US4235641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing agent compositions based on polypropylene wax
Assignee: Hoechst AG
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Filing: 1979-06-28
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Granted: 1980-11-25
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Expires: 1999-06-28
Abstract
Abstract Preparations of insoluble colorants, especially pigments, are obtained by distributing the colorant in molten polypropylene wax having a viscosity of 0.5 to 5 Pa.s, determined at 170° C., and an isotactic proportion of 40 to 90% by weight. These preparations are easily dispersible in polyolefins and especially useful for dyeing polypropylene in the mass.
Inventors
- 👤 Manfred Engelmann
- 👤 Karl Maier
- 👤 Arno Spange
- 👤 Bernd Dewald
- 👤 Hans-Joachim Lenz
- 👤 Wolfgang Teige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:39
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C08J2323/00; C08J2323/02; C08J2423/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
42 words
A preparation of an insoluble colorant consisting essentially of an insoluble colorant distributed in an effective amount of a polypropylene wax having at 170° C. a viscosity of 0.5 to 5 Pa.s and an isotactic proportion of 40 to 90% by weight.
Claim 2
Dependent Claim
42 words
A preparation of an insoluble colorant consisting essentially of an insoluble colorant distributed in an effective amount of a polypropylene wax having at 170° C. a viscosity of 0.5 to 5 Pa.s and an isotactic proportion of 40 to 90% by weight.
Claim 3
Dependent Claim
13 words
The preparation as claimed in claim 1, wherein the colorant is a pigment.
Claim 4
Dependent Claim
20 words
The preparation as claimed in claim 1, wherein the viscosity range of the polypropylene wax is 1 to 5 Pa.s.
Claim 5
Dependent Claim
21 words
The preparation as claimed in claim 1, wherein the isotactic proportion of the polypropylene wax is 50 to 80% by weight.
Claim 6
Dependent Claim
18 words
The preparation as claimed in claim 1, wherein the amount of colorant is up to 80% by weight.
Claim 7
Dependent Claim
18 words
The preparation as claimed in claim 1, wherein the amount of colorant is 20 to 70% by weight.
Claim 8
Dependent Claim
31 words
The preparation as claimed in claim 2, consisting essentially of about 20 to 70% by weight of the pigment and of about 30 to 80% by weight of said polypropylene wax.
Claim 9
Dependent Claim
21 words
A process for manufacturing a preparation as claimed in claim 1, which comprises distributing the colorant in the molten polypropylene wax.
Claim 10
Dependent Claim
21 words
A process for dyeing polyolefins in the mass which comprises dispersing in the polyolefin a preparation as claimed in claim 1.
Claim 11
Dependent Claim
12 words
The process as claimed in claim 9, wherein the polyolefin is polypropylene.
Claim 12
Dependent Claim
28 words
The preparation as claimed in any one of claims 1 to 7 wherein said preparation consists of an effective amount of the polypropylene wax and the insoluble colorant.
References Cited (Backward Citations)
US3767444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |