Polyolefins and method for the production thereof
AssigneeSolvay (Societe Anonyme)
InventorFernand Gauthy
Life of this patent
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Abstract
Process for producing polyolefins, comprising the following steps: a) grafting of acid groups onto polyolefins by means of a graftable monomer bearing at least one functional group chosen from a carbonyl and an acid anhydride, optionally in the presence of another graftable monomer bearing a vinyl unsaturated group and, optionally, one or more aromatic rings; b) purification, consisting in removing at least some of the graftable monomer bearing at least one functional group chosen from a carbonyl and an acid anhydride that has not reacted with the polyolefins; c) neutralization of the acid groups by at least one neutralizing agent. Polyolefin obtained.
Claims22
A process for producing a polyolefin, comprising the following steps:
- a) grafting acid groups onto a polyolefin by means of a graftable monomer bearing at least one functional group chosen from the group consisting of a carbonyl and an acid anhydride, optionally in the presence of another graftable monomer bearing a vinyl unsaturated group and, optionally one or more aromatic rings;
- b) purifying the product of step a) by removing at least a portion of the graftable monomer bearing at least one functional group chosen from the group consisting of a carbonyl and an acid anhydride that has not grafted with the polyolefin to produce a purified product;
- c) neutralizing the acid groups of the purified product by reacting with zinc acetate, the grafting step a) and the step c) being carried out in an extruder.
Dependencies are inferred from the claim text.