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:
Aug. 06, 2002
Filed:
Jun. 24, 1999
Applicant:
Inventors:
Richard L. Buxton, Boise, ID (US);
Erik M. Parker, Boise, ID (US);
Assignee:
Weyerhaeuser Company, Federal Way, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K 3/14 ; C08K 3/18 ; C08K 3/28 ; C08K 3/30 ;
U.S. Cl.
CPC ...
C08K 3/14 ; C08K 3/18 ; C08K 3/28 ; C08K 3/30 ;
Abstract
A mixture, casting system and method for forming a polyurethane product. The mixture typically includes a slurry including an alcohol containing at least two hydroxyl groups, and calcium carbonate. Typically, the calcium carbonate is present in the slurry in a range of between about 40% and 70% by weight. The mixture also includes an isocyanate mixed into the slurry such that isocyanate forms between about 10% and 50% by weight of the resulting mixture, the remainder of the resulting mixture being slurry. The mixture also may include a chain extender, cross-linking agent, or polymerization catalyst.