Claims
- 1. A process for colouring linear polyester in the melt in navy blue and dark blue shades, which process comprises using, as colourant, a mixture consisting of 0.2 to 1% by weight of finely dispersed, undissolved perylenetetracarboxylic acid bis-methylimide, based on the amount of polyester, and a blue polymer-soluble colourant.
- 2. A process according to claim 1, wherein the polymer-soluble colourant is a phthalocyanine derivative.
- 3. A process according to claim 2, wherein the polymer-soluble colourant is an alkylamide or alkoxyalkylamide of copper phthalocyanine-tri- or -tetrasulfonic acid.
- 4. A process according to claim 1, wherein the polymer-soluble colourant is an anthraquinone dye.
- 5. A process according to claim 4, wherein the polymer-soluble colourant is an aminoanthraquinone, alkylaminoanthraquinone, cyclohexylaminoanthraquinone, hydroxyalkylaminoanthraquinone, alkoxyalkylaminoanthraquinone or phenylaminoanthraquinone, each of which can additionally contain, as further auxochromic groups, hydroxyl, phenylmercapto or benzoylamino groups.
- 6. Linear polyester containing 0.2 to 1% by weight of finely dispersed, undissolved perylenetetracarboxylic acid bis-methylimide and a blue polymer-soluble colourant.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5624/79 |
Jun 1979 |
CHX |
|
Parent Case Info
This is a continuation of application Ser. No. 338,710, filed on Jan. 11, 1982, now abandoned, which in turn is a continuation of application Ser. No. 156,243, filed on June 4, 1980, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (2)
Number |
Date |
Country |
1198372 |
Jul 1970 |
GBX |
1370433 |
Oct 1974 |
GBX |
Continuations (2)
|
Number |
Date |
Country |
Parent |
338710 |
Jan 1982 |
|
Parent |
156243 |
Jun 1980 |
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