US4032698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric materials with substituted urea end groups
Assignee: EIDP Inc
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Filing: 1975-10-29
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Granted: 1977-06-28
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Expires: 1995-10-29
Abstract
Abstract Polymeric materials represented by the general structure ##STR1## WHERE Q is a polymeric segment of ethylenically unsaturated monomers, lacking Zerewitinoff hydrogen atoms; X is the residue of a chain transfer agent; Y is the residue of a di-, tri- or tetraisocyanate radical after removal of isocyanate groups; A is the residue of a basic radical which, as an entity before reaction, has a pk a value of 5-14, or a salt thereof, and m and n are 1, 2 or 3 (the total not exceeding 4), are useful as pigment dispersing aids in coating compositions.
Inventors
- 👤 Thomas A. Ashe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:04
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G18/677; C08G18/678; C08F; C08F8/00; C08F8/30; C08G18/08; C08G18/10; C08G18/40; C08G18/62
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
A polymeric material represented by the structure ##STR25## where Q is a resinous polymeric or copolymeric segment of (a) an ester of acrylic acid or methacrylic acid with an alkanol of 1-18 carbon atoms; (b) styrene or acrylonitrile; (c) a vinyl ester whose ester moiety contains 2-18 carbon atoms; or (d) a vinyl ether; X is the residue of a chain transfer agent; Y is the residue of a di-, tri-, or tetraisocyanate radical after removal of isocyanate groups; A is the residue of a basic radical which, as an entity before reaction, has a pk a value of 5-14, or a salt thereof; and m and n are 1, 2 or 3, the total not exceeding 4, provided that when n is 2 or 3, only one of A need be as defined.
Claim 2
Dependent Claim
134 words
A polymeric material represented by the structure ##STR25## where Q is a resinous polymeric or copolymeric segment of (a) an ester of acrylic acid or methacrylic acid with an alkanol of 1-18 carbon atoms; (b) styrene or acrylonitrile; (c) a vinyl ester whose ester moiety contains 2-18 carbon atoms; or (d) a vinyl ether; X is the residue of a chain transfer agent; Y is the residue of a di-, tri-, or tetraisocyanate radical after removal of isocyanate groups; A is the residue of a basic radical which, as an entity before reaction, has a pk a value of 5-14, or a salt thereof; and m and n are 1, 2 or 3, the total not exceeding 4, provided that when n is 2 or 3, only one of A need be as defined.
Claim 3
Dependent Claim
20 words
The polymeric material of claim 1 wherein A is an amino-, hydroxy- or mercapto substituted amine or amine salt radical.
Claim 4
Dependent Claim
15 words
The polymeric material of claim 1 wherein A is a radical of the formula ##STR26##
Claim 5
Dependent Claim
20 words
The polymeric material of claim 1 wherein Q is a polymeric segment one of whose monomer units is methyl methacrylate.
Claim 6
Dependent Claim
31 words
The polymeric material of claim 1 wherein Q is a copolymeric segment of methyl methacrylate and an ester of acrylic acid or methacrylic acid with an alkanol of 2-12 carbon atoms.
Claim 7
Dependent Claim
15 words
The polymeric material of claim 1 wherein Q is a methyl methacrylate/2-ethylhexyl acrylate copolymeric segment.
Claim 8
Dependent Claim
20 words
The polymeric material of claim 1 wherein X is --S--R--Z where R is alkylene of 1-6 carbon atoms and ##STR27##
Claim 9
Dependent Claim
10 words
The polymeric material of claim 1 where Y is ##STR28##
Claim 10
Dependent Claim
17 words
A polymeric material represented by the structure ##STR29## where Q is a resinous methyl methacrylate/2-ethylhexylacrylate polymeric segment.
Claim 11
Dependent Claim
17 words
A polymeric material represented by the structure ##STR29## where Q is a resinous methyl methacrylate/2-ethylhexylacrylate polymeric segment.
References Cited (Backward Citations)
US3551390A
Cited
US3483123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |