Method for ring opening polymerization using a hydrolase catalyst

Patent 5449743 Issued on September 12, 1995. Estimated Expiration Date:

January 24, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Application

No. 184912 filed on 01/24/1994

US Classes:

528/355, Polymerizing in the presence of a specified material other than a reactant526/89, Polymerizing in the presence of a specified material other than monomer526/204, Material contains heterocyclic compound526/264, Lactam monomer526/266, From monomer containing oxygen as part of a heterocyclic ring526/269, Hetero-oxygen ring compound contains a carbonate group, i.e., -O-C(=O)-O as ring atoms526/271, Acid anhydride528/274, Polymerizing in the presence of a specified material other than reactant528/312, Polymerizing in the presence of a specified material other than reactant528/359Heterocyclic ring compound is a four-membered ring containing one oxygen and three carbon atoms -C-C(=O)-O-C-

Examiners

Primary: Zitomer, Fred

Attorney, Agent or Firm

Mcaulay Fisher Nissen Goldberg & Kiel

International Classes

C08G 063/123
C08G 063/82

Foreign Application Priority Data

1993-01-29 JP

Abstract

In a method for ring opening polymerization in which the polymerization proceeds with the ring opening of a cyclic compound as a monomer, a hydrolase is used as a catalyst.