Glass mat laminate comprised of polymerizable cyclic...

Details Glass mat laminate comprised of polymerizable cyclic... Glass mat laminate comprised of polymerizable cyclic...

2011-07-05

2011-07-05

Gray, Jill (Department: 1798)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

C428S298100, C428S299400, C428S298700

Reexamination Certificate

active

07972685

ABSTRACT:
A composition of a fiber reinforced multi-layered laminate that when compression-molded forms a composite having a Class-A surface that is resin rich. The fiber reinforced multi-layered laminate has an outer layer of a cyclic polyester oligomer containing a latent polymerization catalyst; a glass mat; a core layer of a cyclic polyester oligomer containing a latent polymerization catalyst; a second glass mat, and another outer layer of a cyclic polyester oligomer containing a latent polymerization catalyst. When compression molded, the combination of heat and pressure force the core layer through the permeable glass mats and toward the surface. The latent polymerization catalyst initiates polymerization of the cyclic polyester oligomer forming a Class-A surface that is resin rich. The core layer of a cyclic polyester oligomer thoroughly permeates the reinforcing fiber forming a composite having a middle, with a nearly uniform mixture of reinforced glass fiber and thermoplastic in situ polymerized resin.

REFERENCES:
patent: 4612238 (1986-09-01), Della Vecchia
patent: 4983247 (1991-01-01), Kim
patent: 5464585 (1995-11-01), Fitzgibbon
patent: 6369157 (2002-04-01), Winckler et al.

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