Prepolymers with low monomeric TDI content

Details Prepolymers with low monomeric TDI content Prepolymers with low monomeric TDI content

1997-11-03

1999-07-20

Cooney, Jr., John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

521159, 528 59, 528 76, 560 25, 560330, 560360, C07C26102

Patent

active

059257814

ABSTRACT:
This invention relates to novel liquid, homogeneous toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymers having an NCO content of from about 2 to 16%, a viscosity or about 10,000 mPa.s or less at room temperature, and which contains about 1.0% or less of free monomeric TDI. This invention also relates to a process for the preparation of these liquid, homogeneous toluene diisocyanate/polyether/-polymethylene poly(phenylisocyanate) prepolymers.

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