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:
Mar. 21, 1978
Filed:
Dec. 20, 1976
Ato Chimie, Courbevoie, FR;
Abstract
A process for chemical modification of polyolefins, particularly fibrillar, powder, granular or film polyolefins, in which one or more polar monomers are grafted to the polyolefins in an aqueous dispersion, by means of a free-radical generator. Grafting is done in the presence of a wetting agent and a particular additive derived from alkanes and possessing at least 1 thiol function; the dispersion contains 0.1 to 50 parts weight of monomer, 0.1 to 3 parts weight of wetting agent, and 0.1 to 3 parts weight of additive, for 100 parts weight of polyolefin. Polyolefins that have undergone this process have an improved wettability and, in applications requiring treatment in an aqueous suspension, such as the production of partly synthetic paper, this facilitates their dispersion in water.