Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1993-02-18
1996-01-02
Sellers, Robert E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528 93, 528 94, 528103, 528117, 528118, 525 65, 525523, 525524, 525540, 523400, 523407, 523429, C08G 5900
Patent
active
054809576
ABSTRACT:
A curing agent for epoxy resins is prepared from an amine and an epoxy, as well as subsequent modification by a polyisocyanate compound, in such a manner that the curing agent is in the form of small spherical particles. The particles can be as small as 0.1 microns. This curing agent can be easily dispersed in curing agent masterbatches and curable compositions with minimal effect on their storage stability. The resulting curable compositions have a wide range of applications, including automobile and electronic adhesives.
REFERENCES:
patent: 4588617 (1986-05-01), Oka
patent: 4732961 (1988-03-01), Oka
patent: 4844959 (1989-07-01), Read et al.
patent: 4959398 (1990-09-01), Oka et al.
Lee et al. "Handbook of Epoxy Resins" 1982 Reissue pp. 9-10 and 10-17.
Journal of Applied Polymer Science, vol. 32, 5095-5104 (1986)--"Reactivity of Epoxy Resin in Dispersed Dicyandiamide System and Dynamic Viscoelasticity of the Resulting Product"--Souichi Muroi et al.
Muroi Souichi
Tsai Hsi-Chuan
Gulakowski Randy
Looper Valerie E.
Sellers Robert E.
W. R. Grace & Co.,-Conn.
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