Patent US3974128A successfully refreshed from Google Patents.
US3974128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of maleic anhydride interpolymers
Assignee: Gillette Co LLC
•
Filing: 1974-02-04
•
Granted: 1976-08-10
•
Expires: 1994-02-04
Abstract
Abstract Water-insoluble alkyl half ester interpolymers and water-insoluble ammonium and amine salts thereof, and hair spray compositions made therefrom; said interpolymers consisting essentially of the structural units: --CH-CH2-CH-CH-- and --CH-CH2-CH-CH-- ¦¦¦ ¦¦¦ OO=CC=O OO=CC=O ¦¦¦ ¦¦¦ R1XY R2XY Unit I Unit II obtained by interpolymerizing maleic anhydride with two different alkyl vinyl ethers, R1-O-CO=CH2 and R2-O-CH=CH2, followed by partial esterification with an alkanol having 1 to 8 carbon atoms.
Inventors
- 👤 Ira Jordan Block
- 👤 Phillip Edward Sokol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:00
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/06; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8164; C; C08; C08F; C08F8/00; C08F8/44
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
180 words
A water-insoluble interpolymer consisting essentially of the structural units: ##EQU3## wherein R 1 represents an alkyl radical having from 8 to 18 atoms; wherein R 2 represents an alkyl radical having from 1 to 3 carbon atoms; and wherein X and Y each independently represent a radical selected from the group consisting of (1) an alkoxy radical having from 1 to 8 carbon atoms and (2) the hydroxy radical; the proportion of alkoxy radicals in the total number of X and Y radicals being from about 40 percent to about 60 percent; there being from about 0.01 to about 43 mole percent of Unit I and from about 57 to about 99.99 mole percent of Unit II in the interpolymer, based on the total number of moles of structural Units I and II in the interpolymer; the Brookfield viscosity of said interpolymer being from about 100 cps. to about 4,000 cps. at 25°C. and at 30% concentration in ethanol using a No. 2 spindle with a 250 cc. beaker, the percentage being based on the weight of the total solution.
Claim 2
Dependent Claim
180 words
A water-insoluble interpolymer consisting essentially of the structural units: ##EQU3## wherein R 1 represents an alkyl radical having from 8 to 18 atoms; wherein R 2 represents an alkyl radical having from 1 to 3 carbon atoms; and wherein X and Y each independently represent a radical selected from the group consisting of (1) an alkoxy radical having from 1 to 8 carbon atoms and (2) the hydroxy radical; the proportion of alkoxy radicals in the total number of X and Y radicals being from about 40 percent to about 60 percent; there being from about 0.01 to about 43 mole percent of Unit I and from about 57 to about 99.99 mole percent of Unit II in the interpolymer, based on the total number of moles of structural Units I and II in the interpolymer; the Brookfield viscosity of said interpolymer being from about 100 cps. to about 4,000 cps. at 25°C. and at 30% concentration in ethanol using a No. 2 spindle with a 250 cc. beaker, the percentage being based on the weight of the total solution.
Claim 3
Dependent Claim
149 words
A water-insoluble interpolymer, according to claim 1, wherein the free carboxyl groups of said interpolymer have been neutralized by ammonia, a primary, secondary, or tertiary alkylamine, alkanolamine, or alkylalkanolamine of the formula ##STR5## where Z 1 , Z 2 , and Z 3 are all hydrogen to make up ammonia, where Z 1 , Z 2 , and Z 3 are individually selected from the group consisting of hydrogen and of alkyl radicals having 1 to 18 carbon atoms to make up the alkylamine, where Z 1 , Z 2 , and Z 3 are individually selected from the group consisting of hydrogen and of hydroxyethyl and hydroxypropyl radicals to make up the alkanolamine, or where Z 1 , Z 2 , and Z 3 are mixtures of alkyl and hydroxyalkyl groups as described to make up the alkylalkanolamine, to give the ammonium or amine salts of said interpolymer.
Claim 4
Dependent Claim
35 words
A water-insoluble interpolymer, according to claim 2, wherein from about 5 to about 50 percent of the free carboxyl groups of said interpolymer have been neutralized to form the ammonium, alkylamine, alkanolamine, or alkylalkanolamine salts.
Claim 5
Dependent Claim
50 words
A water-insoluble interpolymer, according to claim 1, wherein the Brookfield viscosity is from about 200 cps. to about 3000 cps. at 25°C and at 30 percent concentration in ethanol using a No. 2 spindle with a 250 cc. beaker, the percentage being based on the weight of the total solution.
Claim 6
Dependent Claim
22 words
A water-insoluble interpolymer, according to claim 1, wherein R 1 is a stearyl radical and wherein R 2 is an ethyl radical.
Claim 7
Dependent Claim
29 words
A water-insoluble interpolymer, according to claim 5, wherein the free carboxyl groups have been neutralized according to claim 3 to give the ammonium or amine salts of said interpolymer.
Claim 8
Dependent Claim
54 words
A water-insoluble interpolymer, according to claim 6, wherein X and Y each independently represent a radical selected from the group consisting of (1) an ethoxy radical and (2) an hydroxy radical; the proportion of ethoxy radicals in the total number of X and Y radicals being from about 40 percent to about 60 percent.
Claim 9
Dependent Claim
29 words
A water-insoluble interpolymer, according to claim 7, wherein the free carboxyl groups have been neutralized according to claim 3 to give the ammonium or amine salts of said interpolymer.
Claim 10
Dependent Claim
22 words
A water-insoluble interpolymer, according to claim 1, wherein R 1 is a stearyl radical and wherein R 2 is a methyl radical.
Claim 11
Dependent Claim
29 words
A water-insoluble interpolymer, according to claim 9, wherein the free carboxyl groups have been neutralized according to claim 3 to give the ammonium or amine salts of said interpolymer.
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) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |