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:
Aug. 23, 1983
Filed:
Dec. 02, 1981
Christopher G Demmer, Cherry Hinton, GB;
Roger Francombe, Sawston, GB;
Edward W Garnish, Saffron Walden, GB;
Derek J Massy, Linton, GB;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
Aqueous dispersions of a phenolic resole and a thermoplastics polymeric material or a rubber, suitable for use as adhesives, are prepared by (a) dissolving a solid thermoplastics polymeric material, such as a polyvinyl acetal or a nylon polyamide, or rubber in a phenol, (b) adding a nonionic or anionic surface active agent and/or protective colloid, (c) adjusting the mixture to a pH above 7 by addition of a base, (d) adding aqueous formaldehyde solution, or a formaldehyde donor, to a molar ratio of phenol to formaldehyde within the range 1:1 to 1:3, (e) if necessary, adding water, and (f) heating the mixture to form a phenolic resole.