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The stability of solutions in reactive monomers of crosslinkable polyesters containing bisacid A2

✍ Scribed by R. S. Lenk

Publisher: John Wiley and Sons
Year: 1973
Tongue: English
Weight: 425 KB
Volume: 17
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1973.070170617

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✦ Synopsis

Abstract

Earlier papers^1–6^ have dealt with the synthesis and purification of bisacid A2; the preparation of unsaturated polyesters by cocondensing bisacid A2 with maleic anhydride in varying proportions in the presence or absence of phthalic anhydride as a further modifying acid, using propylene glycol as the polyesterification diol; the hardness and the thermal and mechanical properties of cast, cured resins and glass fiber‐reinforced laminates; and the water and chemical resistance of the cured resins. This paper deals with the solution stability of the liquid resins prior to cure and, in particular, with the observed fact that solutions containing esters of bisacid A2 in sufficient quantity do not require the addition of stabilizers commonly needed for commercial polyesters in order to impart an acceptable shelf life to the liquid resins.

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