Low pressure sheet molding compounds

Details Low pressure sheet molding compounds Low pressure sheet molding compounds

1996-09-04

1998-04-28

Jordan, Charles T.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

2521822, 25218228, 25218229, 525126, 525131, C09K 300, C08F 800, C08F 830

Patent

active

057448167

ABSTRACT:
This invention relates to low pressure sheet molding compounds and, more particularly, to a composition that is moldable at pressures below about 100 psi, said composition being made by combining: (A) an unsaturated prepolymer resin; (B) a monomeric unsaturated polymerizable material containing a terminal ethylene group; (C) a hydroxy-terminated polyester having a molecular weight in the range of about 500 to about 3000; (D) a polyisocyanate; and (E) a polymerization initiator; the mole ratio of NCO groups from (D) to OH groups from (C) being in the range of about 0.1 to about 10.

REFERENCES:
patent: 3873640 (1975-03-01), Owston et al.
patent: 4272619 (1981-06-01), Balle et al.
patent: 4578426 (1986-03-01), Lenz et al.
patent: 5498670 (1996-03-01), Aoyama et al.
patent: 5504151 (1996-04-01), Fisher et al.
patent: 5508315 (1996-04-01), Mushovic

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