US3801272A
Expired / Lapsed
US
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Wool treating process
Assignee: Hooker Chemical Corp
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Filing: 1971-02-11
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Granted: 1974-04-02
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Expires: 1991-02-11
Abstract
Abstract A process for teating wool and other proteinaceous material to render it shrinkproof which comprises treating the proteinaceous material with a polymerizable treating solution which comprises a urethane-polyisocyanate composition containing (OH)n, (NCO)p and GROUPS, WHEREIN N IS A NUMBER FROM 0 TO 4.5, P IS A NUMBER FROM 1.5 TO 6 AND N + P IS 3 TO 6, AND Q IS FROM 1 TO 20, WHEREIN THE SAID COMPOSITION CONTAINS TERTIARY NITROGEN, TO THE EXTENT OF AT LEAST 0.05 PERCENT BY WEIGHT AND, THEREAFTER, CURING THE THUSTREATED PROTEINACEOUS MATERIAL WITH WATER.
Inventors
- 👤 G Wagner
- 👤 W Vullo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:54
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8041; C08G18/28; C08G18/30; C08G18/302; C08G18/32; C08G18/3271; C08G18/3278; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/64; C08G18/6415; C08G18/6446; C08G18/8009; C08G18/8022; C08G18/8051; Y; Y10; Y10S; Y10S8/00; Y10S8/11
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
88 words
The method as claimed in claim 1 wherein the urethane-poly-isocyanate is the reaction product of a polyhydroxy compound containing m hydroxyl groups, and a diisocyanate, which reactants are in a ratio of 1 mole of polyhydroxy compound to m - n mole of diisocyanate, wherein m is a number from 3 to 6, n is a number from 0 to 4.5 and m - n is at least 1.5, and wherein from about 1 to 100 percent of the polyhydroxy compound reacted is a polyhydroxy tertiary nitrogenous compound.
Claim 2
Dependent Claim
20 words
The method as claimed in claim 2 wherein the urethane-poly-isocyanate in the treating solution is an isocyanate having the formula:
Claim 3
Dependent Claim
46 words
The method as claimed in claim 1 wherein the urethane-poly-isocyanate is formed by reacting a tertiary nitrogenous hydroxy compound containing from one to six hydroxyl groups with an isocyanate material selected from the group consisting of polyisocyanates and urethane-poly-isocyanates containing from two to six isocyanate groups.
Claim 4
Dependent Claim
28 words
The method as claimed in claim 4 wherein the nitrogenous compound is triethand amine and the isocyanate material is the reaction product of toluene diisocyanate and castor oil.
Claim 5
Dependent Claim
36 words
The method as claimed in claim 2 wherein the urethane-poly-isocyanate is contained in the treating solution in an amount within the range of from about 1 percent to about 50 percent by weight of the solution.
Claim 6
Dependent Claim
59 words
The method as claimed in claim 2 wherein the impregnated proteinAceous textile material is pre-cured in air, in exposure to atmospheric moisture and the final cure is effected by immersing the impregnated proteinaceous textile material in water at a temperature of from about 30*C. to about 100*C. for a period of from about 1 hour to about 1 minute.
Claim 7
Dependent Claim
20 words
The method as claimed in claim 1 wherein the polyhydroxy tertiary nitrogenous compound is selected from the group consisting of
Claim 8
Dependent Claim
25 words
The method as claimed in claim 1 wherein the pH of the water employed as the curing agent is from about 7.5 to about 9.
Claim 9
Dependent Claim
13 words
A proteinaceous textile material prepared in accordance with the process of claim 1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |