Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1979-10-11
1981-03-24
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 53, 521137, 521156, 260DIG40, C08G 1814, C08G 1838, C08G 1882
Patent
active
042581370
ABSTRACT:
This invention relates to the preparation of a flexible, open cell polyurethane foam which can be rigidized by incorporating an epoxy resin into the mixture prior to foaming and, after forming a flexible foam, adding an epoxy curing agent thereto to cause the epoxy resin to cure thereby rigidizing the previously flexible foam. The flexible foam can be reshaped prior to rigidizing if desired.
REFERENCES:
patent: 2444333 (1948-06-01), Castan
patent: 3145438 (1964-08-01), Kottke et al.
patent: 3242108 (1966-03-01), McGary et al.
patent: 3620987 (1971-11-01), McLaughlin et al.
patent: 3673128 (1972-06-01), Hayash et al.
patent: 3676380 (1972-07-01), McLaughlin et al.
patent: 3781229 (1973-12-01), Smith et al.
patent: 4137200 (1979-01-01), Wood et al.
Frisch, Rubber Chemistry & Technology, Sep. 1972, vol. 45, No. 5, pp. 1442, 1460, 1461.
Cockeram H. S.
McDowell, Jr. William W.
Plunkett Richard P.
W. R. Grace & Co.
LandOfFree
Rigidized open cell 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 Rigidized open cell polyurethane foam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rigidized open cell polyurethane foam will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2408688