Open celled low density foam and method of making such an open c

Details Open celled low density foam and method of making such an open c Open celled low density foam and method of making such an open c

1998-03-11

1999-05-04

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521183, 521184, 521189, C08J 902, C08G 1834

Patent

active

059004401

ABSTRACT:
A lightweight open celled foam, having a density no greater than 0.5 pounds per cubic foot (pcf), preferably between 0.1 and 0.4 pcf, and a ratio of imide to amide groups greater than 1 to 1 and no greater than 19 to 1, is the reaction product made from an organic polyisocyanate having at least two functional groups per molecule and a mixture of a difunctional acid and a difunctional anhydride in the presence of a tertiary amine catalyst and a surfactant, with the reactants generating carbon dioxide during the manufacturing process. The reaction is interrupted when the amount of carbon dioxide generated from the reactants is from about 1% to about 8% by weight of the total mass of the reactants. The reaction mass is transferred after the interruption step to a second stage to complete the generation of carbon dioxide and the formation of the low density foam product.

REFERENCES:
patent: 4604409 (1986-08-01), Gagliani et al.
patent: 5093457 (1992-03-01), Zecher et al.

Affiliated with

Also associated with

Rating

Open celled low density foam and method of making such an open c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Open celled low density foam and method of making such an open c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Open celled low density foam and method of making such an open c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1869732