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. 19, 1977
Filed:
Mar. 29, 1976
David Stanley Cobbledick, Kent, OH (US);
The General Tire & Rubber Company, Akron, OH (US);
Abstract
The discoloration occurring during commercial production of large buns or slabs of low density, flexible and semiflexible polyetherurethane foams containing chlorine-containing polymers such as polyvinyl chloride, zinc oxide and antimony oxide, in which optionally part of the chlorine-containing polymer can be replaced with a chlorinated paraffin provided a proportionate reduction is made in the amount of the zinc oxide employed, is reduced or prevented by using a small amount of a zinc salt selected from the group consisting of ##STR1## --halogen, --hydrogen, or a --nitro group, R' being a C.sub.1 to C.sub.10 alkyl, cycloalkyl, aralkyl, alkaryl or aryl group, preferably said zinc salt has the formula: ##STR2##