EP 0697865 A1 19960228 - WATER AND UV DEGRADABLE LACTIC ACID POLYMERS
Title (en)
WATER AND UV DEGRADABLE LACTIC ACID POLYMERS
Title (de)
WASSER- UND UV-ABBAUBARE MILCHSÄUREPOLYMERE
Title (fr)
POLYMERES A BASE D'ACIDE LACTIQUE DEGRADABLES A L'EAU ET AUX RAYONS ULTRAVIOLETS
Publication
Application
Priority
US 9204684 W 19920605
Abstract (en)
[origin: WO9325202A1] A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer 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 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.
IPC 1-7
A61K 31/365; C08G 63/08; C08G 63/91; C08L 51/00; C08L 67/00; C08G 63/664; C08L 67/04; C08L 71/02; A01N 25/10
IPC 8 full level
A01G 13/00 (2006.01); A01N 25/10 (2006.01); C05G 3/00 (2006.01); C08G 63/06 (2006.01); C08G 63/08 (2006.01); C08G 63/664 (2006.01); C08L 67/00 (2006.01); C08L 67/04 (2006.01); C08L 71/02 (2006.01)
CPC (source: EP)
C08G 63/06 (2013.01); C08G 63/08 (2013.01); C08G 63/664 (2013.01); C08L 67/04 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
WO 9325202 A1 19931223; AU 2234692 A 19940104; CA 2137244 A1 19931223; EP 0697865 A1 19960228; EP 0697865 A4 19950927; JP H07507827 A 19950831
DOCDB simple family (application)
US 9204684 W 19920605; AU 2234692 A 19920505; CA 2137244 A 19920605; EP 92914551 A 19920605; JP 50140394 A 19920605