Patent · US Active

Silicone-polyether block copolymers having a defined polydispersity in the polyoxyalkylene part and their use as stabilizers for producing polyurethane foams

US8334355B2 · kind B2 · utility

59Cited by

19References

13Claims

0Family size

Assignee

EVONIK GOLDSCHMIDT GMBH · DE

Inventors

Frauke Henning · Essen, DE
Wilfried Knott · Essen, DE
Frank Schubert · Neukirchen-Vluyn, DE
Roland Hubel · Essen, DE
Christian Eilbracht · Herne, DE

Key dates

Filing date	Oct 26, 2009
Grant date	Dec 18, 2012
Priority date	—
Expiry date	Oct 26, 2029

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/24
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Silicone-polyether block copolymers prepared by organomodification of branched polysiloxanes having terminal and/or lateral SiH functions or linear polysiloxanes having lateral and/or terminal SiH functions by means of polyethers or polyether mixtures, characterized in that the polyethers used have a polydispersity Mw/Mn in the range from 1.0 to 1.5 and/or ratios Mn/MWIN and Mw/MWIN in the range from 0.7 to 1.3, their preparation and use and also polymer articles produced therewith.

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