High melt strength elastomeric copolyesters

Details High melt strength elastomeric copolyesters High melt strength elastomeric copolyesters

1981-09-21

1983-05-10

Griffin, Ronald W.

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

Synthetic resins

From carboxylic acid or derivative thereof

528296, C08G 6366, C08G 6318

Patent

active

043831060

ABSTRACT:
An elastomeric copolyester resin having high melt strength and capable of being blow-molded. The copolyester resin is made by adding to the polymerizing or initial mixture small amounts of a heat stable chain branching agent having three or more carboxyl groups, hydroxyl groups, or combinations thereof. The copolyester resin contains units of terephthalic acid, butane diol, polytetramethylene glycol, and dimer acid.

REFERENCES:
patent: 3576773 (1971-04-01), Vaginay
patent: 4217440 (1980-08-01), Barkey
patent: 4254001 (1981-03-01), Tung
patent: 4264751 (1981-04-01), Scheibelhoffer

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