US4320046A
Expired / Lapsed
US
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Method for coloring olefin polymers
Assignee: Chevron USA Inc
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Filing: 1980-09-15
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Granted: 1982-03-16
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Expires: 2000-09-15
Abstract
Abstract Ethylene or propylene polymers are dyed by dispersing a small quantity of a copolymer of a C-14 or higher alpha-olefin and maleic anhydride therein and subsequently treating the composition with an aqueous solution of a basic dye stuff such as Malachite Green.
Inventors
- 👤 Richard H. Havens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:57
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L33/00; C08L2207/00; C08L2207/06; C08L2207/066; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
80 words
A method for coloring an ethylene or propylene polymer which consists essentially of: (a) Dispersing in said olefin polymer an equimolar copolymer of a C-14 or higher alpha-olefin and maleic anhydride, and (b) Contacting the composition of step (a) with an aqueous solution of a basic dyestuff; the quantity of the alpha-olefin/maleic anhydride copolymer incorporated into the olefin polymer in step (a) being sufficient to produce the desired intensity of color when contacted with the dye solution in step (b).
Claim 2
Independent Claim
80 words
A method for coloring an ethylene or propylene polymer which consists essentially of: (a) Dispersing in said olefin polymer an equimolar copolymer of a C-14 or higher alpha-olefin and maleic anhydride, and (b) Contacting the composition of step (a) with an aqueous solution of a basic dyestuff; the quantity of the alpha-olefin/maleic anhydride copolymer incorporated into the olefin polymer in step (a) being sufficient to produce the desired intensity of color when contacted with the dye solution in step (b).
Claim 3
Dependent Claim
23 words
A method of claim 1 in which the olefin polymer is a polymer having polymerized therein at least about 95 weight % ethylene.
Claim 4
Dependent Claim
23 words
A method of claim 2 in which the olefin polymer is a polymer having polymerized therein at least about 95 weight % propylene.
Claim 5
Dependent Claim
43 words
A method of claim 1, 2, or 3 in which the alpha-olefin/maleic anhydride copolymer is a copolymer of alpha-octadecene and maleic anhydride and is included in the composition in an amount constituting about 0.25 to about 4.0 weight % of the total composition.
Claim 6
Dependent Claim
38 words
A colored olefin polymer composition consisting essentially of an ethylene or propylene polymer having dispersed therein a color body formed by contacting an equimolar copolymer of a C-14 or higher alpha-olefin and maleic anhydride with a basic dyestuff.
Claim 7
Dependent Claim
38 words
A colored olefin polymer composition consisting essentially of an ethylene or propylene polymer having dispersed therein a color body formed by contacting an equimolar copolymer of a C-14 or higher alpha-olefin and maleic anhydride with a basic dyestuff.
Claim 8
Dependent Claim
26 words
A colored olefin polymer composition of claim 5 in which the olefin polymer is a polymer having polymerized therein at least about 95 weight % ethylene.
Claim 9
Dependent Claim
26 words
A colored olefin polymer composition of claim 6 in which the olefin polymer is a polymer having polymerized therein at least about 95 weight % propylene.
Claim 10
Dependent Claim
45 words
A colored olefin polymer composition of 5, 6, or 7 in which the alpha-olefin/maleic anhydride copolymer is a copolymer of alpha-octadecene and maleic anhydride and is included in the composition in an amount constituting about 0.25 to about 4.0 weight % of the total composition.
Claim 11
Dependent Claim
45 words
A colored olefin polymer composition of 5, 6, or 7 in which the alpha-olefin/maleic anhydride copolymer is a copolymer of alpha-octadecene and maleic anhydride and is included in the composition in an amount constituting about 0.25 to about 4.0 weight % of the total composition.
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) | 1985-03-15 | 1985-09-14 | 1986-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-15 | 1989-09-14 | 1990-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-15 | 1993-09-14 | 1994-03-16 | $7700.00 | Window Closed / Lapsed |