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. 14, 1978
Filed:
Jan. 06, 1976
Carl H Wollen, Comstock Park, MI (US);
Leon Chemical & Plastics, Division of U.S. Industries, Inc., Grand Rapids, MI (US);
Abstract
The specification discloses noncracking permanent adhesives which utilize mixtures of phenolic resins and methacrylate resins having a Mw greater than about 100,000 and preferably about 400,000 bonding plasticized vinyl resin coverings, e.g., PVC, to hard polymeric substrate surfaces such as ABS, etc. Also, it is preferable that the vinyl resin covering contain plasticizers which are no more than limited in compatibility with the adhesive. It is theorized that the adhesive mixture prevents migration of plasticizer from the plasticizer-containing vinyl resin covering into the adhesive and eventually into the polymeric substrate.