US3989458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 17:56
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.
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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 |