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Title: Production of high molecular weight polylactic acid

Patent ·
OSTI ID:870184
 [1]
  1. Joilet, IL
+ Show Author Affiliations

A degradable high molecular weight poly(lactic acid). A poly(lactic acid) has a terminal end group of one of carboxyl or hydroxyl groups with low molecular weight poly(lactic acid) units coupled with linking agents of di-isocyanates, bis-epoxides, bis-oxazolines and bis-ortho esters. The resulting high molecular weight poly(lactic acid) can be used for applications taking advantage of the improved physical properties.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
DOE Contract Number:
W-31109-ENG-38
Assignee:
ARCH Development Corporation (Chicago, IL)
Patent Number(s):
US 5470944
OSTI ID:
870184
Country of Publication:
United States
Language:
English

References (3)

Preparation of a crystalline poly(ester-amide) by the polyaddition reaction of bisoxazoline and a dicarboxylic acid journal April 1966
Chain extenders for polyesters. I. Addition-type chain extenders reactive with carboxyl end groups of polyesters journal August 1985
Polymerization of bis(2-oxazoline) compounds with dicarboxylic acids journal July 1989

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Related Subjects

production
molecular
weight
polylactic
acid
degradable
poly
lactic
terminal
carboxyl
hydroxyl
units
coupled
linking
agents
di-isocyanates
bis-epoxides
bis-oxazolines
bis-ortho
esters
resulting
applications
taking
advantage
improved
physical
properties
polylactic acid
lactic acid
physical properties
molecular weight
weight poly
improved physical
taking advantage
units coupled
linking agent
/528/424/525/