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1. (WO2015047683) PLASTICIZER FREE CURING COMPOSITION

Pub. No.:    WO/2015/047683    International Application No.:    PCT/US2014/054036
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Fri Sep 05 01:59:59 CEST 2014
IPC: C08G 18/76
C08G 18/10
C08G 18/32
C08G 18/42
C08L 75/04
Applicants: CHEMTURA CORPORATION
Inventors: DOYLE, Thomas, R.
DING, Yujie
JACKSON, Kevin
ROSENBERG, Ronald, O.
Title: PLASTICIZER FREE CURING COMPOSITION
Abstract:
Plasticizer free curing compositions comprising small particle size complexes of methylenedianiline and an alkali salt, e.g. a 3:1 coordination complex of MDA /alkali salt, with average diameter 60 micron or less, often 20 micron or less, e.g., 10 microns or less, dispersed in a volatile, non-polar, organic solvent are prepared. Stable one pack urethane compositions comprising the plasticizer free curing compositions and polyurethane prepolymers are prepared, which exhibit excellent storage stability and overcome many of the drawbacks encountered when using MDA complexes dispersed in plasticizers such as high boiling aromatic and alkyl di-esters.