US4105649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous polymeric thickening agents
Assignee: Dow Chemical Co
•
Filing: 1974-10-07
•
Granted: 1978-08-08
•
Expires: 1994-10-07
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 --OR 1 , --SR 1 , ##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
2026-11-05 13:21
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; Y; Y10; Y10S; Y10S526/00; Y10S526/932
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
146 words
A polymer comprising (a) about 0.2 to 15 mole percent of a vinyl benzyl ether monomer having the formula ##STR11## wherein R is hydrogen or methyl, m is about 10 to 100 and Y is --SR 1 , ##STR12## 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. (b) the balance to make 100 mole percent of one or more copolymerizable ethylenically unsaturated 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
146 words
A polymer comprising (a) about 0.2 to 15 mole percent of a vinyl benzyl ether monomer having the formula ##STR11## wherein R is hydrogen or methyl, m is about 10 to 100 and Y is --SR 1 , ##STR12## 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. (b) the balance to make 100 mole percent of one or more copolymerizable ethylenically unsaturated 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
20 words
The polymer of claim 1 wherein the mole percent of said ether monomer ranges from about 1 to 3 percent.
Claim 6
Dependent Claim
11 words
The polymer of claim 1 wherein the oxyalkylene group is oxyethylene.
Claim 7
Dependent Claim
12 words
The polymer of claim 5 wherein m is 10 to about 40.
Claim 8
Dependent Claim
19 words
The polymer of claim 5 wherein the mole percent of said ether monomer is about 0.2 to 5 percent.
Claim 9
Dependent Claim
20 words
The polymer of claim 5 wherein the mole percent of said ether monomer ranges from about 1 to 3 percent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-07 | 1982-02-06 | 1982-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-07 | 1986-02-06 | 1986-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-07 | 1990-02-06 | 1990-08-08 | $7700.00 | Window Closed / Lapsed |