Method of preparing latex for coating paper

Details Method of preparing latex for coating paper Method of preparing latex for coating paper

2006-03-28

2006-03-28

Cain, Edward J. (Department: 1714)

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...

C524S804000, C524S836000, C428S512000

Reexamination Certificate

active

07019072

ABSTRACT:
The present invention relates to styrene-butadienie latex, specifically a method of preparing latex for coating paper which shows excellent adhesion while maintaining printing property and comprised in a composition for coating paper. To achieve the object of the present invention, it provides a method of preparing styrene-butadiene latex comprising the step of emulsion polymerization by adding 0.1 to 10 parts by weight of chain transfer agent comprising; i) monofunctional thiol compound, and ii) polyfunctional thiol compound having at least two thiol groups based on 100 parts by weight of styrene-butadiene monomer composition. The latex prepared by the present method can easily control molecular weight and gel content, so that polymerization stability and mechanical stability are improved and thus, it is possible to print paper with high speed and to improve adhesion.

REFERENCES:
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patent: 2004/0236053 (2004-11-01), Chisholm et al.
patent: 57-153012 (1982-09-01), None
patent: 3-37203 (1991-02-01), None
patent: 3-229703 (1991-10-01), None
patent: 6-107716 (1994-04-01), None
patent: 06-298815 (1994-10-01), None

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