专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

GB303454A Improvements in and relating to the production of benzanthrone derivatives 未知
公开(公告)号：GB303454A
公开(公告)日：1928-12-24
申请号：GB1689427
申请日：1927-06-24
申请人： IAN BLOHM ANDERSON , ROBERT FRASER THOMSON , JOHN THOMAS , SCOTTISH DYES LTD
IPC分类号： C09B3/22
摘要： 303,454. Anderson. I. B., Thomson, R. F., Thomas, J., and Scottish Dyes, Ltd. June 24, 1927. Isodibenzanthrone dyes. - Isodibenzanthrone and its derivatives are obtained from benzanthrone or its derivatives with free peripositions, or from 2 : 2 -dibenzanthronyl, bv heating with caustic potash and an alcohol, at temperatures not exceeding about 130‹ C., in the presence of a solvent or diluent selected from one of the following, viz., xylene, benzene, a halogenated aromatic hydrocarbon, e.g., monochlorbenzene, kerosene, or petrol. In examples, products are obtained by heating the following with ethyl alcohol, potash, and xylene, viz., benzanthrone, 6 (or 7-)-methylbenzanthrone, a chlorbenzanthrone obtained by condensing 1. chloranthraquinone with glycerine in sulphuric acid and separating the product into a highmelting chlorbenzanthrone and a lower melting mixture, the latter being the material used, the mixture of isomers obtained from 2-chloranthraquinone when freed from 2-chlorbenzanthrone, and 2 : 2 -dibenzanthronyl. The products, which may be purified by treating with aniline or other aromatic bases, pyridine, sulphuric acid, or hydrosulphite, dye cotton from the vat in blue shades, changing to violet on oxidation. Other alcohols, e.g. isopropyl alcohol, may be used instead of ethyl alcohol, and xylene may be replaced by one of the other solvents or diluents specified above. Reference has been directed by the Comptroller to Specification 247,261.

2. 发明专利

GB301403A Improvements in and relating to the production of dibenzanthrone 未知
公开(公告)号：GB301403A
公开(公告)日：1928-11-22
申请号：GB1951427
申请日：1927-07-22
申请人： IAN BLOHM ANDERSON , ROBERT FRASER THOMSON , JOHN THOMAS , SCOTTISH DYES LTD
IPC分类号： C09B3/26
摘要： 301,403. Anderson, I. B., Thomson, R. F., Thomas, J., and Scottish Dyes, Ltd. July 22, 1927. Dibenzanthrone is obtained by treating Bz 1: Bz 1 -dibenzanthronyl with caustic potash and an alcohol at temperatures between normal and about 130‹ C. in the presence of an indifferent solvent or diluent, such as kerosene, xylene or petrol. In examples, (1) Bz 1: Bz 1 -dibenzanthronyl, obtained by the oxidation of benzanthrone is sulphuric acid, is heated to 120‹ C. for 2 to 4 hours with ethyl or isopropyl alcohol and potash in the presence of xylem, the xylene is then removed by steam distillation and the melt is diluted with hot water, air-blown and filtered; other diluents, e.g. kerosene (boiling up to 200‹ C.) or halogenated aromatic hydrocarbons such as monochlorbenzene, may replace the xylene, and (2) Bz 1 : Bz 1 -dibenzanthronyl is treated with ethyl alcohol, potash and benzene for 12 hours at 80‹ C. or for longer periods, e.g. 48 hours, at ordinary temperature. almost complete conversion to the dibenzanthrone takes place, any unchanged d dibenzanthronyl being removed by extraction with solvents. Specification 251,313 is referred to.

3. 发明专利

GB367462A Improvements in and relating to the production and use of benzanthrone derivatives 未知
公开(公告)号：GB367462A
公开(公告)日：1932-02-25
申请号：GB2536930
申请日：1930-08-25
申请人： ROBERT FRASER THOMSON , IAN BLOHM ANDERSON , SIDNEY THORNLEY , ICI LTD
IPC分类号： C07C45/65 , C07C45/67
摘要： Benzanthrone derivatives containing selenium are made by the interaction of benzanthrone or its substitution products with selenium or a selenium compound. The products may be treated with acid or alkaline condensing agents, or nitrating (followed by reduction if desired), halogenating, sulphonating, or oxidizing agents, or they may be condensed with alkyl or aryl halides or subjected to heat treatment, further products being thereby obtained. In examples (1) benzanthrone is treated with selenium dioxide in sulphuric acid to give a product containing selenium; on alkali-fusion this gives a vat dye dyeing in blue shades; (2) Bz1 : Bz1 -dibenzanthronyl selenide is obtained by treating Bz1-chlorbenzanthrone (a) with selenium or selenium dioxide in tetrahydronaphthalene in presence of sodium acetate, or (b) with selenium and calcium hydroxide in methylated spirit, with or without a copper catalyst; other acid absorbers, e.g. quicklime, barium hydroxide, sodium phosphate or sodium acetate may be used instead of calcium hydroxide; (3) Bz1 : Bz1 -dibenzanthronyl selenide is treated with chlorine in nitrobenzene in presence of a trace of iodine; the product, according to one of the Provisional Specifications, is a mixture of benzanthrone and chlorbenzanthrone; (4) Bz1 : Bz1 -dibenzanthronyl selenide is brominated at room temperature; the product appears to be a dibromobenzanthrone; (5) Bz1 : Bz1 -dibenzanthronyl selenide on alkali-fusion, or on treatment with aluminium chloride in pyridine, yields isodibenzanthrone; (6) Bz1 : Bz1 -dibenzanthronyl selenide is oxidized with hydrogen peroxide in sulphuric acid; the product, on alkali-fusion, dyes in a similar shade to that given by isodibenzanthrone; (7) Bz1 : Bz1 -dibenzanthronyl selenide is nitrated in the presence or absence of sulphuric acid or in nitrobenzene; one of the products is a tetranitro derivative which, on alkali-fusion, gives a vat dye dyeing in grey shades; (8) Bz1 : Bz1 -dibenzanthronyl selenide is sulphonated; (9) Bz1-benzanthronyl hydrogen selenide is obtained by treating Bz1-chlorbenzanthrone with selenium and caustic soda in methylated spirit; on treatment with dimethyl sulphate or iodobenzene the corresponding methyl- and phenyl-selenides are obtained: the latter yields isodibenzanthrone on alkali-fusion; (10) Bz1 : Bz1 -dibenzanthronyl selenide is obtained from Bz1-benzanthronyl hydrogen selenide (a) by heating to 300 DEG C, (b) by heating with copper and nitrobenzene, (c) by heating with alcohol with addition of copper and lime, (d) by heating with selenious acid in nitrobenzene, or (e) by heating in sulphuric acid; (11) dichlorbenzanthrone (made by chlorinating Bz1-chlorbenzanthrone with sulphuryl chloride in nitrobenzene in presence of iodine) is treated with selenium to give a chlorinated dibenzanthronyl selenide, which, on alkali-fusion, gives a dye of the isodibenzanthrone type, and (12) nitro- and methoxy-Bz1-chlorbenzanthrones (examples (1) and (4) of Specification 256,281, [Class 2 (iii), Dyes &c.], on similar treatment yield amino-and methoxy-Bz1 : Bz1 -dibenzanthronyl selen ides, which also give dyes of the isodibenzanthrone type on alkali-fusion.

4. 发明专利

GB297366A Improvements in and relating to the production of dyestuff intermediates 未知
公开(公告)号：GB297366A
公开(公告)日：1928-09-18
申请号：GB758327
申请日：1927-03-18
申请人： IAN BLOHM ANDERSON , ROBERT FRASER THOMSON , JOHN THOMAS , SCOTTISH DYES LTD
IPC分类号： C07D231/54
摘要： 297,366. Anderson, I. B., Thomson, R. F., Thomas, J., and Scottish Dyes, Ltd. March 18, 1927. Pyrazoleanthrones are prepared by condensation of a-halogenanthraquinones with hydrazine or its salts in the presence of an oxide, hydroxide, or carbonate of an alkali or alkaline-earth metal, or an alkali salt of a weak volatile organic acid; the reagents may be employed in a dry state or in the presence of limited amounts of water; the process is effected at high temperatures and under pressure or not. Quicklime, calcium hydroxide, a paste of lime and water, sodium carbonate, calcium carbonate, sodium acetate, barium oxide, or strontium oxide, or mixtures thereof, are specified as alkaline reagents. When alkali salts of organic acids are used, the liberated organic acid may be allowed to escape or may be fixed by addition of a base. Examples are given of the preparation of pyrazoleanthrone and 2-methylpyrazoleanthrone from 1-chloranthraquinone and 1-chlor-2-methylanthraquinone respectively. Anthraquinone-alpha-hydrazines are obtained as intermediate products in the above process and may be isolated when a reduced quantity of alkaline-earth oxide is employed; an example is given of the preparation of 1-hydrazinoanthraquinone.

5. 发明专利

GB295213A Improvements in and relating to the production of benzanthrone derivatives 未知
公开(公告)号：GB295213A
公开(公告)日：1928-08-02
申请号：GB305027
申请日：1927-02-02
申请人： IAN BLOHM ANDERSON , ROBERT FRASER THOMSON , JOHN THOMAS , SCOTTISH DYES LTD
IPC分类号： C09B3/04
摘要： 295,213. Anderson, I. B., Thomson, R. F., Thomas, J., and Scottish Dyes, Ltd. Feb. 2, 1927. Benzanthrone derivatives are prepared by trearing 3-alkoxy or hydroxy-4: 4 -diamino 1: 1 -naphthylphenyl-2 -carboxylic acid with an alkali in aqueous solution. The starting material may also be substituted in the 2, 5, 6, 7, 3', 5 or 6 position by univalent groups such as alkyl, halogen or alkoxy. According to the examples, a mixture of 6-Bz1-diamino-Bz2-methoxybenezanthrone and 6-aminobenzanthrone-Bx1. Bz2.oxide is formed when 4 : 4 -diamino-3-methoxy-1 : 1 - naphthylphenyl-2 -carboxylic acid hydrochloride is dissolved in caustic soda solution and heated until no more methylamine, is evolved: similar treatment of 4: 4 -diamino-3-oxy-1 : 1 -naphthylphenyl-2 -carboxylic acid gives 6-Bz1-diamino- Bz2-oxybenzanthrone in the cold, and then on heating a mixture of this and 6-aminohenzanthrone-Bz1. Bz2-oxide by Joss of ammonia. 4 : 4 -Diamino-3-alkoxy or hydroxy-1: 1 -naphthylphenyl-2 -carboxylic acid is prepared by coupling #-naphthol with diazotized m-aminobenzoic acid, reducing the resulting azo compound in acid solution, and if necessary alkylating the product.

6. 发明专利

GB341389A Improvements in and relating to the production and use of benzanthrone derivatives 未知
公开(公告)号：GB341389A
公开(公告)日：1931-01-05
申请号：GB1840429
申请日：1929-07-05
申请人： IAN BLOHM ANDERSON , ROBERT FRASER THOMSON , JOHN THOMAS , SCOTTISH DYES LTD
IPC分类号： C09B3/26
摘要： Benzanthrone derivatives.-Amino-dibenzanthrones are obtained on subjecting nitrodibenzanthronyls to acid reduction; aminodibenzanthronyls may be formed as by-products. In examples (1) mono- and di-nitro-Bzl : Bzl1-dibenzanthronyls, obtained by nitration in sulphuric acid, are heated with aniline sulphate, aniline and zinc dust, the aniline may be replaced by bases, such as pyridine or quinoline, or by solvents, such as di- or tri-chlorbenzene, and the aniline sulphate by aniline hydrochloride, acetic acid or pyridine hydrochloride; the product from the dinitro derivative dyes cotton from the vat in reddish-violet shades, oxidized to dull green and changing in shade with acid to blueish-violet, and may be converted to another dyestuff, dyeing blue shades changing to green on oxidation, by diazotizing and boiling, and (2) nitro - 2 : 21 - dibenzanthronyl, obtained by nitrating in nitrobenzene, is heated with aniline hydrochloride, aniline and zinc dust ; the product dyes cotton blue shades oxidizing to blue green in the air, and converted to black by bleaching.

7. 发明专利

GB336268A Improvements in and relating to the production of dibenzanthrone derivatives 未知
公开(公告)号：GB336268A
公开(公告)日：1930-10-09
申请号：GB2007628
申请日：1929-05-09
申请人： IAN BLOHM ANDERSON , ROBERT FRASER THOMSON , JOHN THOMAS , SCOTTISH DYES LTD
IPC分类号： C09B3/26
摘要： 336,268. Andersen, I. B., Thomson, R. F., Thomas, J., and Scottish Dyes, Ltd. May 9, 1929. Benzanthrone derivatives. - Dibenzanthrone derivatives are made by alkali fusion of Bz1 : Bz1 -dibenzanthronyls substituted by phenoxy, nitro or simple amino groups, but having the 2- position free. In examples, (1) phenoxy-Bz1: Bz1 -dibenzanthronyl (obtained by chlorinating the dibenzanthronyl with sulphuryl chloride and treating the product with phenol and caustic potash) is heated with caustic potash, alcohol and xylene; the product dyes cotton in reddish-blue shades from the vat; (2) mononitro-Bz1 :Bz1 -dibenzanthronyl (obtained by nitrating the dibenzanthronyl with a mixture of nitric and sulphuric acids) is heated with caustic potash, xylene and methyl alcohol; the product dyes cotton in reddish-blue shades, becoming greenish-blue on oxidation; methylation gives a faster product dyeing in reddish-blue shades; (3) dinitro-Bz1 : Bz1 -dibenzanthronyl when similarly treated yields a product dyeing in greenish-black to greenish-grey shades; and (4) monoamino-Bz1 : Bz1 -dibenzanthronyl (obtained by reducing the mononitro body of Example 2) is fused with alcoholic potash; the product dyes in bluish-red shades.

8. 发明专利

GB378942A Improvements in and relating to the production of dibenzanthrone derivatives 未知
公开(公告)号：GB378942A
公开(公告)日：1932-08-19
申请号：GB1481631
申请日：1931-05-19
申请人： ICI LTD , IAN BLOHM ANDERSON , PETER GEORGE CARTER , ROBERT FRASER THOMSON
IPC分类号： C09B3/30
摘要： Dibenzanthrone derivatives.--Blue and reddish-blue dyestuffs are obtained by treating a diacyl derivative of Bz2.Bz2 -dihydroxydibenzanthrone obtained by acylating according to Specification 193,431, [Class 2 (iii), Dyes &c.], or a dialkyl derivative of Bz2.Bz2 -dihydroxydibenzanthrone obtained by alkylating according to examples A and B (jointly) of Specification 181,304, (the Bz2: Bz2 -dihydroxydibenzanthnone obtained according to example 13 of Specification 203,533, [Class 2 (iii), Dyes &c.], being the parent material in each case), with an aliphatic aldehyde, or a p substance yielding such an aldehyde, in a sulphuric acid medium. Formaldehyde or paraformaldehyde is preferably employed in concentrated sulphuric acid, and in the case of the diacyl derivatives the acyl groups appear to be split off with formation of the methylene ethers. Similar alkylidene ethers appear to be formed when higher aldehydes are employed, and also when the dialkyl deriva ives are treated. In the latter case the dimethyl derivative is preferably employed, for example in the pure form of Caledon Jade Green. In examples: (1) Bz2 : Bz2 -diacetoxydibenzanthrone (prepared according to example 3 of Specification 193,431 from the Bz2 : Bz2 -dihydroxydibenzanthrone prepared according to example 13 of Specification 203,533) is treated with paraformaldehyde in sulphuric acid; cotton is dyed bright blue shades by the product: (2) Bz2 : Bz2 -dihydroxydibenzanthrone dibenzoate (prepared according to example 2 of Specification 193,431 from the Bz2 : Bz2 -dihydroxydibenzanthrone prepared according to example 13 of Specification 203,533) is treated as in (1) to give a similar product: (3) Bz2 : Bz2 -dimethoxydibenzanthrone (prepared according to example B of Specification 181,304, [Class 2 (iii), Dyes &c.], from the dihydroxydibenzanthrone obtained according to example 13 of Specification 203,533) is treated with paraformaldehyde in concentrated sulphuric acid to give a product dyeing reddish-blue shades; by replacing paraformaldehyde by paracetaldehyde a similar dyestuff is obtained. Specification 206,638, [Class 2 (iii), Dyes &c.], also is referred to.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式