GB348269A - - Google Patents
Info
- Publication number
- GB348269A GB348269A GB7378/30A GB737830A GB348269A GB 348269 A GB348269 A GB 348269A GB 7378/30 A GB7378/30 A GB 7378/30A GB 737830 A GB737830 A GB 737830A GB 348269 A GB348269 A GB 348269A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grounding
- dyeing
- ammonia
- oxynaphthoic acid
- glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Coloring (AREA)
Abstract
Cellulose esters or ethers, dyeing; azo dyes, forming on the material.-Insoluble azo dyes are formed on artificial silk made from cellulose esters or ethers by impregnating the material with an arylide of 2 : 3-oxynaphthoic acid in an alkaline bath containing an organic solvent, miscible with water, which is a solvent or swelling agent for the materials and is also capable of dissolving the arylides or their alkali salts, and developing with a diazo compound, Specified solvents are pyridine, alcohol, acetone, and ketonic alcohols such as diacetone alcohol. To avoid saponification of cellulose esters the content of alkali in the grounding liquor should be as small as possible; part of the strong alkali may therefore be replaced by ammonia. Protective colloids such as glue may be present in the grounding bath. The following examples are specified: (1) Acetate silk is dyed an intense blue by impregnation with an aqueous grounding liquor, containing the 21-toluidide of 2 : 3-oxynaphthoic acid, pyridine, caustic soda, turkey red oil, ammonia, and glue, and development with diazotized 4-amino-41-methoxydiphenylamine. (2) Acetate silk is dyed a brilliant orange by impregnation with an aqueous grounding liquor containing the anilide of 2 : 3-oxynaphthoic acid, alcohol, caustic soda, turkey red oil, ammonia, and glue, and development with diazotized 3-chloraniline. (3) Acetate silk is dyed a reddish blue by impregnation with an aqueous grounding liquor containing the 21-anisidide of 2 : 3-oxynaphthoic acid, diacetone alcohol, caustic soda, turkey red oil, ammonia, and glue, and development with diazotized 4-amino-41-methoxy-diphenylamine. Specification 17272/14, [Class 15 (ii), Dyeing, Processes &c. for], is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a reference to the use in the grounding bath of the free arylide of 2 : 3-oxynaphthoic acid in the enol form. This subject-matter does not appear in the Specification as accepted. Specifications 195,619, [Class 15 (ii), Dyeing, Processes &c. for], 224,502, [Class 2 (ii), Cellulose &c.], and 241,854, [Class 15 (ii), Dyeing, Processes &c. for], also are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE348269T | 1929-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB348269A true GB348269A (en) | 1931-05-14 |
Family
ID=31895222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7378/30A Expired GB348269A (en) | 1929-03-06 | 1930-03-06 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB348269A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2649353A (en) * | 1953-08-18 | Dyeing of nylon and acetate silk in |
-
1930
- 1930-03-06 GB GB7378/30A patent/GB348269A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2649353A (en) * | 1953-08-18 | Dyeing of nylon and acetate silk in |
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