Drying agents for non-foamed polyurethanes

Details Drying agents for non-foamed polyurethanes Drying agents for non-foamed polyurethanes

1997-04-09

1999-05-04

Bell, Mark L.

Chemistry of inorganic compounds

Zeolite

423714, 423715, 423DIG24, C01B 3914

Patent

active

059002263

ABSTRACT:
Mild acid treatment of zeolite 3A molecular sieve to modify the pH of the surface of the molecular sieve to a pH ranging between 9.5 and 11 was found to significantly minimize the effect of the zeolite 3A on the pot life of non-foamed polyurethanes. Increases in pot life over untreated zeolite 3A molecular sieve were dramatic (about 400%) with less than 5% reduction in water adsorption capacity.

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