Method of shaping from a mixture of prevulcanized natural rubber

Details Method of shaping from a mixture of prevulcanized natural rubber Method of shaping from a mixture of prevulcanized natural rubber

1998-12-01

2000-07-18

Seidleck, James J.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

26433112, 26433113, 26433116, 264330, 522113, 522 2, C08J 500, C08J 4500, C08F 248

Patent

active

060903287

ABSTRACT:
The tear strength of a vulcanized natural rubber latex shaped article is improved by shaping a mixture of a prevulcanized natural rubber latex and a water-soluble polymer. The prevulcanization of a natural rubber latex may be done by exposure to a radiation. The water-soluble polymer may be selected from the group consisting of polyvinyl alcohol, polyethylene oxide, polyvinyl pyrrolidone and mixtures thereof. The water-soluble polymer may be added to the vulcanized natural rubber latex in an amount of 1-10 parts by weight per 100 parts by weight of the natural rubber.

REFERENCES:
patent: 4010235 (1977-03-01), Yardley et al.
patent: 5215701 (1993-06-01), Gould et al.

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