GB1334706A - Dyestuffs manufacturing process - Google Patents
Dyestuffs manufacturing processInfo
- Publication number
- GB1334706A GB1334706A GB1334706DA GB1334706A GB 1334706 A GB1334706 A GB 1334706A GB 1334706D A GB1334706D A GB 1334706DA GB 1334706 A GB1334706 A GB 1334706A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anthraquinone
- dyestuffs
- mixtures
- water
- diamino
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/50—Amino-hydroxy-anthraquinones; Ethers and esters thereof
- C09B1/51—N-substituted amino-hydroxy anthraquinone
- C09B1/515—N-alkyl, N-aralkyl or N-cycloalkyl derivatives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/50—Amino-hydroxy-anthraquinones; Ethers and esters thereof
- C09B1/503—Amino-hydroxy-anthraquinones; Ethers and esters thereof unsubstituted amino-hydroxy anthraquinone
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0033—Blends of pigments; Mixtured crystals; Solid solutions
- C09B67/0034—Mixtures of two or more pigments or dyes of the same type
- C09B67/0038—Mixtures of anthraquinones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Abstract
1334706 N-methylation of diamino-dihydroxyanthraquinones IMPERIAL CHEMICAL INDUSTRIES Ltd 8 July 1971 [3 Aug 1970] 37312/70 Heading C4P The invention comprises a process for the preparation of mixtures of disperse anthraquinone dyestuffs comprising a dyestuff of the formula and at least one of the dyestuffs represented by the formulµ wherein R is H or C 1 -C 4 alkyl, one of X<SP>1</SP> and X<SP>2</SP> is H and the other is methyl, and Y and Z are each H; C 1 -C 4 alkyl or Cl which comprises reacting an anthraquinone compound of the second formula above wherein Y, Z and R are as above in water or in a water-miscible organic liquid optionally containing water with 1 to 20 moles of formaldehyde per mole of anthraquinone compound at a temperature between 20‹ C. and the boiling point of the reaction medium. The reaction preferably takes place at pH 0À5 to 4À0. The preferred dyestuff mixtures obtained contain 45 to 60% by weight of 1,5 - dihydroxy - 4,8 - diamino - 2 - (41- hydroxyphenyl) - anthraquinone and 35 to 45% of a mono-N-methyl derivative thereof. The starting materials may be obtained by desulphonation of corresponding anthraquinone sulphonic acids using zinc dust in an aq. alkaline solution. The starting material may be used without separation from the reaction medium and the product mixture of disperse dyes may contain some residual sulphonic acid groups. The dye mixtures dye cellulose mono- and triacetates, polyamides, and polyesters in greenishblue shades.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3731270 | 1970-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1334706A true GB1334706A (en) | 1973-10-24 |
Family
ID=10395485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1334706D Expired GB1334706A (en) | 1970-08-03 | 1971-07-08 | Dyestuffs manufacturing process |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH566363A5 (en) |
| DE (1) | DE2138866A1 (en) |
| FR (1) | FR2103874A5 (en) |
| GB (1) | GB1334706A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4456545A (en) * | 1980-10-24 | 1984-06-26 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Dichroitic anthraquinone dyestuffs useful in liquid crystalline dielectrics and electro-optical indicator elements |
| CN107698442A (en) * | 2016-08-09 | 2018-02-16 | 常州高新技术产业开发区三维工业技术研究所有限公司 | A kind of synthesis technique of Rhein |
-
1971
- 1971-07-08 GB GB1334706D patent/GB1334706A/en not_active Expired
- 1971-08-02 FR FR7128292A patent/FR2103874A5/fr not_active Expired
- 1971-08-02 CH CH1135571A patent/CH566363A5/xx not_active IP Right Cessation
- 1971-08-03 DE DE19712138866 patent/DE2138866A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4456545A (en) * | 1980-10-24 | 1984-06-26 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Dichroitic anthraquinone dyestuffs useful in liquid crystalline dielectrics and electro-optical indicator elements |
| CN107698442A (en) * | 2016-08-09 | 2018-02-16 | 常州高新技术产业开发区三维工业技术研究所有限公司 | A kind of synthesis technique of Rhein |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2103874A5 (en) | 1972-04-14 |
| DE2138866A1 (en) | 1972-02-10 |
| CH566363A5 (en) | 1975-09-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |