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:
Apr. 22, 2003
Filed:
Oct. 12, 2001
Applicant:
Inventors:
Ronald Van Den Bosch, St Jansteen, NL;
Hans A. G. De Vos, Terneuzen, NL;
Assignee:
Dow Global Technologies Inc., Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 1/808 ;
U.S. Cl.
CPC ...
C08G 1/808 ;
Abstract
A method for producing an open cell low-density semi-rigid polyurethane foam suitable for general use as a thermal insulating material and/or an acoustical applications is disclosed. The method comprises a method for producing a flame-retardant open-celled semi-rigid polyurethane foam having an overall density of 5 to 30 kg/m by reacting (a) a polyisocyanate and (b) a polyol having a molecular weight of 100 to 10,000, in the presence of (c) an effective amount of an exfoliating graphite, (d) blowing agent and (e) optional additional auxiliary substances to produce.