US4172057A
Expired / Lapsed
US
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Amino-resin compositions
Assignee: Imperial Chemical Industries Ltd
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Filing: 1978-05-02
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Granted: 1979-10-23
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Expires: 1998-05-02
Abstract
Abstract An amino-resin composition, in particular urea formaldehyde and/or melamine formaldehyde, in the form of fibres, having incorporated therein at least one additional compound which contains at least one aldehyde or ketone group and at least one hydroxyl group bonded to a carbon atom.
Inventors
- 👤 Richard G. C. Henbest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:40
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/88; D01F6/94; C; C08; C08L; C08L61/00; C08L61/20; D21; D21H; D21H5/00; D21H5/12; D21H5/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
An amino-resin composition in the form of fibres comprising an amino-resin selected from the group consisting of urea-formaldehyde resins, melamineformaldehyde resins and mixtures thereof, having a molar ratio of formaldehyde: amino groups in the range 0.5:1 to 1.5:1 having incorporated therein from 5% to 30%, by weight based on the weight of the total solids in the composition, of at least one added compound which contains at least one group selected from the group consisting of aldehyde and ketone groups and at least one hydroxyl group bonded to a carbon atom.
Claim 2
Dependent Claim
91 words
An amino-resin composition in the form of fibres comprising an amino-resin selected from the group consisting of urea-formaldehyde resins, melamineformaldehyde resins and mixtures thereof, having a molar ratio of formaldehyde: amino groups in the range 0.5:1 to 1.5:1 having incorporated therein from 5% to 30%, by weight based on the weight of the total solids in the composition, of at least one added compound which contains at least one group selected from the group consisting of aldehyde and ketone groups and at least one hydroxyl group bonded to a carbon atom.
Claim 3
Dependent Claim
19 words
An amino-resin composition as claimed in claim 1, wherein the said ratio is in the range 0.6:1 and 1.2:1.
Claim 4
Dependent Claim
35 words
An amino-resin compostion in the form of fibres as claimed in claim 1, wherein said at least one added compound is selected from the group consisting of carbohydrates, modified carbohydrates, carbohydrate isomers and mixtures thereof.
Claim 5
Dependent Claim
39 words
An amino-resin composition in the form of fibres as claimed in claim 1, wherein said at least one added compound is selected from the group consisting of glycolaldehyde, glyceraldehyde, dihydroxyacetone, tetroses, pentoses, hexoses, disaccharides, polysaccharides, oligosaccharides, and mixtures thereof.
Claim 6
Dependent Claim
19 words
An amino-resin composition in the form of fibres as claimed in claim 1, wherein the added compound is formose.
Claim 7
Dependent Claim
34 words
An amino-resin composition in the form of fibres as claimed in claim 1, wherein said at least one added compound is selected from the group consisting of glucose, fructose, maltose, malto-dextrin, and mixtures thereof.
Claim 8
Dependent Claim
8 words
Paper containing fibres as claimed in claim 1.
References Cited (Backward Citations)
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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) | 1982-10-22 | 1983-04-23 | 1983-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-22 | 1987-04-23 | 1987-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-22 | 1991-04-23 | 1991-10-23 | $7700.00 | Window Closed / Lapsed |