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US4986852A Expired / Lapsed US ⏱️ 0.0 years remaining

Pigments and use thereof

Assignee: Clariant Produkte Deutschland GmbH
•
Filing: 1988-12-20
•
Granted: 1991-01-22
•
Expires: 2008-12-20
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Abstract

Abstract Pigments of the formula I ##STR1## where A is a five- or six-membered aromatic fused or unfused heterocycle which contains one to three hetero atoms from the series consisting of nitrogen and/or oxygen and/or sulfur and which is bonded to the methylene group via a carbon atom, R 1 and R 2 are each hydrogen, alkyl C 1 -C 4 , alkylene C 2 or aryl, and together R 1 and R 2 may also be an aliphatic or aromatic ring, R 3 is hydrogen, alkyl C 1 -C 4 hydroxylkyl C 1 -C 3 or alkylene C 2 , P is the radical of a polycyclic pigment or a radical of a mix-crystal of polycyclic pigments, and n is a number from 0.0001 to 0.2, are useful for pigmenting high molecular weight materials in the form of plastic materials, melts, spinning solutions, surface coatings, paints, printing inks, baking finishes of the class of the alkyd melamine resin or acrylic melamine resin finishes, two-component coatings based on polyisocyanate-crosslinkable acrylic resins and printing inks based on nitrocellulose.

Inventors

  • 👤 Erwin Dietz
  • 👤 Gustav Kapaun
  • 👤 Michael Kappert
  • 👤 Frank Prokschy
  • 👤 Adolf Kroh
  • 👤 Manfred Urban

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 12:44
CPC Classifications
C; C09; C09B; C09B69/00; C09B19/00; C09B19/02; C09B47/00; C09B47/04; C09B47/08; C09B47/12; C09B5/00; C09B5/62

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 137 words
A pigment of the general formula I ##STR25## where A is a five- or six-membered aromatic fused or unfused heterocycle which contains one to three hetero atoms selected from the group consisting of nitrogen, oxygen, sulfur and combinations thereof and which is bonded to the methylene group via a carbon atom, R 1 and R 2 are each hydrogen, alkyl C 1 -C 4 , alkylene C 2 or aryl, and together R 1 and R 2 may also be an aliphatic or aromatic ring, R 3 is hydrogen, alkyl C 1 -C 4 , hydroxyalkyl C 1 -C 3 , or alkylene C 2 with alkyl being linear or branched, P is the radical of a polycyclic pigment, or a radical of a mix-crystal of polycyclic pigments and n is a number from 0.001 to 0.2.
Claim 2
Dependent Claim 137 words
A pigment of the general formula I ##STR25## where A is a five- or six-membered aromatic fused or unfused heterocycle which contains one to three hetero atoms selected from the group consisting of nitrogen, oxygen, sulfur and combinations thereof and which is bonded to the methylene group via a carbon atom, R 1 and R 2 are each hydrogen, alkyl C 1 -C 4 , alkylene C 2 or aryl, and together R 1 and R 2 may also be an aliphatic or aromatic ring, R 3 is hydrogen, alkyl C 1 -C 4 , hydroxyalkyl C 1 -C 3 , or alkylene C 2 with alkyl being linear or branched, P is the radical of a polycyclic pigment, or a radical of a mix-crystal of polycyclic pigments and n is a number from 0.001 to 0.2.
Claim 3
Dependent Claim 47 words
A pigment of the formula (I) as set forth in claim 1, wherein P is an anthraquinone, anthrapyrimidine, anthanthrone, quinacridone, quinophthalone, diketopyrrolopyrrole, dioxazine, flavanthrone, indanthrone, isoindoline, isoindolinone, isoviolanthrone, perinone, perylene, phthalocyanine, pyranthrone or thioindigo radical or is the radical of a mix-crystal of the aforementioned polycyclic pigments.
Claim 4
Dependent Claim 36 words
A pigment of the formula (I) as set forth in claim 1, wherein A is the radical of a five-membered aromatic heterocycle from the series consisting of furan, thiophene, pyrrole, pyrazole, thiazoles, oxazoles, triazoles and imidazole.
Claim 5
Dependent Claim 31 words
A pigment of the formula (I) as set forth in claim 1, wherein A is the radical of a fused heterocycle from the series thionaphthene, benzoxazole, benzothiazole, benzimidazole, benzotriazole and indole.
Claim 6
Dependent Claim 18 words
A pigment of the formula (I) as set forth in claim 1, wherein n is 0.01 to 0.1.

References Cited (Backward Citations)

US4256507A Cited
US4451398A Cited
US4310359A Cited
DE3106906A1 Cited
JPS58145762A Cited
JPS58225159A Cited
JPS58225160A Cited
US4720304A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-01-21 1994-07-23 1995-01-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-01-21 1998-07-23 1999-01-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-01-21 2002-07-23 2003-01-22 $7700.00 Window Closed / Lapsed

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