US4397652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of negligibly dusty preparations of dyes and optical brighteners
Assignee: Novartis Corp
•
Filing: 1982-01-18
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Granted: 1983-08-09
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Expires: 2002-01-18
Abstract
Abstract Described is a process for the production of negligibly dusty preparations of dyes and/or optical brighteners, which process comprises mixing an adhesive as e.g. sorbitol and a dust binding surface active agent into a mixture of dye or optical brightener and, optionally, further additives.
Inventors
- 👤 Konrad Neumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:15
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0092; D; D06; D06L; D06L4/00; D06L4/60; D06L4/664
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
105 words
Process for the production of negligibly dusty pulverulent preparations of dyes, optical brighteners or mixtures thereof, which process comprises mixing an adhesive selected from the group consisting of sorbitol, hydrated dextrose, glucose, lactose, neopentyl glycol, mannitol, mannose and polyethylene glycol having a molecular weight of above 3000 and a dust-binding agent, selected from the group consisting of fatty acid ethanolamides, fatty acid amides, polyethylene glycols with a molecular weight of 200 to 1,000, condensation products from fatty acids, aliphatic alcohols, phenol or alkyl phenols with ethylene oxide, and copolymers of ethylene oxide and propylene oxide, into a preparation of dye, optical brightener or mixtures thereof.
Claim 2
Dependent Claim
105 words
Process for the production of negligibly dusty pulverulent preparations of dyes, optical brighteners or mixtures thereof, which process comprises mixing an adhesive selected from the group consisting of sorbitol, hydrated dextrose, glucose, lactose, neopentyl glycol, mannitol, mannose and polyethylene glycol having a molecular weight of above 3000 and a dust-binding agent, selected from the group consisting of fatty acid ethanolamides, fatty acid amides, polyethylene glycols with a molecular weight of 200 to 1,000, condensation products from fatty acids, aliphatic alcohols, phenol or alkyl phenols with ethylene oxide, and copolymers of ethylene oxide and propylene oxide, into a preparation of dye, optical brightener or mixtures thereof.
Claim 3
Dependent Claim
32 words
Process according to claim 1, wherein an adhesive, with or without a diluting agent, is placed into a mixer, and the dye or optical brightener and the dust-binding agent are then added.
Claim 4
Dependent Claim
23 words
Process according to claim 1, wherein the homogeneous mixing together of the components is performed at room temperature within 5 to 20 minutes.
Claim 5
Dependent Claim
30 words
Process according to claim 1, wherein the product in which the dust is bound is obtained by mixing together the components at a product temperature of 30° to 80° C.
Claim 6
Dependent Claim
14 words
Process according to claim 1, wherein a water-soluble dye or optical brightener is used.
Claim 7
Dependent Claim
11 words
Process according to claim 5, wherein a cationic dye is used.
Claim 8
Dependent Claim
24 words
Process according to claim 1, wherein the adhesive is used in amounts of 2 to 10 percent by weight, relative to the total mixture.
Claim 9
Dependent Claim
27 words
Process according to claim 1, wherein the adhesive used is an organic compound having a softening or melting point in the range of 30° to 150° C.
Claim 10
Dependent Claim
20 words
Process according to claim 1, wherein the dust-binding agent used is a condensation product from an alkylphenol and ethylene oxide.
Claim 11
Dependent Claim
24 words
Process according to claim 1, wherein the dust-binding agent is used in amounts of 1 to 10% by weight, relative to the total mixture.
Claim 12
Dependent Claim
22 words
Process according to claim 1, wherein further additives used are salts, acids, extenders, wetting agents, dispersing agents or diluents, or mixtures thereof.
Claim 13
Dependent Claim
15 words
Process according to claim 11, wherein further additives used are diluents, salts or mixtures thereof.
Claim 14
Dependent Claim
30 words
Process according to claim 1, wherein sorbitol, neopentyl glycol or hydrated dextrose, with or without further additive, is mixed at room temperature with a cationic dye and a polyether alcohol.
Claim 15
Dependent Claim
10 words
The preparations obtained by the process according to claim 1.
Claim 16
Dependent Claim
24 words
Process according to claim 1, wherein the adhesive is used in amounts of 3 to 5 percent by weight, relative to the total mixture.
References Cited (Backward Citations)
GB1425237A
Cited
US4295851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |