Patent US3989458A successfully refreshed from Google Patents.
US3989458A
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Compositions containing bisulphite adducts of polyisocyanates and method of use
Assignee: Commonwealth Scientific and Industrial Research Organisation
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Filing: 1974-08-09
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Granted: 1976-11-02
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Expires: 1994-08-09
Abstract
Abstract The addition of certain compounds - namely mineral acids, oxidising agents, materials capable of producing these acids and agents, or mixtures of the same - to BAPs or the corresponding mono-iso(thio)cyanate adducts renders these adducts more stable to storage and heat.
Inventors
- 👤 Geoffrey Bruce Guise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:53
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/53; C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/8083; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; D06M13/00; D06M13/322; D06M13/402; D06M13/432; D06M15/21; D06M15/227; D06M15/233; D06M15/507; D06M15/513; D06M15/564; D06M15/59; Y; Y10; Y10S; Y10S8/00; Y10S8/11
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
123 words
A composition comprising (1) at least one bisulphite addition product of a polyisocyanate prepolymer or a polyisothiocyanate prepolymer, said addition product having an average at least two isocyanate-bisulphite or isothiocyanate-bisulphite adduct groups per molecule having no free isocyanate or isothiocyanate groups, and being freely water-soluble; said prepolymer being the water-insoluble reaction product of a polyisocyanate or polyisothiocyanate and a polyhydroxy compound; and (2) at least one of the compounds: a. at least one mineral acid; b. at least one material capable of releasing, in aqueous solution, (a) mineral acid(s); c. at least one oxidizing agent; d. at least one material capable of releasing, in aqueous solution, (an) oxidizing agent(s); or e. a mixture of two or more of (a), (b), (c) and (d).
Claim 2
Dependent Claim
123 words
A composition comprising (1) at least one bisulphite addition product of a polyisocyanate prepolymer or a polyisothiocyanate prepolymer, said addition product having an average at least two isocyanate-bisulphite or isothiocyanate-bisulphite adduct groups per molecule having no free isocyanate or isothiocyanate groups, and being freely water-soluble; said prepolymer being the water-insoluble reaction product of a polyisocyanate or polyisothiocyanate and a polyhydroxy compound; and (2) at least one of the compounds: a. at least one mineral acid; b. at least one material capable of releasing, in aqueous solution, (a) mineral acid(s); c. at least one oxidizing agent; d. at least one material capable of releasing, in aqueous solution, (an) oxidizing agent(s); or e. a mixture of two or more of (a), (b), (c) and (d).
Claim 3
Dependent Claim
15 words
A composition according to claim 1, wherein a mixture of (a) and (c) is present.
Claim 4
Dependent Claim
22 words
A composition according to claim 1, wherein (a) is selected from the group consisting of hydrochloric acid, sulphuric acid and phosphoric acid.
Claim 5
Dependent Claim
11 words
A composition according to claim 1, wherein (c) is hydrogen peroxide.
Claim 6
Dependent Claim
27 words
A composition according to claim 1, wherein (b) is selected from the group consisting of alkali metal bisulphates, bisulphites and metabisulphites, and ammonium bisulphate, bisulphite and metabisulphite.
Claim 7
Dependent Claim
22 words
A composition according to claim 5, wherein when the salt is a bisulphite or a metabisulphite (c) or (d) is also present.
Claim 8
Dependent Claim
11 words
A composition according to claim 6, wherein hydrogen peroxide is present.
Claim 9
Dependent Claim
32 words
A composition according to claim 1, wherein (1) is a bisulphite adduct of a polyisocyanate of molecular weight from 250 to 10,000 containing from 2 to 4 bisulphite adduct groups per molecule.
Claim 10
Dependent Claim
18 words
A composition according to claim 8, wherein the polyisocyanate is derived from a polyol and an aliphatic diisocyanate.
Claim 11
Dependent Claim
23 words
A composition according to claim 9, wherein the polyol is a polypropylene oxide diol or triol of molecular weight from 250 to 4000.
Claim 12
Dependent Claim
19 words
A composition according to claim 1, wherein (1) has the structure ##STR4## where n is from 1 to 40.
Claim 13
Dependent Claim
11 words
A composition according to claim 11, where n is from 14-18.
Claim 14
Dependent Claim
20 words
A process for the treatment of a fibrous material, comprising treating the material with a composition according to claim 1.
Claim 15
Dependent Claim
18 words
A process according to claim 13, wherein the composition is admixed with one or more other polymeric materials.
Claim 16
Dependent Claim
23 words
A process according to claim 14, wherein the other polymeric material is a polyacrylate in the form of an emulsion, dispersion or latex.
Claim 17
Dependent Claim
12 words
A textile material whenever treated by a process according to claim 13.
References Cited (Backward Citations)
US2746988A
Cited
US2786734A
Cited
US2710816A
Cited
US2893898A
Cited
US3238010A
Cited
US3152920A
Cited
US3438940A
Cited
US3492081A
Cited
GB1131006A
Cited
US3491051A
Cited
FR1519859A
Cited
US3655437A
Cited
US3639157A
Cited
US3519478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |