EP 0577627 A4 19940914 - IONICALLY AND COVALENTLY CROSSLINKED BIODEGRADABLE BARRIER FILMS OF IONOMER POLYMER
Title (en)
IONICALLY AND COVALENTLY CROSSLINKED BIODEGRADABLE BARRIER FILMS OF IONOMER POLYMER
Publication
Application
Priority
US 67660791 A 19910328
Abstract (en)
[origin: WO9217422A1] An encapsulated water soluble fertilizer which comprises a polymeric film of about 2 to about 100 micrometers coated on a surface of said fertilizer, said polymeric film comprising a covalently crosslinked sulfonated polymer having about 10 to about 200 meq of sulfonate groups per 100 grams of said covalently crosslinked sulfonated polymer, said sulfonate groups being neutralized with a polycaprolactone polymer being characterized by formula (I) wherein R1 and R2 is an alkyl, cycloalkyl or aryl group; R3, R4, and R5 are a hydrogen or alkyl, cycloalkyl, or aryl groups; m equals 1 to 20 and n equals 1 to 500.
IPC 1-7
IPC 8 full level
A01N 25/26 (2006.01); C05G 3/00 (2006.01); C08F 8/44 (2006.01); C08L 23/32 (2006.01)
CPC (source: EP)
A01N 25/26 (2013.01); C05G 5/37 (2020.02); C08F 8/44 (2013.01); C08L 23/32 (2013.01)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 9217422A1
Designated contracting state (EPC)
BE DE DK FR GB IT NL
DOCDB simple family (publication)
WO 9217422 A1 19921015; CA 2104688 A1 19920929; EP 0577627 A1 19940112; EP 0577627 A4 19940914; NO 933437 D0 19930927; NO 933437 L 19931108
DOCDB simple family (application)
US 9200045 W 19920103; CA 2104688 A 19920103; EP 92906040 A 19920103; NO 933437 A 19930927