Block Copolymers of Polyacrylates and Polyolefins
AssigneeExxonMobil Chemical Patents Inc.
InventorsWei Tang, Andy H. Tsou
Life of this patent
Estimating the term…
Abstract
A polyacrylate-polyolefin block copolymer and composition for volatile solvent-free coating comprising such compounds having the following structure: wherein “PO” is a polyolefin having a number average molecular weight of at least 300 g/mole, and “Ar” is selected from the group consisting of C6 to C20 aryls, a C7 to C32 alkylaryls, a C6 to C20 aryloxys, and halogen substituted C6 to C20 aryls and C7 to C32 alkylaryls, while the other variables are as described herein. The block copolymers can be produced in an alkylation reaction between the desired polyacrylate and a vinyl/vinylidene-terminated polyolefin.
Claims19
A polyacrylate-polyolefin block copolymer comprising compounds having the following structure:
- wherein:
- “PO” is a polyolefin having a number average molecular weight of at least 300 g/mole;
- n and m are each an integer independently within a range from 1 to 2000;
- x is an integer from 1 to 4;
- “Ar” is selected from the group consisting of C6 to C20 aryls, a C7 to C32 alkylaryls, a C6 to C20 aryloxys, and halogen substituted C6 to C20 aryls and C7 to C32 alkylaryls;
- R is independently selected from the group consisting of hydrogen, hydroxyl, a C1 to C10 alkyl, a C1 to C10 alkoxy, a C6 to C20 aryl, a C7 to C32 alkylaryl, a C6 to C20 aryloxy, halogen substituted C6 to C20 aryls, glycidyl, amine, and alkylamines;
- and
- each R′ is independently selected from hydrogen and C1 to C10 alkyls.
A method of forming a polyacrylate-polyolefin block copolymer comprising combining two or more acrylates selected from the group consisting of those having the following structures:
- wherein:
- R is selected from the group consisting of hydrogen, hydroxyl, a C1 to C10 alkyl, a C1 to C10 alkoxy, a C6 to C20 aryl, a C6 to C20 aryloxy, halogen substituted C6 to C20 aryls, glycidyl, amine, and alkylamines, with the proviso that at least one acrylate is such that R is a C6 to C30 aryl or C6 to C30 aryloxy, or C7 to C32 alkylaryl, and/or halogen substituted C6 to C20 aryls;
- R′ is independently selected from hydrogen and C1 to C10 alkyls, thus forming a polyacrylate;
- and
- combining the polyacrylate with a vinyl/vinylidene-terminated polyolefin having a number average molecular weight of at least 300 g/mole alkylation conditions to form the polyacrylate-polyolefin block copolymer.
Dependencies are inferred from the claim text.