Formica Corporation

American Cyanamid Company

Kenneth Robert Huffman

Donald J Casey

Walter Moreland Thomas

Multiblock copolymers having the following general formula: ##STR1## where R represents alkylene and Ar is an aromatic group, are obtained by transesterification of poly(glycolic acid) and an hydroxyl-ended poly(alkylene glycol) such as poly(oxyethylene) in the presence of a catalyst with the degree of polymerization of the copolymer being increased by the subsequent addition of an aromatic orthocarbonate such as tetra-p-tolyl orthocarbonate. The copolymers find use in the manufacture of surgical articles, particularly absorbable monofilament sutures possessing the desired characteristics of flexibility, resulting in good handling properties, and biodegradability.

Poly(glycolic acid)/poly(alkylene glycol) block copolymers and method of

A heat and pressure consolidated structure comprising, in superimposed relationship,

Elastomer modified melamine resin containing laminates

A composition of matter comprising a mixture of a melamine/formaldehyde resin and an elastomer comprising either an ethylene/vinyl chloride copolymer containing amide groups or a polyether-based, polyurethane resin containing carboxyl groups, is disclosed.

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Stamford, CT, United States of America

Kenneth Robert Huffman