Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-01-22
1994-05-24
Buttner, David
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525205, 526262, C08L 3500, C08L 3506, C08F22240, C08F12240
Patent
active
053149505
ABSTRACT:
Novel resin compositions are provided which possess excellent heat resistance and thermal color stability, alone, or in admixture with bulk resins. The claimed resin compositions comprise homo- and/or copolymers of N-(2,3-dimethylphenyl) maleimide, alone, or in further combination with resins composed of copolymer components, such as vinyl copolymers and rubber-grafted vinyl copolymer resins. The resin compositions have improved heat resistance and produce molded articles with desirably light colors. Also provided is an improved process to make maleimide monomers by using selected polar solvents whereby the amount of uncyclizable trans-amic acid is held at tolerable levels and the desired maleimide is obtained in high yields, free from by-products.
REFERENCES:
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patent: 5028651 (1991-07-01), Park et al.
Matsumoto "Radial Polymerization of (alkyl substituted phenyl) Maleimides"; Macromolecules 23(21) pp. 4508-4513; Oct. 1990.
Chemical Abstracts 113 (4) 25107e Japanese Patent Publication 02004810 9 Jan. 1990 Mitsunga et al. Manufacture of Maleimide Polymers.
Chemical Abstracts 109 (16) 130219h Japanese Patent Publication 62228865 15 Dec. 1987 Hashimoto et al. Heat Resistant Resin Compositions.
Chemical Abstracts 113 (20) 172952e Japanese Patent Publication 02147610 6 Jun. 1990 Mitsunga et al. Manufacture of Maleimide Polymers.
Chemical Abstracts 114 (15) 138033s Japanese Patent Publication 02240002 25 Sep. 1990 Irigashi et al. N-(Alkylphenyl) Maleimides.
Chemical Abstracts 96 (19) 157434z Japanese Patent Publication 57016804 28 Jan. 1982 Ihara. Chem. Ind. Aralmalemides as antifouling agts.
Chemical Abstracts 112 (01) 4341r Nippon Kagaku Kaishi (9) 1616-9 1989, Igarishi et al. Antimicrobial Maleimide Compounds.
Singh Balwant
Tynik Robert J.
Buttner David
Cytec Technology Corp.
Kelly Michael J.
Lerman Bart E.
Schultz Claire M.
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