Silicone surfactants for rigid polyurethane foam made with third

Details Silicone surfactants for rigid polyurethane foam made with third Silicone surfactants for rigid polyurethane foam made with third

1997-11-25

1999-03-16

Lovering, Richard D.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

516 8, 521131, C08J 914

Patent

active

058831428

ABSTRACT:
A method for making a rigid polyurethane foam by reacting a polyisocyanate and a polyol in the presence of a urethane catalyst, a blowing agent and a silicone surfactant characterized by employing as a blowing agent a C1-C4 HFC or HCFC, preferably HFC-245fa, and as the silicone surfactant a polyether-polysiloxane coploymer having a total surfactant molecular weight of 12,000 to 100,000 g/mole, a wt % siloxane in the surfactant of 10 to 40 wt %, a molecular weight of the polyether portion of 1200 to 6,000 g/mole, and a wt % of ethylene oxide in the polyether portion of 30-100 wt %.

REFERENCES:
patent: 4304872 (1981-12-01), Tenhagen
patent: 4751251 (1988-06-01), Thornsberry
patent: 4997706 (1991-03-01), Smits et al.
patent: 5308881 (1994-05-01), Londrigan et al.
patent: 5426127 (1995-06-01), Doerge
patent: 5432206 (1995-07-01), Stanga et al.
patent: 5461084 (1995-10-01), Doerge
patent: 5525640 (1996-06-01), Gerkin et al.
patent: 5686499 (1997-11-01), Fishback
Barthelemy, P. P., and Leroy, A., "Latest Results in the Development of Next Generation HFC Blowing Agents" Polyurethane 1995, Sep. 26-29, 1995, pp. 26-33.
Bogdan, M. C., Williams, D. J., et al. "Status Report on the Development of HFC-245fa as a Blowing Agent" Polyurethane EXPO 1996 pp. 394-403.
Bodnar, T. W., Koch, J. J.; and Thornsberry, J. D., "New Surfactant Technology for HCFC-123 and HCFC-141b Blown Rigid Foam Systems", Polyurethane World Congress 1991, pp. 24-26.

Affiliated with

Also associated with

Rating

Silicone surfactants for rigid polyurethane foam made with third does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-818204