Polyester type block copolymer composition

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525411, 525437, 525438, 525449, 528297, C08L 6702, C08L 6704

Patent

active

045006865

ABSTRACT:
An improved polyester type block copolymer composition having a rubber-like elasticity, particularly having excellent heat resistance and water resistance, which comprises a polyester type block copolymer produced from a crystalline aromatic polyester and a lactone in melt-admixture with at least one epoxy compound and optionally further with a carboxylic acid compound selected from an ethylene-carboxylic acid copolymer and an aliphatic carboxylic acid metal salt.

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