
IDEMITSU KOSAN CO., LTD.TOKYO1093

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Okada, Akihiko Ichihara, JP 40 528

Cited Art Landscape

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (6)
* 4684669 Modified polyphenylene ether resins having improved foamability and methods of making the same 7 1986
* 4792586 Impact strength of polyphenylene ether-linear polyester articles 14 1986
* 4814393 Composition of graft modified polyphenylene ether and polycarbonate 4 1987
* 4994531 Functionalized polyphenylene ethers, method of preparation, and polyphenylene ether-polyamide compositions prepared therefrom 12 1987
* 4889889 Trialkylamine salt-functionalized polyphenylene ethers methods for their preparation, and compositions containing them 11 1988
* 5248728 Impact modified polyphenylene ether-polyamide compositions 19 1991
 
BIOVALEUR SARL (1)
* 5326813 Thermoplastic resin composition containing a modified polyphenylene ether 36 1992
 
SABIC INNOVATIVE PLASTICS IP B.V. (1)
* 5216089 Modified polyphenylene ether resins having improved processability and oxidative stability 7 1988
 
IDEMITSU KOSAN CO., LTD. (6)
* 5352727 Syndiotactic polystyrene composition 33 1993
* 5418275 Polystyrene composition 38 1993
* 5444126 Process for producing a modified polyphenylene ether 30 1994
* 5436397 Polystyrene composition 37 1994
* 5543462 Impact resistant polystyrene composition 37 1994
* 5777021 Composition of styrene polymer and polar group-containing polyphenylene ether 10 1997
 
DOW CHEMICAL COMPANY, THE, (50%) (1)
* 5412024 Thermoplastic resin composition 42 1992
 
BASF AKTIENGESELLSCHAFT (2)
* 4751268 Modified carboxyl-containing polyphenylene ether resins 15 1986
* 4957965 Thermoplastic molding materials 21 1988
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
YAZAKI CORPORATION (1)
* 8449328 Thermoplastic elastomer resin composition and connector 7 2010
 
SABIC GLOBAL TECHNOLOGIES B.V. (2)
7524894 Resin composition for wire and cable covering material 4 2003
* 2004/0102,551 Resin composition for wire and cable covering material 21 2003
 
SABIC INNOVATIVE PLASTICS IP B.V. (3)
6894102 Syndiotactic polystyrene blends 6 2002
* 2003/0216,503 Syndiotactic polystyrene blends 0 2002
* 2007/0066,742 Reinforced styrenic resin composition, method, and article 3 2005
 
IDEMITSU KOSAN CO., LTD. (1)
* 2004/0152,838 Chemical-resitant polystyrene resin compositon and molded article 0 2003
 
BASF AKTIENGESELLSCHAFT (1)
6762218 Impact resistant thermoplastic molding materials comprised of syndiotactic polystyrene, glass fibers and thermoplastic elastomer (tpe) impact modifiers 8 2002
* Cited By Examiner