Global to push GA events into
skip to main content

Title: Water and UV degradable lactic acid polymers

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer were selected from the class consisting of ethylene and polyethylene glycols, propylene and polypropylene glycols, P-dioxanone, 1,5 dioxepan-2-one, 1,4 -oxathialan-2-one, 1,4-dioxide and mixtures. 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 where 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 to an agricultural site is also disclosed.
Inventors:
;
Issue Date:
OSTI Identifier:
7100739
Assignee:
Arch Development Corp., Chicago, IL (United States) PTO; EDB-94-170384
Patent Number(s):
US 5360892; A
Application Number:
PPN: US 8-102703
Contract Number:
W-31109-ENG-38
Resource Relation:
Patent File Date: 5 Aug 1993
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; 36 MATERIALS SCIENCE; AGRICULTURE; MATRIX MATERIALS; COPOLYMERS; USES; WASTES; BIODEGRADATION; CHEMICAL COMPOSITION; FILMS; CHEMICAL REACTIONS; DECOMPOSITION; MATERIALS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; POLYMERS; 553000* - Agriculture & Food Technology; 360601 - Other Materials- Preparation & Manufacture