US5753774A
Expired / Lapsed
US
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Functional group terminated polymers containing sulfonate group via sulfonation of ethylenically unsaturated polymers
Assignee: Witco Corp
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Filing: 1996-12-18
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Granted: 1998-05-19
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Expires: 2016-12-18
Abstract
Abstract Disclosed is a process for producing water-dispersible polymers, particularly condensation polymers such as polyesters, polyethers and polyamides, by forming an ethylenically unsaturated polymeric precursor by condensation polymerization of reactants including ethylenically unsaturated reactants and then sulfonating the ethylenic unsaturation of said polymeric precursor by reacting it with a sulfonating agent such as bisulfite, metabisulfite, or a mixture thereof.\!
Inventors
- 👤 Wally L. Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:26
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G69/00; C08G69/40; C08G63/6884; C08G63/6888; C08G63/91; C08G63/914; C08G63/918; C08G69/02; C08G69/26; C08G69/34; C08G69/44; C08G69/48; C08L; C08L67/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
88 words
A process for producing a water-dispersible polymer comprising: (a) forming an ethylenically unsaturated polymeric precursor, terminated at one or both ends thereof with a functional group selected from the group consisting of --OH, --NH 2 and --COOH, by condensation polymerization of reactants capable of undergoing condensation polymerization, wherein at least one of said reactants contains ethylenic unsaturation; and (b) sulfonating said ethylenically unsaturated polymeric precursor by reacting it with a sulfonating agent under conditions such that said sulfonating agent reacts with said ethylenic unsaturation and sulfonates said precursor.
Claim 2
Dependent Claim
88 words
A process for producing a water-dispersible polymer comprising: (a) forming an ethylenically unsaturated polymeric precursor, terminated at one or both ends thereof with a functional group selected from the group consisting of --OH, --NH 2 and --COOH, by condensation polymerization of reactants capable of undergoing condensation polymerization, wherein at least one of said reactants contains ethylenic unsaturation; and (b) sulfonating said ethylenically unsaturated polymeric precursor by reacting it with a sulfonating agent under conditions such that said sulfonating agent reacts with said ethylenic unsaturation and sulfonates said precursor.
Claim 3
Dependent Claim
22 words
A process according to claim 1 wherein said sulfonating agent is selected from the group consisting of bisulfites, metabisulfites, and mixtures thereof.
Claim 4
Dependent Claim
15 words
A process according to claim 1 wherein said ethylenically unsaturated polymeric precursor is a polyester.
Claim 5
Dependent Claim
34 words
A process according to claim 3 wherein said ethylenically unsaturated precursor polymer is terminated at one or both ends thereof with the same functional group selected from the group consisting of --OH and --COOH.
Claim 6
Dependent Claim
15 words
A process according to claim 1 wherein said ethylenically unsaturated polymeric precursor is a polyamide.
Claim 7
Dependent Claim
35 words
A process according to claim 5 wherein said ethylenically unsaturated precursor polymer is terminated at one or both ends thereof with a functional group selected from the group consisting of --OH, --NH 2 and --COOH.
Claim 8
Dependent Claim
15 words
A process according to claim 1 wherein said ethylenically unsaturated polymeric precursor is a polyether.
Claim 9
Dependent Claim
35 words
A process according to claim 7 wherein said ethylenically unsaturated precursor polymer is terminated at one or both ends thereof with a functional group selected from the group consisting of --OH, --NH 2 and --COOH.
Claim 10
Dependent Claim
33 words
A process according to claim 1 wherein said ethylenically unsaturated polymeric precursor is a polyester formed by condensation polymerization of a diacid and a diol one or both of which are ethylenically unsaturated.
Claim 11
Dependent Claim
33 words
A process according to claim 1 wherein said ethylenically unsaturated polymeric precursor is a polyamide formed by condensation polymerization of a diacid and a diamine one or both of which are ethylenically unsaturated.
Claim 12
Dependent Claim
87 words
A process according to claim 1 wherein said ethylenically unsaturated polymeric precursor comprises two or more blocks, each of which is a polymer selected from the group consisting of polyesters, polyamides, and polyethers, which blocks are either bonded directly to each other or are each bonded through a --C(O)NH--, --C(O)O-- or --O-- linkage to an intervening moiety containing 2 to 20 carbon atoms which is saturated or contains ethylenic unsaturation; provided that blocks which are bonded directly to each other are of types different from each other.
Claim 13
Dependent Claim
18 words
A process according to claim 11 wherein said polymeric precursor comprises a polyester block and a polyamide block.
Claim 14
Dependent Claim
18 words
A process according to claim 11 wherein said polymeric precursor comprises a polyester block and a polyether block.
Claim 15
Dependent Claim
18 words
A process according to claim 11 wherein said polymeric precursor comprises a polyether block and a polyamide block.
Claim 16
Dependent Claim
10 words
A water-dispersible polymer prepared by the process of claim 1.
Claim 17
Dependent Claim
10 words
A water-dispersible polymer prepared by the process of claim 3.
Claim 18
Dependent Claim
10 words
A water-dispersible polymer prepared by the process of claim 5.
Claim 19
Dependent Claim
10 words
A water-dispersible polymer prepared by the process of claim 7.
Claim 20
Dependent Claim
10 words
A water-dispersible polymer prepared by the process of claim 11.
Claim 21
Dependent Claim
10 words
A water-dispersible polymer prepared by the process of claim 12.
Claim 22
Dependent Claim
10 words
A water-dispersible polymer prepared by the process of claim 13.
Claim 23
Dependent Claim
10 words
A water-dispersible polymer prepared by the process of claim 14.
References Cited (Backward Citations)
US2475886A
Cited
USRE34514E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-18 | 2001-11-17 | 2002-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-18 | 2005-11-17 | 2006-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-18 | 2009-11-17 | 2010-05-19 | $7700.00 | Window Closed / Lapsed |