US4207405A
Expired / Lapsed
US
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Water-soluble phosphorus containing carboxylic polymers
Assignee: Goodrich Corp
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Filing: 1978-05-03
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Granted: 1980-06-10
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Expires: 1998-05-03
Abstract
Abstract The compositions are formed as the reaction product, preferably in an organic solvent, of phosphorous acid or PCl 3 and a water-soluble carboxyl polymer. A precursor of phosphorous acid, which precursor is capable of generating phosphorous acid in aqueous solution, may be used, and preferably, the water-soluble carboxyl polymer has a relatively low molecular weight, preferably in the range from about 400 to about 6000. The molar ratio of the reactants, namely of carboxyl polymer, calculated as carboxyl groups to phosphorous acid is in the range from about 10:1 to about 1:1. The carboxyl polymer, such as polyacrylic acid, may be derived from an α,β-olefinically unsaturated monomer having a carboxyl group, or the carboxyl polymer such as an acid anhydride polymer may be derived from a monomer readily converted to one having a carboxylic acid group.
Inventors
- 👤 William F. Masler, III
- 👤 David C. Spaulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:12
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/40; C02; C02F; C02F1/00; C02F1/52; C02F1/54; C02F1/56; C02F5/00; C02F5/08; C02F5/10
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
119 words
A composition comprising the reaction product of a water soluble carboxyl polymer having a molecular weight in the range from about 400 to about 10,000 and phosphorous acid or precursors thereof in a mole ratio of carboxyl groups in the carboxyl polymer to phosphorous acid in the range of from about 10:1 to about 1:1, calculated as the ratio of titratable carboxyl groups to phosphorous acid, said reaction product being formed by heating said carboxyl polymer and phosphorus acid as a homogeneous reaction mass under anhydrous conditions in a suitable organic solvent medium, said reaction product including a polymer having both carboxyl and phosphonic acid groups, two phosphorus atoms being bound to a reacted carboxyl moiety by phosphorus-to-carbon bonds.
Claim 2
Dependent Claim
119 words
A composition comprising the reaction product of a water soluble carboxyl polymer having a molecular weight in the range from about 400 to about 10,000 and phosphorous acid or precursors thereof in a mole ratio of carboxyl groups in the carboxyl polymer to phosphorous acid in the range of from about 10:1 to about 1:1, calculated as the ratio of titratable carboxyl groups to phosphorous acid, said reaction product being formed by heating said carboxyl polymer and phosphorus acid as a homogeneous reaction mass under anhydrous conditions in a suitable organic solvent medium, said reaction product including a polymer having both carboxyl and phosphonic acid groups, two phosphorus atoms being bound to a reacted carboxyl moiety by phosphorus-to-carbon bonds.
Claim 3
Dependent Claim
182 words
A composition of claim 1 selected from the group consisting of a reaction product consisting essentially of a water-soluble carboxyl polymer having a molecular weight in the range from about 400 to about 10,000 and phosphorous acid or precursor thereof, in a molar ratio of carboxyl polymer having repeating units conforming to the structure ##STR5## wherein R represents H, CH 3 or CH 2 --COOH, R 1 represents alkyl having from 1 to 18 carbon atoms; R 2 represents alkylene having from 2 to 4 carbon atoms, and vinyl having the structure ##STR6## wherein R' represents O-R"' and NH- C(0)R"' R" may be H or R 1 and, R"' may be H or R 1 x may be in the range from 0 to about 5, a and b each represent from 0 to 100 weight percent, based on the combined weight of a+b+c, c represents from 0 to about 30 weight percent based on the combined weight of a+b+c, the sum of the numerical values of a+b+c is always 100, and the monomeric groups are present in a heterogenous relative order.
Claim 4
Dependent Claim
87 words
The composition of claim 2 wherein said carboxyl polymer has a molecular weight in the range from about 400 to about 6000 and contains from about 60 to 100 percent acrylic or titratable methacrylic acid, R represents H and CH 3 b is O, and repeating unit ##STR7## consists essentially of repeating units ##STR8## wherein m is in the range from 0 to 100 weight percent, and correspondingly, n is in the range from 100 to 0 weight percent, and the sum of m+n+c is always 100.
Claim 5
Dependent Claim
145 words
The composition of claim 1 wherein said carboxyl polymer has repeating units conforming to the structure ##STR9## wherein R represents H, CH 3 or CH 2 --COOH, R 1 represents alkyl having from 1 to 18 carbon atoms, R 2 represents alkylene having from 2 to 4 carbon atoms, and vinyl having the structure ##STR10## wherein R' represents O--R"' and NH--C(0)R"' R" may be H or R 1 , and R"' may be H or R 1 " x may be in the range from 0 to about 5, a and b each represent from 0 to 100 weight percent, based on the combined weight of a+b+c, c represents from 0 to about 30 weight percent based on the combined weight of a+b+c, the sum of the numerical values of a+b+c is always 100, and the monomeric groups are present in a heterogenous relative order.
Claim 6
Dependent Claim
13 words
The composition of claim 1 wherein said composition is essentially free from solvent.
Claim 7
Dependent Claim
125 words
A composition formed by (a) heating, under anhydrous conditions, a carboxyl polymer having a molecular weight in the range from about 400 to about 10,000 and containing about 0.5 to 2.0 equivalents per hundred of polymer of bound COOH groups with phosphorous acid or precursor thereof, as a homogeneous reaction mass in a suitable organic solvent medium, said carboxyl polymer and phosphorous acid being present in a molar ratio in the range from about 10:1 to about 1:1, said molar ratio being calculated as the molar ratio of titratable carboxyl groups to phosphorous acid, (b) treating said mixture with water, (c) distilling said mixture to remove volatiles and (d) recovering a hydrolyzed reaction product of said carboxyl polymer and said phosphorous acid, or precursors thereof.
Claim 8
Dependent Claim
125 words
A composition formed by (a) heating, under anhydrous conditions, a carboxyl polymer having a molecular weight in the range from about 400 to about 10,000 and containing about 0.5 to 2.0 equivalents per hundred of polymer of bound COOH groups with phosphorous acid or precursor thereof, as a homogeneous reaction mass in a suitable organic solvent medium, said carboxyl polymer and phosphorous acid being present in a molar ratio in the range from about 10:1 to about 1:1, said molar ratio being calculated as the molar ratio of titratable carboxyl groups to phosphorous acid, (b) treating said mixture with water, (c) distilling said mixture to remove volatiles and (d) recovering a hydrolyzed reaction product of said carboxyl polymer and said phosphorous acid, or precursors thereof.
Claim 9
Dependent Claim
144 words
The composition of claim 6 wherein said carboxyl polymer has repeating units conforming to the structure ##STR11## wherein R represents H, CH 3 or CH 2 --COOH, R 1 represents alkyl having from 1 to 18 carbon atoms, R 2 represents alkylene having from 2 to 4 carbon atoms, and vinyl having the structure ##STR12## wherein R' represents O--R" and NH--C(0)R"', R" may be H or R 1 and, R"' may be H or R 1 , x may be in the range from 0 to bout 5, a and b each represent from 0 to 100 weight percent, based on the combined weight of a+b+c, c represents from 0 to about 20 weight percent based on the combined weight of a+b+c, the sum of the numerical values of a+b+c is always 100, and the monomeric groups are present in a heterogeneous relative order.
Claim 10
Dependent Claim
58 words
The composition of claim 7 wherein R represents H and CH 3 , b is 0 and repeating unit ##STR13## consists essentially of repeating units ##STR14## wherein m is in the range from 0 to 100 percent, and correspondingly, n is in the range from 100 to 0 weight percent, and the sum of m+n+c is always 100.
Claim 11
Dependent Claim
18 words
A composition of claim 1 wherein the solvent is selected from the group consisting of sulfolane and tetrahydrofuran.
Claim 12
Dependent Claim
9 words
A water solution of a composition of claim 1.
Claim 13
Dependent Claim
9 words
A water solution of a composition of claim 2.
Claim 14
Dependent Claim
9 words
A water solution of a composition of claim 3.
Claim 15
Dependent Claim
9 words
A water solution of a composition of claim 4.
Claim 16
Dependent Claim
9 words
A water solution of a composition of claim 5.
Claim 17
Dependent Claim
9 words
A water solution of a composition of claim 6.
Claim 18
Dependent Claim
9 words
A water solution of a composition of claim 7.
Claim 19
Dependent Claim
104 words
A composition comprising the reaction product of polyacrylic acid having a molecular weight from about 800 to about 6,000 reacted with phosphorous acid or a precursor thereof in a mole ratio of carboxyl groups in the polyacrylic acid to phosphorous acid in the range of from about 10:1 to about 1:1, calculated as the ratio of titratable carboxyl groups to phosphorous acid, said reaction product being formed by heating the polyacrylic acid and phosphorous acid as a homogeneous reaction mass under anhydrous conditions in a suitable organic solvent medium, said reaction product containing from about 1 to about 20 total weight percent of phosphorus.
Claim 20
Dependent Claim
104 words
A composition comprising the reaction product of polyacrylic acid having a molecular weight from about 800 to about 6,000 reacted with phosphorous acid or a precursor thereof in a mole ratio of carboxyl groups in the polyacrylic acid to phosphorous acid in the range of from about 10:1 to about 1:1, calculated as the ratio of titratable carboxyl groups to phosphorous acid, said reaction product being formed by heating the polyacrylic acid and phosphorous acid as a homogeneous reaction mass under anhydrous conditions in a suitable organic solvent medium, said reaction product containing from about 1 to about 20 total weight percent of phosphorus.
Claim 21
Dependent Claim
44 words
A composition of claim 7 wherein said polyacrylic acid has a molecular weight from about 1,000 to about 3,000 and contains from about 6 to 16 weight percent total phosphorous, of which at least about 1 weight percent is bound to said polyacrylic acid.
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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) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |