EP 0000021 B1 19800723 - PROCESS FOR THE PREPARATION OF SULFONIC ACID GROUPS AND PHOSPHONATE GROUPS BEARING POLYISOCYANATE MIXTURES
Title (en)
PROCESS FOR THE PREPARATION OF SULFONIC ACID GROUPS AND PHOSPHONATE GROUPS BEARING POLYISOCYANATE MIXTURES
Publication
Application
Priority
DE 2725208 A 19770603
Abstract (en)
[origin: US4177206A] The present invention is directed to polyisocyanate mixtures which are liquid at room temperature and which (a) contain from 10 to 42% by weight of aromatically-bound isocyanate groups, which may be partly in the form of carbamic acid chloride; (b) contain from 0.5 to 5% by weight of sulphur in the form of sulphonic acid groups which may be at least partly neutralized or esterified; (c) contain from 0.5 to 5% by weight of phosphorus in the form of phosphonic acid alkyl ester groups or phosphonic acid aralkyl ester groups and (d) have a viscosity of from 10 to 50,000 cP at 25 DEG C.
IPC 1-7
IPC 8 full level
C07F 9/40 (2006.01); C08G 18/77 (2006.01)
CPC (source: EP US)
C07F 9/4065 (2013.01 - EP US); C08G 18/776 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
EP 0000021 A1 19781220; EP 0000021 B1 19800723; DE 2725208 A1 19781214; DE 2860035 D1 19801113; IT 1104722 B 19851028; IT 7849668 A0 19780602; US 4177206 A 19791204
DOCDB simple family (application)
EP 78100033 A 19780601; DE 2725208 A 19770603; DE 2860035 T 19780601; IT 4966878 A 19780602; US 90751578 A 19780519