Process for the production of molded parts and fillings made of

Details Process for the production of molded parts and fillings made of Process for the production of molded parts and fillings made of

1994-06-27

1995-10-03

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 53, 2643286, B29C 4402

Patent

active

054549949

ABSTRACT:
Molded parts and fillings of rigid and flexible polyurethane foams and rigid polyurethane foams with isocyanurate structures are made from a polyol and isocyanate in the presence of an activator, water, a blowing agent and optionally other additives. Imperfections in the foam are avoided by raising the amount of activator with time during the production of the reaction mixture in such a way that the friability time occurs simultaneously throughout the contents of the mold.

REFERENCES:
patent: 4314963 (1982-02-01), Boden et al.
patent: 4379100 (1983-04-01), Salisbury et al.
patent: 4435349 (1984-03-01), Dominquez et al.
patent: 4710521 (1987-12-01), Soukup et al.
patent: 4742128 (1988-05-01), Frisch et al.
patent: 4919878 (1990-04-01), Pilger et al.
patent: 5238973 (1993-08-01), Mayer et al.
patent: 5300560 (1994-04-01), Harasin et al.

Affiliated with

Also associated with

Rating

Process for the production of molded parts and fillings made of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the production of molded parts and fillings made of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of molded parts and fillings made of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1075856