Patent US3645781A successfully refreshed from Google Patents.
US3645781A
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Treatment of keratinous fibers and fabrics
Assignee: Novartis AG
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Filing: 1969-07-14
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Granted: 1972-02-29
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Expires: 1989-07-14
Abstract
Abstract The present invention relates to a process for rendering keratinous material, particularly wool, resistant to shrinkage and for imparting durable press characteristics to the material. The products used therefor are polythiol compounds containing in the molecule (a) a radical of a polyhydric alcohol, (b) poly(oxyalkylene) chains, and (c) radicals of mercapto-ethers or mercapto-esters.
Inventors
- 👤 Thomas D Brown
- 👤 Michael Rushforth
- 👤 Bryan Dobinson
- 👤 Walter Wilson
- 👤 Kenneth Winterbottom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:24
CPC Classifications
D; D06; D06M; D06M23/00; C; C07; C07C; C07C323/00; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/32; C08G65/329; C08G65/334; C08G65/3342; D06M15/00; D06M15/19; D06M15/37; D06M15/63; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2385; Y10T442/2393; Y10T442/2762
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
19 words
A process according to claim 1 which comprises treating the keratinous material with a polythiol resin of the formula
Claim 2
Dependent Claim
39 words
A process according to claim 1, which comprises treating the keratinous material with a polythiol prepared by the reaction of a polyhydric alcohol with an alkylene oxide followed by esterification of the terminal hydroxy groups with a mercaptocarboxylic acid.
Claim 3
Dependent Claim
36 words
A process according to claim 1, which comprises treating the keratinous material with the polythiol in the presence of a catalyst selected from the group consisting of a base, a free radical catalyst and a siccative.
Claim 4
Dependent Claim
25 words
A process according to claim 1, which comprises curing the polythiol resin on the keratinous material at a temperature ranging from 30* to 180* C.
Claim 5
Dependent Claim
48 words
A process according to claim 1, which comprises treating the keratinous material with the polythiol resin in the form of a solution in a solvent containing at most three carbon atoms and selected from the group consisting of a chlorinated hydrocarbon, a fluorinated hydrocarbon and a chlorofluorinated hydrocarbon.
Claim 6
Dependent Claim
21 words
A process according to claim 1, which comprises treating with the polythiol a wool fabric which has been previously flat set.
Claim 7
Dependent Claim
19 words
A process according to claim 2, which comprises treating the keratinous material with a polythiol resin of the formula
Claim 8
Dependent Claim
19 words
A process according to claim 2, which comprises treating the keratinous material with a polythiol resin of the formula
Claim 9
Dependent Claim
27 words
A process according to claim 4, which comprises employing the catalyst in a quantity of 0.1 to 20 percent, based on the weight of the polythiol employed.
Claim 10
Dependent Claim
87 words
A process according to claim 8, which comprises treating the keratinous material with a polythiol resin of the formula in which R2 represents an aliphatic hydrocarbon radical having at least three and at most six carbon atoms, each ''alkylene'' group contains a chain of at least two and at the most six carbon atoms between consecutive oxygen atoms, m, p2 and u each represents a positive integer, m is at least 1, p2 is at least 3 and at most 6, and u is at most 2.
Claim 11
Dependent Claim
71 words
A process according to claim 9, which comprises treating the keratinous material with a polythiol resin of the formula in which R2 represents an aliphatic hydrocarbon radical having at least three and at the most six carbon atoms, m, p2 and t each represents a positive integer, m is at least 1, p2 is at least 3 and at most 6, and t is at least 2 and at most 3.
Claim 12
Dependent Claim
19 words
A process according to claim 9, which comprises treating the keratinous material with a polythiol resin of the formula
Claim 13
Dependent Claim
22 words
A process according to claim 11, which comprises treating the keratinous material with a polythiol resin corresponding to one of the formulas
Claim 14
Dependent Claim
19 words
A process according to claim 12, which comprises treating the keratinous material with a polythiol resin of the formula
Claim 15
Dependent Claim
19 words
A process according to claim 13, which comprises treating the keratinous material with a polythiol resin of the formula
Claim 16
Dependent Claim
19 words
A process according to claim 14, which comprises treating the keratinous material with a polythiol resin of the formula
Claim 17
Dependent Claim
84 words
Keratinous materials bearing thereon from 0.5 to 15 percent by weight of a cured polythiol resin having three to six thiol groups per molecule a molecular weight between 400 and 10,000 and containing a. a radical of a polyhydric alcohol, b. at least two poly(oxyalkylene) chains bound to the polyhydric alcohol radical, and c. three to six radicals selected from the group consisting of acyl radicals of thiol-containing aliphatic carboxylic acids and a radical after removal of a hydroxyl group, of thiol-containing aliphatic alcohols.
Claim 18
Dependent Claim
13 words
Keratinous materials of claim 18 wherein the materials are wool or wool fabrics.
Claim 19
Dependent Claim
16 words
The materials of claim 18 wherein the keratinous material is essentially 100 percent keratinous fiber-containing material.
Claim 20
Dependent Claim
19 words
The materials of claim 18 wherein the keratinous material comprises at least 30 percent by weight of keratinous fibers.
Claim 21
Dependent Claim
15 words
Keratinous materials as defined in claim 18 wherein the materials are garments or garment pieces.
Claim 22
Dependent Claim
19 words
Keratinous materials as defined in claim 18 wherein the polythiol resin contains three to six thiol groups per molecule.
Claim 23
Dependent Claim
19 words
Keratinous materials as defined in claim 18 wherein the polythiol resin has a molecular weight between 400 and 10,000.
Claim 24
Dependent Claim
14 words
Keratinous materials as defined in claim 18 wherein the polythiol resin has the formula
Claim 25
Dependent Claim
14 words
Keratinous materials as defined in claim 18 wherein the polythiol resin has the formula
Claim 26
Dependent Claim
18 words
Keratinous materials of claim 18 wherein the weight of the cured polythiol is from 1 to 10 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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |