Styrene/butadiene graft copolymer latex and heat-...

C - Chemistry – Metallurgy – 08 – F

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400/3064, 403/63

C08F 257/02 (2006.01) C08F 2/22 (2006.01) C08F 285/00 (2006.01)

Patent

CA 1266934

ABSTRACT The styrene/butadiene graft copolymer latex of the invention is characterized in that the graft substrate exhibits a comparatively high content of repeating units obtained by polymerization of styrene. The graft copolymer exhibits correspondingly compara- tively hard and soft regions with a high and a low Tg, respectively. The vulcanizable compositions of the invention can be used for production of latex foams distinguished by a low compression set in a temperature range from 20° to 70° C, a high tensile strength, and a high elongation at break, and by a high compression resistance.

498572

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