US4195147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of cationic amine-functional copolymers
Assignee: DeSoto Inc
•
Filing: 1979-02-22
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Granted: 1980-03-25
•
Expires: 1999-02-22
Abstract
Abstract The preparation of water dispersible amine-functional copolymers is disclosed in which a mixture of ethylenically unsaturated material including amine-functional monomer is slowly added to a heated heel of water miscible organic solvent containing a solubilizing acid in an amount to neutralize from 25% to 90% of the amine functionality in the copolymer, but insufficient to provide a pH below 5 when the copolymer is dispersed in aqueous medium.
Inventors
- 👤 Kazys Sekmakas
- 👤 Raj Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:24
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/52; C08F220/54; C08F220/60; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
43 words
A method of producing water dispersible amine-functional copolymers comprising copolymerizing monoethylenically unsaturated monomers including amine-functional monomer in organic solvent solution in the presence of a solubilizing acid in an amount to neutralize from 25% to 90% of the amine functionality in the copolymer.
Claim 2
Independent Claim
43 words
A method of producing water dispersible amine-functional copolymers comprising copolymerizing monoethylenically unsaturated monomers including amine-functional monomer in organic solvent solution in the presence of a solubilizing acid in an amount to neutralize from 25% to 90% of the amine functionality in the copolymer.
Claim 3
Dependent Claim
44 words
A method as recited in claim 1 in which said amine monomer is present in an amount of from 5% to 35% of the weight of the copolymer, and the proportion of acid is insufficient to provide a pH below 5 in aqueous medium.
Claim 4
Dependent Claim
34 words
A method as recited in claim 1 in which said copolymer consists essentially of monoethylenically unsaturated monomers which include from 10% to 25% of tertiary amine monomer, and said organic solvent is water miscible.
Claim 5
Dependent Claim
15 words
A method as recited in claim 3 in which said organic solvent is 2-butoxy ethanol.
Claim 6
Dependent Claim
19 words
A method as recited in claim 1 in which said monomers include from 5% to 40% of reactive monomers.
Claim 7
Dependent Claim
28 words
A method as recited in claim 5 in which said reactive monomer is hydroxy alkyl acrylate or methacrylate in which the alkyl group contains from 2-4 carbon atoms.
Claim 8
Dependent Claim
16 words
A method as recited in claim 6 in which said reactive monomer is hydroxy ethyl acrylate.
Claim 9
Dependent Claim
21 words
A method as recited in claim 1 in which said copolymerization is carried out in the absence of chain terminating agents.
Claim 10
Independent Claim
84 words
A method of producing water dispersible amine-functional copolymers comprising slowly adding a mixture of ethylenically unsaturated material comprising monoethylenically unsaturated monomers including amine-functional monomer in an amount of from 5% to 35% of the weight of said unsaturated material to a heated heel of water miscible organic solvent containing a solubilizing acid in an amount to neutralize from 25% to 90% of the amine functionality in the copolymer, but insufficient to provide a pH below 5 when the copolymer is dispersed in aqueous medium.
Claim 11
Independent Claim
84 words
A method of producing water dispersible amine-functional copolymers comprising slowly adding a mixture of ethylenically unsaturated material comprising monoethylenically unsaturated monomers including amine-functional monomer in an amount of from 5% to 35% of the weight of said unsaturated material to a heated heel of water miscible organic solvent containing a solubilizing acid in an amount to neutralize from 25% to 90% of the amine functionality in the copolymer, but insufficient to provide a pH below 5 when the copolymer is dispersed in aqueous medium.
Claim 12
Dependent Claim
45 words
A method as recited in claim 9 in which said copolymer consists essentially of monoethylenically unsaturated monomers which include from 10% to 25% of tertiary amine monomer, and said organic solvent is used in an amount of from 20% to 50% of said unsaturated material.
Claim 13
Dependent Claim
21 words
A method as recited in claim 10 in which said copolymerization is carried out in the absence of chain terminating agents.
Claim 14
Dependent Claim
37 words
A method as recited in claim 11 in which said amine monomer is a tertiary amine used in amount of 10% to 30% of the copolymer and said monomers include from 5% to 40% of reactive monomers.
Claim 15
Dependent Claim
8 words
The product of the method of claim 1.
Claim 16
Dependent Claim
8 words
The product of the method of claim 9.
Claim 17
Dependent Claim
8 words
The product of the method of claim 12.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |