US 4,312,985 AGrant
Disperse Dyes From Heterocyclic Acetonitriles
Issue Date:1982-01-26
•5 Claims
Abstract
Disclosed are disperse dyes for the dyeing of synthetic fibers such as cellulose acetate, triacetate, polyamide, and especially polyester and its blends, which have the general formula ##STR1## in which R.sub.1 is selected from hydrogen, aryl, cyclohexyl, lower alkyl and lower alkyl substituted by Cl, CN, OC.sub.2 H.sub.4 OC.sub.2 H.sub.5, ##STR2## lower alkoxy, aryl, NHCONHPh, OCONHPh, phthalimido, succinimido, or aryloxy, which aryloxy may be substituted by one or more of Cl, Br, NO.sub.2, CN, lower alkyl, lower alkoxy, aryl and aryloxy; R.sub.2 is phenyl or phenyl substituted with 1-3 of lower alkyl, lower alkoxy, ##STR3## --CN, --Cl or --NO.sub.2 ; R.sub.3 is H, Cl, lower alkyl or lower alkoxy; R.sub.1 and R.sub.3 may form a 5 or 6 membered ring preferably substituted by 1-3 methyl groups; R.sub.4 is H, Cl, lower alkyl or lower alkoxy; R.sub.5 is selected from 3-pyridyl, 3-benzisothiazolyl, 2-benzothiazolyl, 2-benzoxazolyl, 2-quinoxalyl, 2-quinazolinonyl, 2-1,3,4-oxadiazolyl, 2-1,3,4-thiadiazolyl and 2-thienyl, which R.sub.5 heterocycles may be substituted by Cl, Br, NO.sub.2, CN, aryl, aryl substituted by Cl, Br, NO.sub.2 or CN, lower alkyl or COOR.sub.6 wherein R.sub.6 is lower alkyl or aryl; and n is 1-4.
Metadata
Assignee
- Eastman Kodak Company
Inventor
- Keith Hunt
Application Information
Application Number:US 1827324
Filing Date:1980-08-29
Priority Date:1980-05-16
Art Unit:117
Classifications
IPC:
C07D27764C07D26354
Field of Search:
542182;520;429;454;457;430;431;435;455;458
Patent Drawings
This patent does not have any drawings.
Description
This invention concerns novel heterocyclic methine dyes prepared for example from heterocyclc acetonitriles and formylated compounds, and their use in dyeing synthetic fibers such as polyester and cellulosics. These dyes give deep yellow or orange to neutral yellow shades of excellent fastness properties and dyeability.
The dyes have the formula ##STR4## in which R.sub.1 is selected from hydrogen, aryl, cyclohexyl, lower alkyl and lower alkyl substituted by Cl, CN, OC.sub.2 H.sub.4 OC.sub.2 H.sub.5, ##STR5## lower alkoxy, aryl, NHCONHPh, OCONHPh, phthalimido, succinimido, or aryloxy, which aryloxy may be substituted by one or more of Cl, Br, NO.sub.2, CN, lower alkyl, lower alkoxy, aryl and aryloxy; R.sub.2 is phenyl or phenyl substituted with 1-3 of lower alkyl, lower alkoxy, ##STR6## --CN, --Cl or --NO.sub.2 ; R.sub.3 is H, Cl, lower alkyl or lower alkoxy; R.sub.1 and R.sub.3 may form a 5 or 6 membered ring preferably substituted by 1-3 methyl groups; R.sub.4 is H, Cl, lower alkyl or lower alkoxy; R.sub.5 is selected from 3-pyridyl, 3-benzisothiazolyl, 2-benzothiazolyl, 2-benzoxazolyl, 2-quinoxalyl, 2-quinazolinonyl, 2-1,3,4-oxadiazolyl, 2-1,3,4-thiadiazolyl and 2-thienyl, which heterocycles may be substituted by Cl, Br, NO.sub.2, CN, aryl, aryl substituted by Cl, Br, NO.sub.2 or CN, lower alkyl or COOR.sub.6 wherein R.sub.6 is lower alkyl or aryl. The term "lower" as used herein means 1-6 carbons.
The present dyes have outstanding pH stability, color strength, fastness and dyeing properties, for the conventional dyeing of polyester fiber and its blends, and other synthetic fibers e.g. cellulose acetate, triacetate, and the like. The dyes also have good pH stability in the dyebath, good sublimation and lightfastness properties, and show little or no variation in shade or strength when dyed at 110.degree. and 130.degree. on polyester. The dyes also have improved color strength when compared with other commonly used dyes e.g. C. I. Disperse Yellow 54. Methine dyes which have found value in the dyeing of polyester are generally greenish yellow in shade, but the methine dyes of this invention are normally orange to neutral yellow in shade.
The dyeing of the fiber material mentioned with the dyestuffs according to the invention is appropriately carried out from an aqueous suspension in the presence of carriers at between 80.degree. and 110.degree. C., in the absence of carriers at between 100.degree.-130.degree. C., or using the so-called thermofixing process at 180.degree.-230.degree. C. The printing of the materials can be carried out by steaming the goods, printed with the new dyestuffs, in the presence of a carrier at temperatures between 80.degree. C. and 110.degree. C. or also in the absence of a carrier at 110.degree.-140.degree. C., or also by treating the goods, printed with the new dyestuffs, according to the so-called thermofixing process at 180.degree.-230.degree. C.
This invention will be further illustrated by the following example although it will be understood that this example is included merely for purposes of illustration and is not intended to limit the scope of the invention.
Example 1
4-Formyl-N-ethyl-N-(.beta.-4-methoxy phenoxy ethyl)-3-methylaniline (1.565 g, 0.005 mole) was dissolved in ethyl alcohol (40 ml). To this was added 2-benzothiazoleacetonitrile (0.85 g, 0.005 mole) and piperidine (0.1 ml) and the mixture was warmed on a steam bath for 15 minutes, then left to cool overnight. The orange crystalline product was collected by filtration and air dried. The dye was ball milled in the presence of a lignin sulphonate dispersing agent for 24 hours and the resulting dispersion was applied to polyester fiber by dyeing at 130.degree. for 1 hour. It gave a deep yellow dyeing of excellent color strength and fastness. Similar dyeings prepared in dyebaths buhfered from pH 4-8 also gave high strength dyeings indicating the dye had excellent pH stability.
By application of the synthetic procedures outlined in Example 1, the following dyes of the general formula shown where n is 2, were prepared. When applied by a procedure similar to the above they gave high strength dyeings on polyester fiber.
Also, the dyes of the formula below are prepared by procedures similar to Example 1 ##STR75##
The invention has been described in detail with particular reference to preferred embodiments thereof, but it will be understood that variations and modifications can be effected within the spirit and scope of the invention.
Claims
I claim:
1. A compound of the formula ##STR164## in which R.sub.1 is selected from hydrogen, aryl cyclohexyl, lower alkyl and lower alkyl substituted with Cl, CN, OC.sub.2 H.sub.4 OC.sub.2 H.sub.5, ##STR165## lower alkoxy, aryl, NHCONHPh, OCONHPh, phthalimido, succinimido, aryloxy and aryloxy substituted with one or more of Cl, Br, NO.sub.2, CN, lower alkyl, lower alkoxy, aryl and aryloxy; R.sub.2 is phenyl or phenyl substituted with 1-3 of lower alkyl, lower alkoxy, ##STR166## --CN, --Cl or --NO.sub.2 ; R.sub.3 is H, Cl, lower alkyl or lower alkoxy; R.sub.1 and R.sub.3 combined form --CH.sub.2 CH.sub.2 CH.sub.2 -- unsubstituted or substituted with 1-3 methyl groups; R.sub.4 is H, Cl, lower alkyl or lower alkoxy; R.sub.5 is selected from 3-pyridyl, 3-benzisothiazolyl, 2-benzothiazolyl, 2-benzoxazolyl, 2-quinoxalyl, 2-quinazolinonyl, 2-1,3,4-oxadiazolyl, 2-1,3,4-thiadiazolyl and 2-thienyl, which R.sub.5 heterocycles are unsubstituted or substituted with Cl, Br, NO.sub.2, CN, aryl, aryl substituted with Cl, Br, NO.sub.2 or CN, lower alkyl, or COOR.sub.6 wherein R.sub.6 is lower alkyl or aryl; and n is 1-4.
2. A compound according to claim 1 having the formula ##STR167##
3. A compound according to claim 1 having the formula ##STR168##
4. A compound according to claim 1 having the formula ##STR169##
5. A compound according to claim 1 havng the formula ##STR170##