Foam manufacture using two catalysts and a vaporizable auxiliary

Details Foam manufacture using two catalysts and a vaporizable auxiliary Foam manufacture using two catalysts and a vaporizable auxiliary

1979-05-18

1981-01-20

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 99, 521124, 521127, 521128, 521129, 521131, 521917, C08G 1814

Patent

active

042463564

ABSTRACT:
A foam material, such as a polyurethane foam, is formed by mixing a polymer forming material with a blowing agent and two catalysts, one catalyst being provided to catalyze polymer formation and the other catalyst being provided to catalyze blowing. An auxiliary blowing agent in the form of a vaporizable substance, such as methylene chloride, is also incorporated. In one embodiment, the mixed components are maintained in a reaction vessel prior to application of same to a surface on which the foam is allowed to expand. In a further embodiment, in the case where the foam is polyurethane foam and the vaporizable substance is methylene chloride, the mixed components are maintained in a reaction vessel prior to application of same to a surface on which the foam is allowed to expand and the methylene chloride is used in an amount in excess of 12% of the weight of the polyurethane-forming material.

REFERENCES:
patent: 3123856 (1964-03-01), Dye et al.
patent: 3278659 (1966-10-01), Willy
patent: 3281379 (1966-10-01), Fontaine et al.
Saunders et al., Polyurethanes, Part II, Interscience, NY, 1964, pp. 59-65 & 77.

Affiliated with

Also associated with

Rating

Foam manufacture using two catalysts and a vaporizable auxiliary does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Foam manufacture using two catalysts and a vaporizable auxiliary, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foam manufacture using two catalysts and a vaporizable auxiliary will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1767498