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:
Dec. 26, 2000
Filed:
Feb. 04, 1999
Hung Dang Ngoc, Limeil Brevannes, FR;
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
There is a need for odorless rubbery polymers that offer high heat resistance, ultraviolet light resistance and low fogging characteristics. For instance, rubbery polymers of this type are needed by the automotive and construction industries. The deodorized rubbery polymers of this invention are of particular value because they can be blended with polyvinyl chloride to make leathery compositions having good heat and ultraviolet light resistance. The present invention more specifically discloses a process for preparing a deodorized rubbery polymer which comprises the steps of (1) polymerizing in a first stage (a) butyl acrylate, (b) at least one member selected from the group consisting of methyl methacrylate, ethyl methacrylate, methyl acrylate and ethyl acrylate, (c) acrylonitrile and (d) a crosslinking agent under emulsion polymerization conditions to produce a seed polymer containing latex, wherein said polymerization is initiated with a redox initiator system, wherein the redox initiator system is comprised of a free radical generator and a reducing agent; (2) adding (a) styrene, (b) additional acrylonitrile, (c) additional crosslinking agent and (d) additional free radical generator to the seed polymer containing latex under emulsion polymerization conditions which result in the formation of an emulsion containing the rubbery polymer; and (3) recovering the rubbery polymer from the emulsion containing the rubbery polymer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile