Permanent gas blown microcellular polyurethane elastomers

Details Permanent gas blown microcellular polyurethane elastomers Permanent gas blown microcellular polyurethane elastomers

1998-07-09

2000-02-08

Gorr, Rachel

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521159, 521174, 521176, C08G 1810

Patent

active

060229039

ABSTRACT:
Microcellular polyurethane elastomers having sharply reduced or virtually no urea linkages may be prepared without resort to organic physical blowing agents by frothing a frothable mixture containing isocyanate reactive polyols and chain extenders, and a frothable isocyanate component. The isocyanate component is derived by reacting a stoichiometric excess of a di- or polyisocyanate with a polyol component containing an ultra-low unsaturation polyol. The froth-produced elastomers surprisingly exhibit greatly improved tear strengths, compression set, and other physical properties as compared to all water-blown microcellular elastomers of the same density.

REFERENCES:
patent: 5158922 (1992-10-01), Hinney et al.
patent: 5470813 (1995-11-01), Le-Khac
patent: 5482908 (1996-01-01), Le-Khac
patent: 5545601 (1996-08-01), Le-Khac
patent: 5689012 (1997-11-01), Pazos et al.
ASTM D-2849-69, Standard Methods of Testing of Urethane Foam Polyol Raw Materials, pp. 913-931.

Affiliated with

Also associated with

Rating

Permanent gas blown microcellular polyurethane elastomers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Permanent gas blown microcellular polyurethane elastomers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permanent gas blown microcellular polyurethane elastomers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1681788