TH32870EX - Flexible polyurethane foam and the process for making such polyurethane substitutes. - Google Patents

Abstract

Soft polyurethane foam Flexible and compressible prepared by the reaction of pre-polymer composite. The reaction product of polyol type I from 25 to 75 percent by weight. This type of polyol is a polyether poly. Lyol with equivalent weight greater than 1000 and having noninel, nalithy, 1.6 to 3 and diphenylmethane diisocyanate or Their derivatives from 25 to 75 percent, in which they exceed the relative content of diphenyl methane diisocyanate or Its derivatives And the second type of polyol How to make this kind of foam Ideally, the foam has about 30 percent less sorghum and about 10 percent less permanent compaction at room temperature at 50 percent of compression. Has in being an issue (Both cast and foam in place). Inertial objects, suspension, side material Get some carpets and floating devices

Claims (1)

1. A flexible polyurethane foam made by the interaction of (1) a tri-polymer made up of a polymer reaction product. Type I Leol, from 25 to 75 percent by weight. Such polyols are polyether polyols of more than 1000 equivalent weight and nominal function polyols since 1.6 to 3 and diphenylmethane diisocyanates or their nucleotides ranging from 25 to 75 percent as having diphenylmethane diisocyanate Or its derivatives that are excessive, relative quantities, and (2) responsive polyols with equivalent quantities greater than 1500