Process for production of olefin-terminated polyesters

Details Process for production of olefin-terminated polyesters Process for production of olefin-terminated polyesters

1990-10-12

1992-01-14

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528355, 546318, 546327, 549 71, 549484, 549486, 560 81, 560103, 560185, C08G 6308

Patent

active

050812246

ABSTRACT:
This invention relates to processes for producing an olefin-terminated polyester. In one of the processes which comprises reacting an olefin-terminated diester compound with a lactone in the presence of a polymerization catalyst with transesterification ability, the lactone is in a limited amount added to the reaction system. In another process which comprises reacting an olefin-terminated diester compound, a lactone compound, a cyclic acid anhydride and an epoxy compound in the presence of a polymerization catalyst with transesterification ability, the lactone, cyclic acid anhydride and epoxy compound are each in a limited amount added to the reaction system. In accordance with this invention, olefin-terminated polyesters having high terminal modification rates can be synthesized.

REFERENCES:
patent: 4663429 (1987-05-01), Murai et al.
patent: 4835213 (1989-05-01), Murai et al.

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