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:
Feb. 01, 1983
Filed:
Sep. 14, 1981
Marion G Morningstar, Avon Lake, OH (US);
Thomas J Doyle, Lorain, OH (US);
The B.F. Goodrich Company, Akron, OH (US);
Abstract
The present invention relates to a process for producing low energy dispersion vinyl copolymers which, in a plastisol, can be fused at lower temperatures or in a shorter period of time than presently available dispersion vinyl copolymers. It has been found that if, instead of adding all the comonomer batchwise prior to the start of the reaction, the comonomer, such as methyl acrylate, for example, is metered into the reactor continuously, or intermittently, during all or part of the polymerization reaction period, a dispersion vinyl copolymer is produced that has a lower plastisol viscosity for a given comonomer content. Plastisols made from the vinyl copolymers of the present invention have good flow properties and the fused films made therefrom have high gloss, high clarity and good mechanical strength, even when fused at low temperatures.