Unsaturated polyester resins

Details Unsaturated polyester resins Unsaturated polyester resins

1981-08-21

1983-06-07

Briggs, Sr., Wilbert J.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

525 43, 525 49, 08G 6376, C08L 6706

Patent

active

043871712

ABSTRACT:
An unsaturated halogenated or non-halogenated polyester resin composition for open lay-up moulding and containing styrene as an agent for cross-linking during curing additionally contains 0.1 to 5% by weight, based on the total weight of the composition, of at least one C.sub.18-40 .alpha.-olefine compound which is theoretically capable of taking part in the cross-linking reaction.
When the composition contains a non-halogenated polyester resin, then the .alpha.-olefine compound itself serves to restrict styrene evaporation from the composition.
For halogenated polyester resin compositions, the .alpha.-olefine, although not usually by itself providing such a marked restriction of styrene evaporation, does allow incorporation into the composition of a waxy compound in an amount sufficiently large to achieve the desired styrene evaporation restriction without deterioration of the adhesion properties of the composition during lay-up.

REFERENCES:
patent: 3553294 (1971-01-01), McGary et al.
patent: 3875094 (1975-04-01), Schroeter et al.
patent: 4269745 (1981-05-01), Neumann
patent: 4285845 (1981-08-01), Russell

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