High-molecular unsaturated polyester resin

Details High-molecular unsaturated polyester resin High-molecular unsaturated polyester resin

1992-03-24

1994-12-06

Acquah, Samuel A.

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

Synthetic resins

From carboxylic acid or derivative thereof

528272, 528282, 528296, 528302, 528306, 528308, 5283086, 528350, 528353, 524783, C08G 6352

Patent

active

053711726

ABSTRACT:
An unsaturated alkyd having a number-average molecular weight of at least 5000 and having terminal carboxyl groups is provided by esterification and then deglycolization reaction of an .alpha.,.beta.-unsaturated polybasic acid or an polyhydroxy alcohol followed by reaction with polybasic acid anhydride to substitute more than 10 mole % of terminal hydroxyl groups with carboxyl groups. High molecular weight unsaturated polyester resin is also provided by formulating the unsaturated alkyd with a copolymerizable monomer such as styrene. The polyester resin can be widely used in a various applications by employing the excellent physical properties thereof.

REFERENCES:
patent: Re660 (1981-06-01), Laganis
patent: 2813055 (1957-11-01), Nischk et al.
patent: 4731422 (1988-03-01), Tanabe et al.
Database WPI, Week 7831, Derwent Publications Ltd. AN 78-55841A (31).

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