Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2005-06-21
2005-06-21
Feely, Michael J. (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C528S119000, C528S120000, C528S121000, C528S122000, C528S123000, C528S418000, C528S421000, C564S336000, C564S384000, C564S388000
Reexamination Certificate
active
06908982
ABSTRACT:
An object of the present invention is to provide an amino composition which provides, when used as a curing agent for epoxy resin, a long pot life and an excellent appearance of a coating film to an epoxy resin composition without deteriorating the reactivity of the composition. The amino composition is obtained by addition reaction of diamine such as metaxylylenediamine and 1,3-bis(aminomethyl) cyclohexane and styrene, wherein the content of the diamine is less than 15% by weight based upon the total weight of the amino composition and the content of 1-addition product of having one phenethyl group is 50 to 100% by weight based upon the total weight of amino compound(s) obtained by the addition reaction.
REFERENCES:
patent: 4034040 (1977-07-01), Cronin et al.
patent: 6562934 (2003-05-01), Yonehama et al.
patent: 2002/0055605 (2002-05-01), Yonehama et al.
Database WPI, Section Ch., Week 197124 Derwent Publications Ltd., London, Great Britain: AN 1971-41876S XP002256787 & JP 46 021857 A (Showa Denko K K).
Patent Abstracts of Japan, vol. 1998, No. 06, Apr. 30, 1998 & JP 10 045878 A (Fuji Kasei Kogyo KK), Feb. 17, 1998.
Echigo Masatoshi
Ichikawa Tetsushi
Kuwahara Hisayuki
Feely Michael J.
Mitsubishi Gas Chemical Company Inc.
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