Calcium carbonate treated with curing active ingredient

Details Calcium carbonate treated with curing active ingredient Calcium carbonate treated with curing active ingredient

2011-04-12

2011-04-12

Choi, Ling-Siu (Department: 1762)

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...

C524S301000

Reexamination Certificate

active

07923499

ABSTRACT:
Disclosed is calcium carbonate treated with a curing active ingredient, which, when compounded in a rubber, enables to provide good workability (handling) to the rubber and maximize advantageous properties of the rubber attributable to calcium carbonate (e.g., slip resistance) without deteriorating the reinforcing property of the rubber. The calcium carbonated treated with a curing active ingredient is produced by mixing a modified calcium carbonate having its surface treated with a fatty acid or a resin acid and silicic acid and having an average primary particle diameter of 0.01 to 0.5 μm with a curing active ingredient which takes a liquid form at ambient temperature so that the content of the curing active ingredient in the finished product becomes 9.1 to 35 wt %.

REFERENCES:
patent: 2007/0293621 (2007-12-01), Korenaga et al.
patent: S56-104950 (1981-08-01), None
patent: 2005-048102 (2005-02-01), None
patent: 2005048102 (2005-02-01), None
patent: 2004/009711 (2004-01-01), None
patent: 2006/025423 (2006-03-01), None
patent: 2006/077649 (2006-07-01), None
patent: WO 2006077649 (2006-07-01), None
Translation of JP 2005048102, Feb. 2005.

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