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:
Jan. 26, 1982
Filed:
Feb. 17, 1981
Kenneth Treadwell, Rahway, NJ (US);
Emily C Bossert, Westfield, NJ (US);
M&T Chemicals Inc., Woodbridge, NJ (US);
Abstract
Polyurethane foams exhibiting excellent thermal and oxidative stability can be prepared using as the polymerization or gel catalyst a composition containing at least one organotin compound containing phosphorus and at least one organotin compound wherein a halogen atom is bonded to tin or phosphorus. The terminal properties of foams obtained using the present catalyst compositions are superior to those exhibited by foams prepared using gel catalyst compositions wherein tin, phosphorus and a halogen are present but the phosphorus and halogen are not in the same molecule as the tin atom. The halogen containing tin compound and the phosphorus-containing tin compound may be identical or different. The recovery properties of the foam can be improved by the presence of a carboxylic acid in the catalyst composition.