Phenol formaldehyde foams

Details Phenol formaldehyde foams Phenol formaldehyde foams

1979-12-05

1983-11-22

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 85, 521109, 521128, 521130, 521136, C08G 800, C08G 1404, C08J 904, C08G 6538

Patent

active

044170041

ABSTRACT:
A two-part pack, and method for its preparation, from which a phenol-formaldehyde resin foam may be prepared, which system comprises in the first part of the pack a phenol-formaldehyde resin, a blowing agent which is an inert, low boiling liquid, an effective amount of a nitrogenous modifier capable of permitting dispersion of the blowing agent in the resin, and a surfactant; and in the second part of the pack an acid catalyst system dispersed in a liquid polyhydroxy compound, in a weight ratio of polyhydroxy compound to acid catalyst of at least 1:1. These two-part packs enable simpler handling and placement techniques being shelf storable, compared to the known shelf storable systems which involve three, or more, components.

REFERENCES:
patent: 2629698 (1953-02-01), Sterling
patent: 2653139 (1953-09-01), Sterling
patent: 3298973 (1967-01-01), Quarles et al.
patent: 3389094 (1968-06-01), D'Alessandro
patent: 3484391 (1969-12-01), Wheatley et al.
patent: 3740358 (1973-06-01), Christie et al.
patent: 3870661 (1975-03-01), Crook et al.
patent: 3907723 (1975-09-01), Pretot
patent: 3915905 (1975-10-01), Klanton
patent: 3953645 (1976-04-01), Moss
patent: 4005036 (1977-01-01), Stalego
patent: 4107107 (1978-08-01), Mendelsohn et al.
patent: 4111911 (1978-09-01), Weissenfels et al.
patent: 4122045 (1978-10-01), Garrett et al.
patent: 4176106 (1979-11-01), Reid et al.
patent: 4176216 (1979-11-01), Reid et al.
patent: 4202945 (1980-05-01), Leinh ardt
patent: 4207400 (1980-06-01), Dahms
patent: 4219623 (1980-08-01), Sudan et al.

Affiliated with

Also associated with

Rating

Phenol formaldehyde 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 Phenol formaldehyde foams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phenol formaldehyde foams will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1815499