[미국특허]
Method for producing vattable organic pigments
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09B-067/04
C09B-067/00
C09B-067/28
C08K-005/00
출원번호
US-0511857
(2003-03-17)
우선권정보
DE-102 16 681(2002-04-16)
국제출원번호
PCT/EP03/002730
(2003-03-17)
§371/§102 date
20041015
(20041015)
국제공개번호
WO03/087231
(2003-10-23)
발명자
/ 주소
Weber,Joachim
Urban,Manfred
Dietz,Erwin
출원인 / 주소
Clariant GmbH
인용정보
피인용 횟수 :
4인용 특허 :
16
초록▼
The invention relates to a method for producing vattable organic pigments. The invention is characterized in that an agueous or an aqueous-organic suspension of a coarse crystalline raw mineral is vatted and re-oxidised, and the pigment suspension is ground to a diameter equal to or less than 0.9 mm
The invention relates to a method for producing vattable organic pigments. The invention is characterized in that an agueous or an aqueous-organic suspension of a coarse crystalline raw mineral is vatted and re-oxidised, and the pigment suspension is ground to a diameter equal to or less than 0.9 mm during vatting and/or during oxidation by means of an agitator ball mill, which is operated at a power density of more than 1.0 KW per litre per grinding chamber and at an agitator peripheral speed of more than 12 m/s, using grinding bodies.
대표청구항▼
What is claimed is: 1. A method of producing a vattable organic pigment comprising the steps of vatting an aqueous or aqueous-organic suspension of a coarsely crystalline crude pigment and oxidizing the aqueous or aqueous-organic suspension of a coarsely crystalline crude pigment, wherein at least
What is claimed is: 1. A method of producing a vattable organic pigment comprising the steps of vatting an aqueous or aqueous-organic suspension of a coarsely crystalline crude pigment and oxidizing the aqueous or aqueous-organic suspension of a coarsely crystalline crude pigment, wherein at least one of the steps of vatting and oxidizing further comprises milling the aqueous or aqueous-organic suspension of a coarsely crystalline crude pigment with a stirred ball mill operated with a power density of more than 1.0 kW per liter of milling space and with a peripheral stirrer speed of more than 12 m/s, under the action of grinding media with a diameter of less than or equal to 0.9 mm. 2. The method as claimed in claim 1, wherein the coarsely crystalline pigment is selected from the group consisting of indanthrone, anthanthrone, thioindigo, perinone and perylene pigments. 3. The method as claimed in claim 1, wherein the coarsely crystalline pigment is C.I. Pigment Blue 60, 66, C.I. Pigment Red 88, 168, 123, 149, 178, 179, 181, 189, 194, C.I. Vat Red 14, 41, C.I. Pigment Orange 43, C.I. Pigment Violet 29, C.I. Pigment Black 31 or 32, a mixture thereof or a mixed crystal thereof. 4. The method as claimed in claim 1, wherein the vatting step occurs with sodium dithionite or potassium dithionite. 5. The method as claimed in claim 1, wherein the pigment concentration in the suspension is from 2.5% to 40% by weight, based on the total weight of the suspension. 6. The method as claimed in claim 1, wherein the milling duration is between 3 and 60 minutes. 7. The method as claimed in claim 1, wherein vatting, oxidation and milling are conducted at a temperature between 0 and 100째 C. 8. The method as claimed in claim 1, wherein the suspension comprises water or a mixture of C1-C6 alcohols, N-methylpyrrolidone, toluene and/or nitrobenzene with water. 9. The method as claimed in at claim 1, wherein at least one of the vatting and oxidizing steps further comprises adding at least one auxiliary selected from the group consisting of surfactants, pigmentary and nonpigmentary dispersants, fillers, standardizers, resins, waxes, defoamers, antidust agents, extenders, shading colorants, preservatives, drying retardants, rheology control additives, wetting agents, antioxidants, UV absorbers, light stabilizers and a combination thereof. 10. The method as claimed in claim 1, wherein milling occurs during at least the vatting step and wherein the compound formed during the vatting step is milled in the form of its salt or in the form of its acid. 11. A method of producing a vattable organic pigment comprising the steps of vatting an aqueous or aqueous-organic suspension of a coarsely crystalline crude pigment and oxidizing the aqueous or aqueous-organic suspension of a coarsely crystalline crude pigment, wherein the steps of vatting and oxidizing further comprises milling the aqueous or aqueous-organic suspension of a coarsely crystalline crude pigment with a stirred ball mill operated with a power density of more than 1.0 kW per liter of milling space and with a peripheral stirrer speed of more than 12 m/s, under the action of grinding media with a diameter of less than or equal to 0.9 mm.
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이 특허에 인용된 특허 (16)
Schmitt Philipp (Lampertheim DEX) Stehr Norbert (Grnstadt DEX), Agitator mill.
Spietschka Ernst (Idstein/Taunus DEX) Trster Helmut (Knigstein/Taunus DEX), Mix-crystal pigments based on perylenetetracarbimides, process for their preparation, and their use.
Hoch Helmut (Wachenheim DEX) Hahn Erwin (Heidelberg DEX) Hiller Heinrich (Wachenheim DEX), Preparation of brilliant, transparent pigmentary bromo-isoviolanthrone of high tinctorial strength.
Hoch Helmut (Wachenheim DEX) Hiller Heinrich (Wachenheim DEX), Preparation of transparent and easily dispersible perylene-3,4,9,10-tetracarboxylic acid diimide pigments of high tincto.
Hoch Helmut (Wachenheim DEX) Hahn Erwin (Heidelberg DEX) Hiller Heinrich (Wachenheim DEX), Preparation of transparent pigmentary forms of 4,4′,7,7′-tetrachlorothioindigo.
Hoch Helmut (Wachenheim DEX) Hiller Heinrich (Wachenheim DEX), Process for upgrading the color value of 3,4,9,10-tetracarboxylic acid N,N′-bis-methylimide.
Maratta, Gerard E.; Heubach, Rainer, Method for the production and use of pigmented thermoplastic material comprising a flow enhancer in the form of a dissolved salt.
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