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US5064907A Expired / Lapsed US ⏱️ 0.0 years remaining

Polymers with functional groups

Assignee: BASF SE
•
Filing: 1990-08-30
•
Granted: 1991-11-12
•
Expires: 2010-08-30
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Abstract

Abstract Modified homopolymer, random copolymers and/or block copolymers of aromatic vinyls and/or dienes contain functional groups of the general formula (I): ##STR1## where N is nitrogen, O is oxygen, Y is a substituted or unsubstituted bridge which besides carbon additionally contains N- or O-members, R is any desired organic radical, R 1 is hydrogen, alkyl, cycloalkyl or aryl, and n is a whole number greater than or equal to 1, are prepared from living anionically polymerized or from alkali metallized homopolymers, random copolymers and/or block copolymers of aromatic vinyls and/or dienes which, reacted with organic nitrogen compounds, have a nitrogen-alkali metal bond by reaction of polymers of the general formula (II) in the presence of a polar or apolar solvent with compounds of the general formula (III) where Me is an alkali metal, X is halogen and Y, O, N, R, n and R 1 (other than hydrogen) have the abovementioned meanings ##STR2##

Inventors

  • 👤 Klaus Bronstert
  • 👤 Daniel Wagner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 21:41
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 135 words
A functionally modified homopolymer, random copolymer and/or block copolymer of styrene and an anionically polymerizable conjugated C 4 -C 12 -diene, which contains one functional endgroup of the formula (I): ##STR6## where Y is a hydrocarbon chain of from 1 to 20 carbon atoms, R is an organic radical selected from the group consisting of methyl, ethyl, n-butyl and tert.-butyl, R 1 is alkyl, cycloalkyl or aryl, and n is a whole number greater than or equal to 1, as obtained by reacting said polymer functionally modified with a functional group of the formula (II): ##STR7## in the presence of a polar or apolar solvent with a compound of the formula (III): X--Y--(COOR.sup.1).sub.n (III) where Me is an alkali metal, X is halogen and Y, R, n and R 1 have the above mentioned meanings.
Claim 2
Dependent Claim 135 words
A functionally modified homopolymer, random copolymer and/or block copolymer of styrene and an anionically polymerizable conjugated C 4 -C 12 -diene, which contains one functional endgroup of the formula (I): ##STR6## where Y is a hydrocarbon chain of from 1 to 20 carbon atoms, R is an organic radical selected from the group consisting of methyl, ethyl, n-butyl and tert.-butyl, R 1 is alkyl, cycloalkyl or aryl, and n is a whole number greater than or equal to 1, as obtained by reacting said polymer functionally modified with a functional group of the formula (II): ##STR7## in the presence of a polar or apolar solvent with a compound of the formula (III): X--Y--(COOR.sup.1).sub.n (III) where Me is an alkali metal, X is halogen and Y, R, n and R 1 have the above mentioned meanings.
Claim 3
Dependent Claim 54 words
The polymer of formula (I) of claim 1, as obtained by anionically polymerizing or copolymerizing styrene and the said diene, to obtain a living polymer, reacting the living polymer with a nitrogen compound capable of forming the functionally modified polymer (II), and reacting the polymer of formula (II) with a compound of formula (III).
Claim 4
Dependent Claim 40 words
A polymer as defined in claim 1, wherein Y is a branched or unbranched hydrocarbon chain of 1 to 20 carbon atoms, R 1 is hydrogen or alkyl of 1 to 7 carbon atoms and n is 1 to 3.

References Cited (Backward Citations)

US3775378A Cited
US4680339A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-11-11 1995-05-13 1995-11-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-11-11 1999-05-13 1999-11-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-11-11 2003-05-13 2003-11-12 $7700.00 Window Closed / Lapsed

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