US 5,350,814 A · Unsaturated polyester-epoxy resin network composition

Abstract

A unsaturated polyester resin composition is described that contains an epoxy resin reacted with an amine-terminated flexible polymer while dissolved in the unsaturated polyester resin and its ethylenically unsaturated crosslinking monomer. A compatible system results from the reaction which has a controllable modulus based on the amount of flexible polymer included in the resin. The resin is generally transparent if unfilled and has a higher calculated fracture energy than similar unsaturated polyester resin without modification. The unsaturated polyester resin can be filled with particulate filler or reinforced with fibrous fillers.

Claims19

Dependent claims

A reaction product of a mixture comprising:

a) an unsaturated polyester resin,
b) one or more ethylenically unsaturated monomers,
c) an epoxy resin having 2 or more epoxy groups per molecule,
d) an amine-terminated flexible polymer, said polymer having a tg of 0.degree. C. or less and from about 1.7 to about 3 primary or secondary amine groups per polymer, and
e) a catalyst component for amine-epoxy reactions, and
f) a free radical initiator;
wherein said epoxy resin, said amine-terminated flexible polymer, and said catalyst component for amine-epoxy reactions are reacted in the presence of said one or more ethylenically unsaturated monomers and said unsaturated polyester resin to form a composition having a single Tg value by dynamic mechanical analysis when cured.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

08/103,611Filed 6 Aug 1993 · continuation

Priority

27 Apr 1992

Granted

27 Sep 1994

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

C08L 63/10
Compositions of epoxy resins; Compositions of derivatives of epoxy resins: epoxy resins modified by unsaturated compounds
C08L 63/00
Compositions of epoxy resins
C08L 67/06
Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain ; Compositions of derivatives of such polymers:…
Y10S 525/942
Synthetic resins or natural rubbers -- part of the class 520 series: polymer derived from nitrile, conjugated diene and aromatic co-monomers

Unsaturated polyester-epoxy resin network composition

Life of this patent

Unsaturated polyester-epoxy resin network composition

Life of this patent

Abstract

Claims19