Drying agents for non-foamed polyurethanes

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

524450, 524589, 528 44, 528 48, 528 57, C08J 300, C08K 320, C08K 334, C08L 7500

Patent

active

06051647&

ABSTRACT:
Mild acid treatment of potassium 3A zeolite molecular sieve to modify the pH of the surface of the molecular sieve to a pH ranging between 9.6 and 11 was found to significantly minimize the effect of the potassium 3A zeolite on the pot life when used as a drying agent for non-foamed polyurethanes. Increases in pot life in non-foamed polyurethane preparations over similar preparations with untreated potassium 3A zeolite molecular sieve were dramatic (about 400%) with less than 5% reduction in water adsorption capacity.

REFERENCES:
patent: 2882243 (1959-04-01), Milton
patent: 3326844 (1967-06-01), Gruber
patent: 3506593 (1970-04-01), Allenbach
patent: 3695837 (1972-10-01), Sunderland et al.
patent: 4134965 (1979-01-01), Rein et al.
patent: 4222995 (1980-09-01), Roebke et al.
patent: 4251427 (1981-02-01), Recker et al.
patent: 4654316 (1987-03-01), Barri et al.
patent: 4857584 (1989-08-01), Vandermeersch et al.
patent: 4987109 (1991-01-01), Kao et al.
patent: 5130404 (1992-07-01), Freeland
patent: 5401785 (1995-03-01), Kumagai et al.
Patterson, Austin M., A German-English Dictionary for Chemists, Third Edition, John Wiley & Sons, Inc., pp. 478-401.
International Standard, ISO 787/9, First Edition, General Methods of Test for Pigments and Extenders--Part 9: Determination of pH of an Aqueous Suspension, Global Engineering Documents, Sep. 15, 1981, pp. 1-2.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Drying agents for non-foamed polyurethanes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drying agents for non-foamed polyurethanes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drying agents for non-foamed polyurethanes will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2336920

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.