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US3773464A Expired / Lapsed US ⏱️ 0.0 years remaining

Acid and direct dyes and fluorescent brightener concentrates with thiocyanates and acetylinic alcohol

Assignee: GAF Corp
•
Filing: 1970-06-02
•
Granted: 1973-11-20
•
Expires: 1990-06-02
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Abstract

Abstract Pourable, stable aqueous solutions to pastes consisting essentially of about 5-50% by weight of an acid dyestuff, a direct dyestuff or a flourescent brightening agent containing at least 1 sulfonic acid substituent and about 1-20% by weight of a water soluble thiocyanate such as ammonium thiocyanate. Such compositions are characterized by greater stability and fluidity and increased color value, as compared with a solution or paste, of the same concentration, of such dyestuffs but which do not contain a water soluble thiocyanate. The incorporation of a small amount, about 0.1-2% by weight, of an acetylenic glycol into such compositions, in the case of many dyestuffs further enhances the stability, fluidity and/or color value of the composition.

Inventors

  • 👤 C Streck

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 19:31
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65118; D06P1/673; D06P1/67333; D06P1/6735; D06P1/67375; D21; D21H; D21H21/00; D21H21/14; D21H21/28; D21H21/30

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 18 words
A stable, pourable aqueous dye paste as defined in claim 1, wherein the dyestuff is an acid dye.
Claim 2
Dependent Claim 19 words
A stable, pourable aqueous dye paste as defined in claim 2 wherein the water soluble thiocyanate is ammonium thiocyanate.
Claim 3
Dependent Claim 57 words
A stable, pourable aqueous dye paste as defined in claim 2 wherein the acid dye is selected from the group consisting of, Colour Index, Direct Yellow 12, Acid Orange 7 and 8, Acid Yellow 36, Acid Blue 22, 25, 27, 40, 41, 45, 67, 69 and 78, Acid Violet 17, Acid Green 25 and Acid Red 80.
Claim 4
Dependent Claim 19 words
A stable, pourable aqueous dye paste as defined in claim 4, wherein the water soluble thiocyanate is ammonium thiocyanate.
Claim 5
Dependent Claim 18 words
A stable, pourable aqueous dye paste as defined in claim 1, wherein the dyestuff is a direct dye.
Claim 6
Dependent Claim 19 words
A stable, pourable aqueous dye paste as defined in claim 6, wherein the water soluble thiocyanate is ammonium thiocyanate.
Claim 7
Dependent Claim 20 words
A stable, pourable aqueous dye paste as defined in claim 6, wherein the direct dye specified is a paper dye.
Claim 8
Dependent Claim 19 words
A stable, pourable aqueous dye paste as defined in claim 7, wherein the water soluble thiocyanate is ammonium thiocyanate.
Claim 9
Dependent Claim 26 words
A stable, pourable aqueous dye paste as defined in claim 1, wherein the dyestuff is a fluorescent brightening agent having at least one sulfonic acid substituent.
Claim 10
Dependent Claim 19 words
A stable, pourable aqueous dye paste as defined in claim 10, wherein the water soluble thiocyanate is ammonium thiocyanate.
Claim 11
Dependent Claim 31 words
A stable, pourable aqueous dye paste as defined in claim 1 wherein R and R'' may be a radical selected from the group consisting of C1-8 alkyl, cyclo alkyl and aryl.

References Cited (Backward Citations)

US2518644A Cited
US2552807A Cited
US2997447A Cited
US3158434A Cited
US3201189A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-11-19 1977-05-21 1977-11-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-19 1981-05-21 1981-11-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-19 1985-05-21 1985-11-20 $7700.00 Window Closed / Lapsed

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