Higher modulus compositions incorporating particulate rubber

Details Higher modulus compositions incorporating particulate rubber Higher modulus compositions incorporating particulate rubber

1994-11-23

1996-04-09

Lipman, Bernard

Abrasive tool making process, material, or composition

5253329, 5253331, 5253332, 525356, 525 425, C08F 822

Patent

active

055062830

ABSTRACT:
Rubber particles, to be used as fillers or extenders for various composite polymer systems, are chlorinated by a gas-solid phase reaction with a chlorine-containing gas. A composite polymer containing the chlorinated rubber fillers or extenders exhibits a higher flexural modulus than if prepared using an unchlorinated rubber filler or extender. Chlorination of the rubber particles is carried out by contacting the finely divided rubber particles with a chlorine-containing gas comprising at least about 5 volume percent chlorine. Advantageously, the chlorine can be diluted with air, nitrogen or other essentially inert gases and may contain minor amounts of fluorine. Improved performance is obtained with nitrogen dilution of the chlorine gas over air dilution. Improved polymer composite systems having higher flexural modulus result from the use of the chlorinated rubber particles as fillers instead of unchlorinated rubber particles.

REFERENCES:
patent: 3553857 (1971-01-01), Pettet et al.
patent: 4501859 (1985-02-01), Newman et al.
patent: 4710538 (1987-12-01), Jorgensen
patent: 4771110 (1988-09-01), Bauman et al.
patent: 4992513 (1991-02-01), Bauer et al.
patent: 4996262 (1991-02-01), Pyke et al.
J. Harper Tervet, et al., "Chlorinolysis Reclaims Rubber of Waste Tires", NASA Tech Brief, vol. 5, No. 3, Item 55 (Jan. 1981).
K. Kinoshita, "Treatment of Rubber Vulcanizate with Chlorine Gas or Hydrogen Chloride Gas", Chem. Abstracts, vol. 78, No. 14 (1972) Columbus.

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