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:
Jun. 11, 1996
Filed:
Sep. 13, 1995
Applicant:
Inventors:
Richard M Gerkin, Kanawha, WV (US);
Mark E Harakal, Kanawha, WV (US);
Lee F Lawler, Kanawha, WV (US);
Glenn A Miller, Kanawha, WV (US);
Assignee:
OSi Specialties, Inc., Danbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521112 ; 521155 ; 528 25 ; 528 27 ; 528 29 ;
Abstract
It has now been found that the use of inert gases as an auxiliary blowing agent in flexible polyurethane foams places unexpected requirements on the composition of the silicone surfactants used in such foams. Typical silicone polyalkylene oxide polyether copolymer comb-type surfactants containing greater than about 37% ethylene oxide in the pendant polyether chains cause large cells when added inert gas is used as the blowing agent.