US4008202A
Expired / Lapsed
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Aqueous thickening agents derived from vinyl benzyl ether polymers
Assignee: Dow Chemical Co
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Filing: 1972-06-29
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Granted: 1977-02-15
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Expires: 1992-06-29
Abstract
Abstract A novel polymer of a vinyl benzyl ether monomer and at least one other copolymerizable monomer, at least one of which other monomers has a carboxylic acid group, an anhydride group, a sulfate group, a sulfonate group or a hydroxyl group is disclosed. The vinyl benzyl ether monomer has the formula ##STR1## wherein R is hydrogen or methyl, m is about 10 to 100 and Y is ##STR2## where R 1 is an alkyl, aralkyl or alkaryl hydrophobic group of 10 to about 22 carbon atoms, R 2 is an alkyl group of 1 to about 22 carbon atoms and R 3 is hydrogen or an alkyl group of 1 to about 22 carbon atoms, provided R 2 and R 3 in combination have at least 10 carbon atoms.
Inventors
- 👤 Syamalarao Evani
- 👤 Frederick P. Corson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:18
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; Y; Y10; Y10S; Y10S526/00; Y10S526/932
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
A polymer comprising in polymerized form a. about 0.2 to 15 mole percent of a vinyl benzyl ether monomer having the formula ##STR11## wherein R is hydrogen or methyl and R 1 is an alkyl, alkaryl or aralkyl group of 10 to about 22 carbon atoms, and m is about 10 to 100, and; b. the balance to make 100 mole percent of one or more copolymerizable monomers provided a water solubilizing amount of at least one monomer having a carboxylic acid group, an anhydride group, a sulfate group, a sulfonate group or a hydroxyl group is present.
Claim 2
Dependent Claim
98 words
A polymer comprising in polymerized form a. about 0.2 to 15 mole percent of a vinyl benzyl ether monomer having the formula ##STR11## wherein R is hydrogen or methyl and R 1 is an alkyl, alkaryl or aralkyl group of 10 to about 22 carbon atoms, and m is about 10 to 100, and; b. the balance to make 100 mole percent of one or more copolymerizable monomers provided a water solubilizing amount of at least one monomer having a carboxylic acid group, an anhydride group, a sulfate group, a sulfonate group or a hydroxyl group is present.
Claim 3
Dependent Claim
12 words
The polymer of claim 1 wherein m is 10 to about 40.
Claim 4
Dependent Claim
19 words
The polymer of claim 1 wherein the mole percent of said ether monomer is about 0.2 to 5 percent.
Claim 5
Dependent Claim
19 words
The polymer of claim 1 wherein the mole percent of said ether monomer is about 1 to 3 percent.
Claim 6
Dependent Claim
17 words
The polymer of claim 1 wherein said water solubilizing monomer is sodium styrene sulfonate or sulfoethyl methacrylate.
Claim 7
Dependent Claim
15 words
The polymer of claim 1 wherein said water solubilizing monomer is acrylic or methacrylic acid.
Claim 8
Dependent Claim
26 words
The polymer of claim 1 wherein said water solubilizing monomer is a hydroxyalkyl acrylate or methacrylate having an alkyl group of 2 to 4 carbon atoms.
Claim 9
Dependent Claim
16 words
The polymer of claim 1 wherein said water solubilizing monomer is an unsaturated dicarboxylic acid anhydride.
Claim 10
Dependent Claim
28 words
A copolymer according to claim 8 of said anhydride, said vinyl benzyl ether and an alkenyl aromatic monomer wherein the mole ratio ranges from 1/0.25/0.75 to 1/0.01/2.99, respectively.
Claim 11
Dependent Claim
15 words
A copolymer according to claim 9 of styrene, maleic anhydride and said vinyl benzyl ether.
Claim 12
Dependent Claim
18 words
A copolymer according to claim 10 wherein said vinyl benzyl ether OR 1 group is an alkylphenoxy group.
References Cited (Backward Citations)
US3190925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |