Patent ID: 6262310
Filing Date: 2001-07-17
Classification: C08F,C10L

Abstract:
A process for preparing a halogen-free hydroxypolyalkene amine composition comprising:first reacting a polyalkene with hydrogen peroxide in the presence of acetic acid and a mixed mineral acid catalyst consisting essentially of phosphoric acid and sulfuric acid;reacting the resulting epoxidized polyalkene at a temperature of from about 230.degree. to about 300.degree. C. in a closed vessel at a pressure of up to about 2.1 MPa, 300 psi, with an amine compound in an excess of said amine compound of from about 2 to 20 moles per mole of said epoxidized polyalkene;wherein said polyalkene is selected from the group consisting of polybutene having a number average molecular weight of from about 400 to about 2200 and polypropylene having a number average molecular weight of from about 170 to about 2200;wherein said epoxidized polyalkene is selected from the group consisting of epoxidized polybutene and epoxidized polypropylene;wherein said amine compound is selected from the group consisting of diamines and polyamines and mixtures thereof, said amines providing at least one primary or secondary amino group;wherein the mole ratio of acetic acid added to hydrogen peroxide is up to 0.3:1;the mole ratio of hydrogen peroxide added to said polyalkene is at least 1.8:1;the mole ratio of said acetic acid to polyalkene is up to about 0.4:1;the mole ratio of phosphoric acid to sulfuric acid in said mixed mineral acid catalyst ranges between 2:1 to 3:1; andwherein the mole ratio of said mixed mineral acid catalyst to said polyalkene ranges between 0.0025:1 and 0.03:1.