Epoxy resin systems modified with low viscosity statistical mono

Details Epoxy resin systems modified with low viscosity statistical mono Epoxy resin systems modified with low viscosity statistical mono

1991-03-22

1992-08-18

Bleutge, John C.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525113, 525114, 525118, 525119, 525120, 525121, 525122, 525502, 528103, 528111, 528112, 528113, 528114, 528115, 528120, 528123, 528393, C08F 800

Patent

active

051400685

ABSTRACT:
Curable epoxy resins are toughened with statistical monofunctional carboxyl, amine or epoxy terminated reactive polymers and have low viscosities before cure thereby making them useful in a wide range of applications. The cured epoxy resin systems which are modified by the statistical monofunctional reactive polymers have physical properties, such as adhesion and elongation, generally equal to or better than those of cured epoxy resin systems modified with statistical difunctional reactive polymers. A process of preparation for the modified epoxy resin systems of the present invention includes admixing an epoxy resin with a statistical monofunctional carboxyl, amine, or epoxy-terminated reactive polymer in the presence of a curing agent and reaction therewith to form the toughened, cured epoxy resin system.

REFERENCES:
patent: 2565573 (1951-08-01), Pease et al.
patent: 2586995 (1952-02-01), Robertson
patent: 3285949 (1966-11-01), Siebert
patent: 3465058 (1969-09-01), McCarthy
patent: 3823107 (1974-07-01), Cotton
patent: 4039527 (1977-08-01), Nagaoka et la.
patent: 4045427 (1977-08-01), Sheppard et al.
patent: 4075286 (1978-02-01), MacLeay et al.
patent: 4684717 (1987-08-01), Ashitaka et al.
An article entitled "The Chemistry of Rubber-Toughened Epoxy Resins," by A. R. Siebert and C. K. Riew.

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