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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
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

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