US 9,315,595 B2 · Amine-terminated telechelic polymers and precursors thereto and methods for their preparation

Abstract

Disclosed is a method of preparing terminally functionalized telechelic polymers using a cationic living polymer product or a terminal tert-chloride chain end of a carbocationic quasiliving polymer product, which comprises quenching the polymer product with a functionalized N-substituted pyrrole to thereby introduce the functionalized N-substituted pyrrole at the terminal reactive polymer chain end(s). A method is also disclosed whereby the N-substituent may be derivatized to a basic amine containing functional group. Also disclosed are the terminal functionalized polyisobuyl N-substituted pyrrole compounds where the polyisobutyl group is substituted at the 2 and 3 position of the N-substituted pyrrole.

Claims36

Dependent claims

A method for preparing a telechelic polymer of formula I:

wherein:
R1 and R2 are independently in each —(CR1R2)— unit, hydrogen or alkyl from 1 to 6 carbon atoms;
m is an integer from 2 to 20;
Z1 is —F, —Cl, —Br, —I, —At, —CN, —NC, —N3, —NCO, —OCN, —NCS, or —SCN;
and
R′ is a monovalent polyolefin group;
comprising:
a) ionizing a polyolefin in the presence of a Lewis acid or mixture of Lewis acids to form a carbocation-terminated polyolefin;
and
b) reacting the carbocation-terminated polyolefin from step (a) with an N-substituted pyrrole of formula II:

7 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/040,256Filed 27 Sep 2013 · division

Priority

31 Mar 2009

Published

US 2014/0031497 A130 Jan 2014

Granted

19 Apr 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

C08F 8/30
Chemical modification by after-treatment: introducing nitrogen atoms or nitrogen-containing groups
C08F 8/18
Chemical modification by after-treatment: introducing halogen atoms or halogen-containing groups
C10L 1/238
Macromolecular compounds: obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
C10L 10/04
Use of additives to fuels or fires for particular purposes: for minimising corrosion or incrustation

Amine-terminated telechelic polymers and precursors thereto and methods for their preparation

Life of this patent

Amine-terminated telechelic polymers and precursors thereto and methods for their preparation

Life of this patent

Abstract

Claims36