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:
Jan. 29, 1985
Filed:
Nov. 15, 1983
Applicant:
Inventors:
Gerson M Vas, Welling, GB;
Leslie E Shiel, Gravesend, GB;
Assignee:
Blue Circle Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; B32B / ;
U.S. Cl.
CPC ...
523205 ; 428402 ; 428403 ; 428404 ; 428407 ; 523209 ;
Abstract
Filler particles are coated with an adduct of an unsaturated polymer, e.g. polybutadiene, and phosphinic acid groups. The coated filler may be prepared by reacting an unsaturated organic polymer with a phosphorus trihalide and applying the product in the form of a solution or dispersion in an organic solvent to mineral, e.g. calcium carbonate, particles. If liquid, the product may alternatively be applied as such to the mineral particles. In either case, the product so applied is then hydrolyzed in situ in order to form the phosphinic acid groups. The coated filler particles are useful in the reinforcement of elastomers.