C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/305, 400/907
C08F 220/12 (2006.01) C08L 33/08 (2006.01)
Patent
CA 1328530
ABSTRACT OF THE DISCLOSURE A novel latex containing a polymer having an exceptional balance of physical properties is prepared by polymerizing at least one unsaturated dicarboxylic acid with a copolymerizable monomer(s) and, optionally, a crosslinking monomer in the presence of an effective amount of a surfactant and an initiator. In a preferred embodiment of the process, the unsaturated dicarboxylic acid is placed all initially in the reactor and a premix containing the copolymerizable monomer(s) and crosslinking monomer(s) is metered into the reactor. The unsaturated dicarboxylic acid employed contains from 4 to about 10 carbon atoms and is used in an amount from about 2 to about 20 weight parts. The amount of the copolymerizable monomer employed is from about 70 to 98 weight parts, and the amount of the crosslinking monomer, if used, is from about 0.5 to about 10 weight parts. The novel polymers have a Tg of from about -20°C. to about -60°C., a percent hysteresis loss of less than about 20%, and a raw polymer tensile strength of at least 300 psi and an elongation of at least 350 percent.
549618
B.f. Goodrich Company (the)
Swabey Ogilvy Renault
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