Open-celled rigid polyurethane foam

Details Open-celled rigid polyurethane foam Open-celled rigid polyurethane foam

1998-02-20

1999-01-05

Foelak, Morton

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

521112, 521132, C08G 1810

Patent

active

058566783

ABSTRACT:
Disclosed is a process for preparing an open-celled rigid polyurethane foam by reacting a polyisocyanate with a polyol in the presence of a blowing agent, usually water, and a cell opening agent. The cell opening agent comprises a combination of a polyoxyalkylene polysiloxane having a cloud point of 65.degree. C. or less, and a second substance that has a critical surface free energy of less than about 23 mJ/m.sup.2. Highly preferred as second substance is fine particulate poly(tetrafluoroethylene) polymer.

REFERENCES:
patent: 2846408 (1958-08-01), Brochhagen et al.
patent: 3215652 (1965-11-01), Kaplan
patent: 3297597 (1967-01-01), Edwards et al.
patent: 3694385 (1972-09-01), Salyer et al.
patent: 4137265 (1979-01-01), Edwards et al.
patent: 4383102 (1983-05-01), McDaniel et al.
patent: 4394491 (1983-07-01), Hoffman
patent: 4500656 (1985-02-01), Rasshofer et al.
patent: 4704410 (1987-11-01), Booth et al.
patent: 4704411 (1987-11-01), Gansow et al.
patent: 4735970 (1988-04-01), Sommerfeld et al.
patent: 5248704 (1993-09-01), Rossio et al.
patent: 5284882 (1994-02-01), Rossio et al.
patent: 5318997 (1994-06-01), Okada et al.
patent: 5350777 (1994-09-01), Yuge et al.
patent: 5721284 (1998-02-01), Smits et al.

Affiliated with

Also associated with

Rating

Open-celled rigid polyurethane foam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Open-celled rigid polyurethane foam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Open-celled rigid polyurethane foam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-865075