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Title:
POLYPHOSPHORIC ACID AS STABILIZER FOR POLYURETHANE PREPOLYMER
Document Type and Number:
Japanese Patent JPH10212273
Kind Code:
A
Abstract:

To obtain a compositions stabilized to water content and heat induction reaction by adding a stabilized effective amount of polyphosphroric acid(PPA) to the composition containing an isocyanate (NCO)-functional substance, especially a polyurethane prepolymer.

A stabilized effective amount of PPA (e.g. in an amount of 0.1-10wt.% preferably 2-6wt.% based on the weight of NCO functional substance) is added to or mixed into an NCO functional compound (e.g. an organic monoisocyanate such as phenyl isocyanate or benzyl isocyanate, an organic diisocyanate such as phenylene diisocyanate or toluene diisocyanate and a polyisocyanate, an organic polyisocyanate and an isocyanate-ended prepolymer produced therefrom) to provide the objective composition stabilized to water content and heat induction reaction.


Inventors:
BASSNER SHERRY LYNN
BURDENSKI ROBERT EUGENE
SANTOSUSSO THOMAS MICHAEL
Application Number:
JP1631098A
Publication Date:
August 11, 1998
Filing Date:
January 29, 1998
Export Citation:
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Assignee:
AIR PROD & CHEM
International Classes:
C07C265/14; C07C269/08; C07C271/06; C08G18/08; C07C263/18; C08G18/12; C08K3/32; (IPC1-7): C07C265/14; C07C263/18; C07C269/08; C07C271/06
Attorney, Agent or Firm:
Chika Takagi (2 outside)