Patent US4761968A successfully refreshed from Google Patents.
Patent US4846887A successfully refreshed from Google Patents.
US4846887A
Expired / Lapsed
US
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Process for the production of micronized waxes
Assignee: Huels AG
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Filing: 1986-09-19
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Granted: 1989-07-11
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Expires: 2006-09-19
Abstract
Abstract A microwax for use in printing ink and varnish systems is obtained by first spraying a wax melt to obtain a powder comprising substantially spherical particles, and subsequently grinding the powder of spherical particles.
Inventors
- 👤 Adolf Kuehnle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:35
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C09; C09D; C09D101/00; C09D101/08; C09D101/16; C09D101/18; C09D11/00; C09D11/02; C09D11/12; C08J2391/00; C08J2391/06
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
53 words
A process for the production of a micronized wax powder comprising subjecting a starting material of substantially spherical wax particles, producible by spraying a wax melt, to a grinding step to yield a micronized wax powder wherein at least 95% by weight of the particles of said powder are smaller than 32 μm.
Claim 2
Dependent Claim
53 words
A process for the production of a micronized wax powder comprising subjecting a starting material of substantially spherical wax particles, producible by spraying a wax melt, to a grinding step to yield a micronized wax powder wherein at least 95% by weight of the particles of said powder are smaller than 32 μm.
Claim 3
Dependent Claim
51 words
A process for the production of a micronized wax powder comprising the steps of: (a) spraying a wax melt to form a fine powder of predominantly spherical particles, wherein at least 60% by weight of the particles are smaller than 96 μm; and (b) grinding the particles produced by step (a).
Claim 4
Dependent Claim
51 words
A process for the production of a micronized wax powder comprising the steps of: (a) spraying a wax melt to form a fine powder of predominantly spherical particles, wherein at least 60% by weight of the particles are smaller than 96 μm; and (b) grinding the particles produced by step (a).
Claim 5
Dependent Claim
23 words
A process according to claim 2, wherein the particles produced by step (a) are at least 50% by weight smaller than 48 μm.
Claim 6
Dependent Claim
23 words
A process according to claim 2, wherein the particles produced by step (b) are at least 95% by weight smaller than 32 μm.
Claim 7
Dependent Claim
23 words
A process according to claim 4, wherein the particles produced by step (b) are at least 80% by weight smaller than 24 μm.
Claim 8
Dependent Claim
23 words
A process according to claim 2, wherein the particles produced by step (b) are at least 80% by weight smaller than 24 μm.
Claim 9
Dependent Claim
13 words
A micronized wax powder produced in accordance with the process of claim 1.
Claim 10
Dependent Claim
13 words
A micronized wax powder produced in accordance with the process of claim 2.
Claim 11
Dependent Claim
66 words
A process for the production of a micronized was powder comprising grinding a starting material of substantially spherical wax particles sufficiently to yield a micronized wax powder possessing luster-retaining spherical particle characteristics and easily-dispersible broken particle characteristics, said substantially spherical wax particles being producible by spraying a wax melt, and at least 60% by weight of said substantially spherical wax particles are smaller than 96 μm.
Claim 12
Dependent Claim
66 words
A process for the production of a micronized was powder comprising grinding a starting material of substantially spherical wax particles sufficiently to yield a micronized wax powder possessing luster-retaining spherical particle characteristics and easily-dispersible broken particle characteristics, said substantially spherical wax particles being producible by spraying a wax melt, and at least 60% by weight of said substantially spherical wax particles are smaller than 96 μm.
Claim 13
Dependent Claim
13 words
A micronized wax powder produced in accordance with the process of claim 9.
Claim 14
Dependent Claim
16 words
A process according to claim 1, wherein said grinding step is conducted within a jet mill.
Claim 15
Dependent Claim
16 words
A process according to claim 2, wherein grinding step (b) is conducted within a jet mill.
Claim 16
Dependent Claim
28 words
A process according to claim 1, wherein said grinding is conducted sufficiently to yield a micronized wax powder possessing luster-retaining spherical particle characteristics and easily-dispersible broken particle characteristics.
Claim 17
Dependent Claim
28 words
A process according to claim 2, wherein said grinding is conducted sufficiently to yield a micronized wax powder possessing luster-retaining spherical particle characteristics and easily-dispersible broken particle characteristics.
References Cited (Backward Citations)
US3441628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |