Diblock copolymers prepared by cross metathesis

Patent metadata

Field	Value
Publication number	US-8940839-B2
Application number	US-201113072383-A
Country	US
Kind code	B2
Filing date	Mar 25, 2011
Priority date	Mar 25, 2011
Publication date	Jan 27, 2015
Grant date	Jan 27, 2015

Abstract

This invention relates to a composition comprising a multiblock polyolefin represented by the formula: PO—C(R 11 )(R 12 )—C(R 13 )═C(R 14 )—C(R 15 )(R 16 )—PO*, or isomers thereof, wherein R 11 , R 12 , R 13 , R 14 , R 15 , and R 16 , are each independently a substituted or unsubstituted C 1 through C 4 hydrocarbyl group or a hydrogen; PO and PO* are polyolefins; PO and PO* are each independently a substituted or unsubstituted hydrocarbyl group having 9 to 4000 carbon atoms, provided that at least one of PO and PO* are C 20 or greater, said polyolefin having: 1) an internal unsaturation as shown by the 13 C NMR peak at between about 128 and about 132 ppm; 2) an Mn ratio “Z”=0.1 to 10 where Z is the Mn (as determined by 13 C NMR) divided by Mn (as determined according to Gel Permeation Chromotography using polystyrene standards); and 3) optionally, from 0.3(J) and 0.75(J) internal unsaturations per 1000 carbons as determined by 1 H NMR spectroscopy, where J is the number of reactive groups per 1000 carbons for the mixture of vinyl terminated polyolefins that become PO and PO*, before they are coupled by an alkene metathesis catalyst.

First claim

What is claimed is:

1. A composition comprising a multiblock polyolefin;
wherein the polyolefin is a mixture of about 30 weight % to about 70 weight % of PO—C(R 11 )(R 12 )—C(R 13 )═C(R 14 )—C(R 15 )(R 16 )—PO*, about 1 weight % to about 30 weight % of PO—C(R 11 )(R 12 )—C(R 13 )═C(R 14 )—C(R 15 )(R 16 )—PO and about 1 weight % to about 30 weight % PO*-C(R 11 )(R 12 )—C(R 13 )═C(R 14 )—C(R 15 )(R 16 )—PO*;
wherein R 11 , R 12 , R 13 , R 14 , R 15 , and R 16 , are each independe…

Assignees

• Hagadorn John R
• Ruff Charles J
• Ganesh Renuka N
• Brant Patrick
• Exxonmobil Chem Patents Inc

Inventors

• Hagadorn John R
• Ruff Charles J
• Ganesh Renuka N
• Brant Patrick

Classifications

• C08G61/04 Primary

  Chemistry & Metallurgy · mapped topic

• C08L65/00

  Chemistry & Metallurgy · mapped topic

• C08G2261/419

  Chemistry & Metallurgy · mapped topic