Rigid hydrophilic polyurethane foams

Details Rigid hydrophilic polyurethane foams Rigid hydrophilic polyurethane foams

1992-08-06

1995-06-13

Michl, Paul R.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521155, 521163, 521170, 528 40, 528 49, 528 52, 528 53, 528 54, C08G 1800

Patent

active

054243386

ABSTRACT:
The invention relates to rigid, open-celled hydrophilic polyurethane foams obtained by reacting in the presence of water as a blowing agent and a polyisocyanate with a polyhydric polyamine initiated polyether polyol. The polyether polyol is initiated with a polyhydric polyamine having three (3) to five (5) active amine hydrogens and has internal blocks of polyoxyethylene groups. The foam retains from 15 to 35 times its weight in water.

REFERENCES:
patent: 3036118 (1962-05-01), Jackson et al.
patent: 3036130 (1962-05-01), Jackson et al.
patent: 3112281 (1963-11-01), Gromacki et al.
patent: 3970618 (1976-07-01), Jabs et al.
patent: 4310632 (1982-01-01), Horacek et al.
patent: 5162385 (1992-11-01), Hartwig et al.
patent: 5167884 (1992-12-01), Rossio et al.
Olin Corporation; Olin Urethane Chemicals Product Data, "Terms and Formulas Used in Urethane Polymer Preparations", 1988, our pp. 1-6.

Affiliated with

Also associated with

Rating

Rigid hydrophilic polyurethane foams does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rigid hydrophilic polyurethane foams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rigid hydrophilic polyurethane foams will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1309687