Patent · US Active

Process for producing silica-comprising polyol dispersions and their use for producing polyurethane materials

US9403932B2 · kind B2 · utility

2Cited by

6References

19Claims

0Family size

Assignee

BASF SE

Inventors

Berend Eling · Ludwigshafen, DE
Zeljko Tomovic · Bohmte, DE
Stefan Auffarth · Westerkappeln, DE
Alexander Traut · Schriesheim, DE

Key dates

Filing date	Oct 8, 2009
Grant date	Aug 2, 2016
Priority date	—
Expiry date	Jul 25, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2006/82
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Provided is a process for producing silicate-comprising polyols, comprising (i) admixing an aqueous silica sol (K) having an average particle diameter 1-150 nm, silica content 1-60% by weight and a pH of 1-6, with a 0.1- to 20-fold amount of at least one organic solvent (L), (ii) admixing the resulting mixture with a polyol, (iii) removing at least partially water and the organic solvent (L) by distillation, (iv) admixing with 0.1-30 mol % of at least one compound (S) which has at least one at least monoalkoxylated silyl group and at least an alkyl, cycloalkyl or aryl substituent, which may contain heteroatoms, wherein the substituent optionally contains a group reactive toward an alcohol, an amine or an isocyanate, and (v) optionally adjusting the pH of the silicate-comprising polyol to 7-12 by addition of a basic compound.

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