Patent · US Active

PUR foam with enlarged cell structure

US9688830B2 · kind B2 · utility

1Cited by

19References

19Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Eva Emmrich-Smolczyk · Essen, DE
Harald Modro · Gladbeck, DE
Ralf Althoff · Haltern, DE
Rainer Ziegler · Waiblingen, DE

Key dates

Filing date	Apr 10, 2014
Grant date	Jun 27, 2017
Priority date	—
Expiry date	Apr 10, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2375/08
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Described are (a) a process for production of polyurethane foam by reacting one or more polyol components with one or more isocyanate components, wherein wax having a congealing point in the range from 40° C. to 90° C. is employed as an additive, (b) a polyurethane foam obtainable by said process, (c) the use of waxes having a congealing point in the range from 40° C. to 90° C. as an additive in the manufacture of polyurethane foams to coarsen the foam structure, and also (d) a polyurethane foam production composition containing a wax having a congealing point in the range from 40° C. to 90° C.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.