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Title: Water and UV degradable lactic acid polymers

Abstract

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer selected from the class consisting of ethylene glycol, propylene glycol, P-dioxanone, 1,5 dioxepan-2-one, 1,4-oxathialan-2-one, 1,4-dioxide and mixtures thereof. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide wherein the high molecular weight polyethylene oxide is present in the range of from about 2 by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures thereof to an agricultural site is also disclosed.

Inventors:
 [1];  [2]
  1. Joliet, IL
  2. Wheaton, IL
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
870630
Patent Number(s):
5563238
Assignee:
ARCH Development Corporation (Chicago, IL)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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:
water; degradable; lactic; acid; polymers; light; copolymer; monomers; modifying; monomer; selected; consisting; ethylene; glycol; propylene; p-dioxanone; dioxepan-2-one; 4-oxathialan-2-one; 4-dioxide; mixtures; copolymers; useful; waste; disposal; agricultural; purposes; disclosed; blend; polylactic; modified; molecular; weight; polyethylene; oxide; range; 50; suitable; films; method; applying; active; material; seeds; seedlings; pesticides; herbicides; fertilizers; site; acid polymer; propylene glycol; polylactic acid; ethylene glycol; waste disposal; lactic acid; active material; molecular weight; material selected; polyethylene oxide; weight poly; monomer selected; modifying monomer; light degradable; acid polymers; degradable copolymer; degradable lactic; /528/424/428/525/

Citation Formats

Bonsignore, Patrick V, and Coleman, Robert D. Water and UV degradable lactic acid polymers. United States: N. p., 1996. Web.
Bonsignore, Patrick V, & Coleman, Robert D. Water and UV degradable lactic acid polymers. United States.
Bonsignore, Patrick V, and Coleman, Robert D. Mon . "Water and UV degradable lactic acid polymers". United States. https://www.osti.gov/servlets/purl/870630.
@article{osti_870630,
title = {Water and UV degradable lactic acid polymers},
author = {Bonsignore, Patrick V and Coleman, Robert D},
abstractNote = {A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer selected from the class consisting of ethylene glycol, propylene glycol, P-dioxanone, 1,5 dioxepan-2-one, 1,4-oxathialan-2-one, 1,4-dioxide and mixtures thereof. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide wherein the high molecular weight polyethylene oxide is present in the range of from about 2 by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures thereof to an agricultural site is also disclosed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {1}
}

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Works referenced in this record:

The role of hydroperoxides in the photo-oxidation of crosslinked polymer coatings
journal, January 1991


On the kinetics of polymer degradation in solution: Part XI—Radiolysis of poly(olefin sulfones)
journal, January 1984


Polyesters derived from 1,4-oxathian-2-ones
journal, March 1985


Rapidly degraded terpolymers of DL-lactide, glycolide, and ?-caprolactone with increased hydrophilicity by copolymerization with polyethers
journal, October 1990