Patent US4267103A successfully refreshed from Google Patents.
US4267103A
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Solvent polymerization of carboxyl containing monomers
Assignee: Goodrich Corp
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Filing: 1978-12-07
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Granted: 1981-05-12
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Expires: 1998-12-07
Abstract
Abstract Carboxyl or carboxyl salt containing polymers are prepared by polymerizing carboxyl containing monomers wherein greater than one percent of the carboxyl groups are neutralized with an alkali, ammonia or an amine, optionally copolymerized with other vinylidene monomers containing at least one terminal CH 2 ═CH< group dissolved in a solvent for the monomers which is a non-solvent for the polymer with a free radical catalyst, so that the resulting polymer is obtained suspended as a fine, readily recoverable substantially non-swollen fine powder. The solvents used are moderately to strongly hydrogen bonded and have solubility parameters of from about 8 to 15.
Inventors
- 👤 Louis Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:22
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/04; C08F22/00; Y; Y10; Y10S; Y10S526/00; Y10S526/923; Y10S526/93
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
90 words
A process for preparing polymers of olefinically unsaturated polymerizable carboxylic acid monomers in a solvent consisting essentially of a moderate to strongly hydrogen bonded solvent having a hydrogen bonding number from about 0.7 to 1.7 and solubility parameters of greater than about 8 up to about 15 which comprises converting at least three weight percent of said carboxylic acid monomer to a salt by reaction with an alkali, ammonia or amine and wherein said acid monomer comprises at least 70 weight percent of total monomers being polymerized in said solvent.
Claim 2
Dependent Claim
90 words
A process for preparing polymers of olefinically unsaturated polymerizable carboxylic acid monomers in a solvent consisting essentially of a moderate to strongly hydrogen bonded solvent having a hydrogen bonding number from about 0.7 to 1.7 and solubility parameters of greater than about 8 up to about 15 which comprises converting at least three weight percent of said carboxylic acid monomer to a salt by reaction with an alkali, ammonia or amine and wherein said acid monomer comprises at least 70 weight percent of total monomers being polymerized in said solvent.
Claim 3
Dependent Claim
111 words
A process for preparing polymers of unsaturated polymerizable carboxylic monomers which comprises polymerizing said acid monomers wherein said acid monomer comprises at least 70 weight percent of the total monomers being copolymerized, at least three weight percent of said carboxylic acid monomer being a salt of an alkali metal, ammonia or amine, in a polymerization medium solvent for said monomers which is a non-solvent for said polymers consisting essentially of a moderate to strongly hydrogen bonded ester or ketone solvent having a hydrogen bonding number from about 0.7 to 1.7 and a solubility parameter of greater than about 8 up to about 15 whereby said polymer is obtained in powdered form.
Claim 4
Dependent Claim
111 words
A process for preparing polymers of unsaturated polymerizable carboxylic monomers which comprises polymerizing said acid monomers wherein said acid monomer comprises at least 70 weight percent of the total monomers being copolymerized, at least three weight percent of said carboxylic acid monomer being a salt of an alkali metal, ammonia or amine, in a polymerization medium solvent for said monomers which is a non-solvent for said polymers consisting essentially of a moderate to strongly hydrogen bonded ester or ketone solvent having a hydrogen bonding number from about 0.7 to 1.7 and a solubility parameter of greater than about 8 up to about 15 whereby said polymer is obtained in powdered form.
Claim 5
Dependent Claim
26 words
A process of claim 2 wherein said carboxylic monomer contains at least one activated carbon to carbon olefinic double bond and at least one carboxyl group.
Claim 6
Dependent Claim
78 words
A process of claim 3 wherein said carboxylic acid monomer is selected from the group consisting of acrylic acid, methacrylic acid, and maleic acid present in amount of at least 70 weight percent of the monomers being polymerized, at least 3 weight percent of said carboxylic acid monomers are in the form of an alkali metal or ammonium salt, and the solvent is a ketone or an ester having a solubility parameter of about 8.5 to about 14.5.
Claim 7
Dependent Claim
28 words
A process of claim 4 wherein said carboxylic acid monomer is copolymerized with at least one other vinylidene monomer containing at least one terminal CH 2 ═CH< group.
Claim 8
Dependent Claim
42 words
A process of claim 5 wherein said vinylidene monomer is an ester having the formula, ##STR5## wherein R' is hydrogen or an alkyl group containing 1 to 6 carbon atoms and R is an alkyl group containing 1 to 30 carbon atoms.
Claim 9
Dependent Claim
61 words
A process of claim 6 wherein said carboxylic acid is acrylic acid and there is present at least one acrylic acid ester wherein R is an alkyl group containing 10 to 30 carbon atoms and at least one other acrylic acid ester wherein R contains 1 to 9 carbon atoms, each present in amounts less than about 20 weight percent each.
Claim 10
Dependent Claim
44 words
A process of claim 3 wherein there is copolymerized with said acid monomer a polymerizable cross-linking monomer containing CH 2 ═C< groups and at least one other olefinic polymerizable grouping, the unsaturated bonds of said polymerizable grouping being nonconjugated with respect to the other.
Claim 11
Dependent Claim
44 words
A process of claim 4 wherein there is copolymerized with said acid monomer a polymerizable crosslinking monomer containing CH 2 ═C< groups and at least one other olefinic polymerizable grouping, the unsaturated bonds of said polymerizable grouping being nonconjugated with respect to the other.
Claim 12
Dependent Claim
41 words
A process of claim 8 wherein said crosslinking monomer comprises a polyalkenyl polyether of polyhydric alcohol containing more than one alkenyl group per molecule and wherein the polyhydric alcohol contains at least 4 carbon atoms and at least 3 hydroxyl groups.
Claim 13
Dependent Claim
24 words
A process of claim 10 wherein said crosslinking monomer is a monomeric polyether of an oligosaccharide and the hydroxyls are etherified with allyl groups.
Claim 14
Dependent Claim
55 words
A process of claim 6 wherein there is polymerized from 70 to 87 weight percent of the carboxylic acid monomer, 2 to 20 weight percent of an acrylic ester wherein R contains 10 to 30 carbon atoms and 5 to 30 weight percent of an acrylic ester wherein R contains 1 to 9 carbon atoms.
Claim 15
Dependent Claim
54 words
A process of claim 6 wherein there is polymerized from 70 to 87 weight percent of the carboxylic acid monomers, 2 to 20 weight percent of an acrylic ester wherein R contains 10 to 30 carbon atoms and 5 and 30 weight percent of at least one other acrylic or methacrylic nitrile or amide.
Claim 16
Dependent Claim
17 words
A process of claim 12 wherein the acrylic ester is isodecyl methacrylate, lauryl methacrylate or stearyl methacrylate.
Claim 17
Dependent Claim
12 words
A process of claim 11 wherein the crosslinking monomer is allyl sucrose.
Claim 18
Dependent Claim
11 words
A process of claim 11 wherein the crosslinking monomer is allylpentaerithritol.
Claim 19
Dependent Claim
73 words
A process of claim 11 wherein the carboxylic acid is from 70 to 95 weight percent acrylic acid, the acrylic ester is selected from the group consisting of lauryl acrylate, stearyl acrylate and stearyl methacrylate, from about 1 to 3 weight percent of a crosslinking monomer containing CH 2 ═C< grouping and at least one other olefinic polymerizable grouping, the unsaturated bonds of said polymerizable grouping being nonconjugated with respect to each other.
Claim 20
Dependent Claim
40 words
A process of claim 4 wherein said ester solvent is an alkyl ester wherein the alkyl group contains 1 to 4 carbon atomms and that portion of the ester normally derived from an acid contains 2 to 6 carbon atoms.
Claim 21
Dependent Claim
22 words
A process of claim 18 wherein said ester is an alkyl acetate wherein the alkyl group contains 1 to 4 carbon atoms.
Claim 22
Dependent Claim
24 words
A process of claim 19 wherein said salt is 5 to 20 weight percent of potassium salt and the alkyl acetate is ethyl acetate.
Claim 23
Dependent Claim
15 words
A process of claim 4 wherein said solvent has solubility parameters of 8.5 to 12.
Claim 24
Dependent Claim
41 words
A process of claim 10 wherein said solvent has a solubility parameter of 8.5 to 12 and the salt is a potassium salt in amount of about 5 to 25 weight percent of the carboxyl groups in the potassium salt form.
Claim 25
Dependent Claim
16 words
A process of claim 22 wherein said solvent has a solubility parameter of 9 to 11.
Claim 26
Dependent Claim
34 words
A process of claim 23 wherein said solvent is ethyl acetate and the alkali is potassium present in amount greater than about 4 weight percent of the total carboxyl groups in the carboxyl monomer.
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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) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |