The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 1978
Filed:
Jun. 04, 1975
Applicant:
Inventors:
Gotz Koerner, Essen, DT;
Gerd Rossmy, Haltern-Lavesum, DT;
Assignee:
Th. Goldschmidt AG, Essen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08G / ;
U.S. Cl.
CPC ...
260 / ;
Abstract
A process for the preparation of polyetherurethane foams is disclosed, wherein polyether alcohol and polyisocyanate are foamed in the presence of water or low-boiling propellant and polyalkyleneglycol-polysiloxane mixed block polymer foam stabilizer. In accordance with the invention, the mixed block polymer foam stabilizer has the general formula ##STR1## wherein M IS UNIFORM OR APPROXIMATELY UNIFORM WITHIN EACH SILOXANE BLOCK OF EACH MOLECULE AND STANDS FOR 5 OR 6;