US 2014/0275436 A1 · Fast degradable polyester polymer and preparation method and use thereof

Abstract

A rapidly degradable polyester polymer and its preparation methods and applications are disclosed. The polyester polymer of the present invention is made by poly-condensation of repeat structure units, each of which consists of a non-degradable block A and degradable block B. The polyester polymer not only has good machinery processing performance, but also can be quickly degraded in appropriate of environment, thereby effectively resolve the environment pollution problems resulted in the used of polyester polymers. It satisfies the wide application demands and especially ensures such polymer can be used for beverage bottle, food package films, shopping bags and other food package containers. In addition, the method of preparation in present invention is simple, low-cost, and the raw materials are easily obtainable at low price. It is suitable for volume production and has practical value and application potentials.

Claims20

Dependent claims

1-12. (canceled)

A polymer or copolymer having a form of (-AB—)n, made from poly-condensation of blocks A and blocks B in repeated structure units, wherein the block A has a structure of Formula (I):

the block B has a structure of Formula (II):
and the polymer or copolymer (-AB—)n has a structure of Formula (III):
wherein
p, m, s, r and u are integers greater than 0 but smaller than 11;
t is an integer greater than 1 but smaller than 31;
n is an integer greater than 1;
and
R, R1, R2, R3, R4, R5, R6, R7 in each of the structural units are independently selected from H, substituted or un-substituted alkyl, substituted or un-substituted heteroalkyl, substituted or un-substituted cycloalkyl, substituted or un-substituted heterocycloalkyl, substituted or un-substituted aryl and substituted or un-substituted heteroaryl, substituted or un-substituted alkoxy, ester, nitro, amine, amide, or thiol.

5 more elements

Dependencies are inferred from the claim text.

Fast degradable polyester polymer and preparation method and use thereof

Life of this patent

Fast degradable polyester polymer and preparation method and use thereof

Life of this patent

Abstract

Claims20