DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Production of high molecular weight polylactic acid

Abstract

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.

Inventors:
 [1]
  1. Joilet, IL
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
OSTI Identifier:
870184
Patent Number(s):
5470944
Assignee:
ARCH Development Corporation (Chicago, IL)
Patent Classifications (CPCs):
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61L - METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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/

Citation Formats

Bonsignore, Patrick V. Production of high molecular weight polylactic acid. United States: N. p., 1995. Web.
Bonsignore, Patrick V. Production of high molecular weight polylactic acid. United States.
Bonsignore, Patrick V. Sun . "Production of high molecular weight polylactic acid". United States. https://www.osti.gov/servlets/purl/870184.
@article{osti_870184,
title = {Production of high molecular weight polylactic acid},
author = {Bonsignore, Patrick V},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}

Works referenced in this record:

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