Natural rubber master batch, production method thereof, and...

Details Natural rubber master batch, production method thereof, and... Natural rubber master batch, production method thereof, and...

2005-01-11

2005-01-11

Mulcahy, Peter D. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S575500

Reexamination Certificate

active

06841606

ABSTRACT:
The natural rubber master batch of the present invention is prepared by mixing a natural rubber latex having its amide linkages cleaved and an aqueous slurry having a filler dispersed in water. Alternatively, the natural rubber master batch is prepared by a method including a step for mixing a natural rubber latex and an aqueous slurry containing dispersed fillers having a specific particle size distribution and a limited range of 24M4DBP absorption. The natural rubber composition of the present invention is prepared by compounding natural rubber, which contains non-rubber components prepared by cleaving amide linkages of natural rubber latex, with silica and/or a particular inorganic filler.

REFERENCES:
patent: 4029633 (1977-06-01), Hagopian et al.
patent: 5908893 (1999-06-01), Kawasaki et al.
patent: 6048923 (2000-04-01), Mabry et al.
patent: 0 584 597 (1994-03-01), None
patent: 11071408 (1999-03-01), None
XP002245219, Feb. 9, 1976.

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