Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1988-12-23
1991-01-08
Jacobs, Lewis T.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524372, 524375, 524410, 524425, 524451, 524456, 524505, 524513, 524605, C08L 6702, C08K 334, C08K 326
Patent
active
049836609
ABSTRACT:
A highly crystalline polyethylene terephthalate resin composition comprising (A) 100 parts by weight of a polyethylene terephthalate copolymer comprising ethylene terephthalate units as the main recurring units, which is formed by copolymerizing a glycol component containing 1 to 20% by weight of a polyalkylene glycol having an average molecular weight of 500 to 20,000 and 1.2 to 15% by weight of diethylene glycol with a carboxylic acid component composed mainly of terephthalic acid, (B) 5 to 200 parts by weight of a fibrous reinforcer, (C) 0.5 to 130 parts by weight of a nucleating agent, and (D) 0.1 to 60 parts by weight of a crystallization-promoting agent. The resin composition optionally contains 2 to 100 parts by weight of an inorganic compound, 2 to 100 parts by weight of an impact strength improver, 2 to 40 parts by weight of a flame retardant, or 1 to 20 parts by weight of a flame retardant assistant. The resin composition has an improved impact strength, a high heat distortion temperature, and an excellent moldability, and gives a molded article having a good surface appearance even when molding is carried out at a low mold temperature.
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Handa Ryoji
Iwasaki Hitochi
Tajiri Noriyuki
Yoshida Tomohiko
Yoshihiro Mituto
Jacobs Lewis T.
Mitsubishi Rayon Company Ltd.
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