Patent US3676550A successfully refreshed from Google Patents.
US3676550A
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Modification of reduced keratinous substrates with a vinyl monomer
Assignee: Colgate Palmolive Co
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Filing: 1969-05-29
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Granted: 1972-07-11
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Expires: 1989-05-29
Abstract
Abstract A process for the treatment of a keratinous substrate comprising the steps of (1) reduction of the substrate and (2) contacting same with a solution of vinyl monomer and free radical liberating catalyst, step (2) being effected in the presence of a watersoluble halide.
Inventors
- 👤 Giuseppe Anzuino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:01
CPC Classifications
A; A61; A61Q; A61Q5/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46; A61K8/463; A61K8/72; A61K8/81; A61K8/8141; A61K8/8152; D; D06; D06M; D06M14/00; D06M14/02; D06M14/06; D06M14/18; D06M14/20; D06M14/24; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
12 words
A process according to claim 1 wherein said halide is lithium bromide.
Claim 2
Dependent Claim
80 words
a vinyl monomer, containing at least one grouping of the formula: said monomer undergoing polymerization in the presence of said peroxide catalyst, said process being effected in the presence of from 0.025 to 40 moles per mole of monomer of a water-soluble halide of an alkali meTal or ammonium, the concentration of said monomer being from 1 to 30 percent by weight of the total solution, the molar ratio of said peroxide catalyst to monomer being 0.001:1 to 5:1; and
Claim 3
Dependent Claim
3 words
an inert solvent.
Claim 4
Dependent Claim
14 words
A process according to claim 1 wherein said peroxide catalyst material is potassium persulfate.
Claim 5
Dependent Claim
163 words
A process according to claim 1 wherein said monomer is a compound of the following structural formula wherein R is selected from the group consisting of hydrogen and lower alkyl and R1 is selected from the group consisting of a. carbalkoxy of the formula -COOR2 wherein R2 is selected from the group consisting of hydrogen, alkyl containing from one to 20 carbon atoms, alkenyl containing from three to 10 carbon atoms, hydroxyalkyl containing from two to 10 carbon atoms, vicinal epoxyalkyl containing from one to 10 carbon atoms and mono and dialkylaminoalkyl each of said alkyl containing from one to four carbon atoms and b. amido of the following structural formula wherein R3 and R4 are independently selected from the group consisting of hydrogen, lower alkyl or together represent the atoms necessary to complete a grouping of the formula wherein R5 represents lower alkylene c. halogen d. alkoxy e. cyano and f. alkenyl aryl said alkenyl containing from one to four carbon atoms.
Claim 6
Dependent Claim
12 words
A process according to claim 1 wherein said monomer is methyl methacrylate.
Claim 7
Dependent Claim
15 words
A process according to claim 1 wherein said alkali metal is sodium, lithium or potassium.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |