C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/137
C08G 18/38 (2006.01) C08G 18/10 (2006.01) C08G 18/65 (2006.01)
Patent
CA 1082398
POLYURETHANES PRODUCED FROM DIAMINODIPHENYL-DITHIOETHERS Abstract of the Disclosure This invention relates to polyurethane elastomers produced using optionally substituted diaminodiphenyl-dithio- ethers as chain extenders. More particularly, this invention relates to certain polyurethane elastomers and a process for making such elastomers. The process broadly comprises reacting polyisocyanates with active hydrogen containing compounds with certain novel chain extenders of the general formula: Image wherein R' and R", which may be the same or different, each represent hydrogen, an alkyl radical having from 1 to 6 carbon atoms, an aryl radical having from 6 to 15 carbon atoms, a cycloalkyl radical having from 4 to 12 carbon atoms, halogen, -NO2, -CN, OR''' or the radical Image wherein R''' represents an optionally branched alkyl radical having from 1 to 6 carbon atoms; and R represents a straight- or branched-chain aliphatic radical having from 1 to 25 carbon atoms which are interrupted by from 1 to 12 atoms of nitrogen and/or oxygen and/or sulphur in the form of secondary or tertiary amino groups, urea or acid amide groups, ether, urethane or ester groups, thioether, thio- urethane or thioester groups or from 1 to 4 carbonyl groups.
245572
Grogler Gerhard
Recker Klaus
Schwindt Jurgen
Aktiengesellschaft Bayer
Sherman
LandOfFree
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