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:
Jul. 06, 1982
Filed:
Mar. 24, 1980
David J Dougherty, Akron, OH (US);
Binnur Gunesin, Uniontown, OH (US);
John W Spiewak, Webster, NY (US);
The Firestone Tire & Rubber Company, Akron, OH (US);
Abstract
The invention disclosed herein provides a process for preparing a diene-containing synthetic rubber having improved green strength which includes the steps of charging a reaction vessel with water, an emulsifier, an initiator, an N-(alkoxymethyl)acrylamide monomer and a monomer containing a vinyl group, purging the vessel with an inert gas, charging a diene monomer and an activator to the vessel, polymerizing the monomers to form a copolymer; and, thereafter extracting the copolymer from the vessel and any unreacted monomers. A styrene-butadiene composition containing up to about 10 percent by weight of N-(isobutoxymethyl)acrylamide exhibits better stress-strain properties than a comparable styrene-butadiene rubber without the acrylamide compound.