Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-11-21
1977-10-04
Tillman, Murray
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260885, C08L 3102, C08L 5100
Patent
active
040524825
ABSTRACT:
A thermoplastic vinyl chloride polymer composition superior in processing properties is provided. The composition comprises (I) a predominant amount of polyvinyl chloride or a copolymer predominantly comprised of vinyl chloride and (II) a minor amount of two stage sequentially produced methyl methacrylate composite polymer consisting essentially of
1 to 49 wt. % of component A polymerized from a monomer or monomer mixture of 90 to 100 wt. % of methyl methacrylate and 0 to 10 wt. % of at least one copolymerizable unsaturated monomer, said component A having a glass transition temperature of at least 75.degree. C and a reduced viscosity of 1.8 to approximately 10; and
51 to 99 wt. % of component B polymerized onto or in the presence of said component A from a monomer mixture of 55 to 90 wt. % of a methyl methacrylate, 10 to 45 wt. % of an acrylic acid ester and 0 to 20 wt. % of at least one unsaturated monomer copolymerizable with methyl methacrylate and the acrylic acid ester, said component B exhibiting, if polymerized in the absence of said component A, a glass transition temperature of 25.degree. to 80.degree. C and a reduced viscosity of 1.8 to 10.
REFERENCES:
patent: 3833686 (1974-09-01), Grochowski et al.
patent: 3859389 (1975-01-01), Carty et al.
Nielsen: Mechanical Properties of Polymers, Reinhold Publishing Corporation, New York, p. 27.
Encyclopedia of Polymer Science and Technology, John Wiley & Sons, Inc., New York, (1967), vol. 7, p. 461.
Hasegawa Akira
Ide Fumio
Kishida Kazuo
Mitsubishi Rayon Co. Ltd.
Page Thurman K.
Tillman Murray
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