Patent US4480064A successfully refreshed from Google Patents.
US4480064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color pigment for use in the production of thermoplastic articles
Assignee: Elkem Metals Co LP
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Filing: 1983-11-07
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Granted: 1984-10-30
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Expires: 2003-11-07
Abstract
Abstract Manganomanganic oxide fume or a material containing manganomanganic oxide fume as its principle ingredient is used as a color pigment in the production of thermoplastic articles and particularly thermoplastic films.
Inventors
- 👤 Kuldip S. Chopra
- 👤 George E. Ealer
- 👤 George A. Salensky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:29
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08J; C08J3/00; C08J3/20; C08J3/201
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
An improved method for producing colored polyethylene thermoplastic articles which comprises the steps of forming a mixture consisting essentially of polyethylene thermoplastic resin together with at least one color pigment of finely-divided manganomanganic oxide fume, in amounts such that said polyethylene thermoplastic articles will contain from about 0.1% to 20% by weight of said pigment, said finely-divided manganomanganic oxide fume having spherical particles of a size of between about 0.1 and about 4.0 microns, heating the mixture to elevated temperatures in order to melt the polyethylene thermoplastic resin and to uniformly disperse the color pigment throughout the resin and then shaping the polyethylene thermoplastic resin into the finished article.
Claim 2
Dependent Claim
109 words
An improved method for producing colored polyethylene thermoplastic articles which comprises the steps of forming a mixture consisting essentially of polyethylene thermoplastic resin together with at least one color pigment of finely-divided manganomanganic oxide fume, in amounts such that said polyethylene thermoplastic articles will contain from about 0.1% to 20% by weight of said pigment, said finely-divided manganomanganic oxide fume having spherical particles of a size of between about 0.1 and about 4.0 microns, heating the mixture to elevated temperatures in order to melt the polyethylene thermoplastic resin and to uniformly disperse the color pigment throughout the resin and then shaping the polyethylene thermoplastic resin into the finished article.
Claim 3
Dependent Claim
83 words
The method according to claim 1 wherein the manganomanganic oxide fume color pigment is added to the thermoplastic resin in the form of a color concentrate consisting essentially of at least about 20 to 50% by weight of the thermoplastic resin, about 10 to 70% by weight of finely divided manganomanganic oxide fume pigment having spherical particles of about 0.1 to about 4.0 microns in size and 0 to 70% by weight in the aggregate of additional pigments, antioxidents and a dispersion agent.
Claim 4
Dependent Claim
71 words
A color concentrate for use in the production of colored polyethylene thermoplastic articles consisting essentially of from about 20-50% by weight of polyethylene thermoplastic resin, from about 10 to 70% by weight of a finely divided manganomanganic oxide fume pigment having spherical particles of from about 0.1 to about 4.0 microns in size and from 0 to 70% by weight in the aggregate of additional pigments, antioxidents and a dispersion agent.
Claim 5
Dependent Claim
71 words
A color concentrate for use in the production of colored polyethylene thermoplastic articles consisting essentially of from about 20-50% by weight of polyethylene thermoplastic resin, from about 10 to 70% by weight of a finely divided manganomanganic oxide fume pigment having spherical particles of from about 0.1 to about 4.0 microns in size and from 0 to 70% by weight in the aggregate of additional pigments, antioxidents and a dispersion agent.
Claim 6
Dependent Claim
39 words
A colored polyethylene thermoplastic article consisting essentially of polyethylene thermoplastic resin containing from about 0.1% to 20% by weight of a finely divided manganomanganic oxide fume pigment having spherical particles from about 0.1 to about 4.0 microns in size.
Claim 7
Dependent Claim
39 words
A colored polyethylene thermoplastic article consisting essentially of polyethylene thermoplastic resin containing from about 0.1% to 20% by weight of a finely divided manganomanganic oxide fume pigment having spherical particles from about 0.1 to about 4.0 microns in size.
Claim 8
Dependent Claim
14 words
A colored polyethylene thermoplastic article according to claim 4 which is an extruded film.
Claim 9
Dependent Claim
13 words
A colored thermoplastic article according to claim 4 which is a molded article.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |