Claims
- 1. A color concentrate composition for polymeric materials comprising:
at least one pigment in an amount from about 1 part to about 75 parts per 100 total parts by weight of said composition; at least one blowing agent in an amount from about 1 part to about 75 parts per 100 total parts by weight of said composition; a binder component in an amount greater than about 10 parts per 100 total parts by weight of said composition; and optionally, at least one functional additive component in an amount from about 0 to about 98 parts per 100 total parts by weight of said composition, said composition being substantially free of a polymeric resin material, said composition having been processed at a temperature below an activation temperature of the at least one blowing agent in order to prevent premature degradation, and said composition being in a solid particulate form.
- 2. A color concentrate composition according to claim 1, wherein said at least one pigment is an inorganic pigment, and organic pigment, or a combination thereof.
- 3. A color concentrate composition according to claim 1, wherein said at least one blowing agent is an endothermic blowing agent or an exothermic blowing agent, or a combination thereof.
- 4. A color concentrate composition according to claim 3, wherein said composition includes said at least one functional additive component.
- 5. A color concentrate composition according to claim 4, wherein said functional additive component is present in an amount from about 1 to about 70 parts per 100 parts by weight of said composition.
- 6. A color concentrate composition according to claim 4, wherein said composition is in the form of a pellet.
- 7. A color concentrate composition according to claim 6, wherein said composition has been processed at a temperature of less than about 200° F.
- 8. A color concentrate composition according to claim 7, wherein said at least one functional additive component comprises calcium carbonate.
- 9. A color concentrate composition according to claim 1, wherein said binder component comprises a wax having a molecular weight of less than 10,000.
- 10. A color concentrate composition according to claim 9, wherein said wax is an ethylene bis-stearamide wax, a hydroxystearamide wax, or a combination thereof.
- 11. A color concentrate composition according to claim 9, wherein said wax is an ethylene bis-stearamide wax, a hydroxystearamide wax, a polycaprolactam wax, a polyolefin wax, or a combination thereof.
- 12. A color concentrate composition according to claim 9, wherein said wax is present in an amount from about 10 to about 40 parts per 100 parts by weight of the total composition.
- 13. A method for preparing a color concentrate composition for use in polymeric materials, comprising the steps of:
compounding said color concentrate composition comprising at least one pigment, at least one blowing agent, a binder component and optionally a functional additive; mixing said composition at a temperature below about 180° F.; and cold compression molding said composition into a particulate form.
- 14. A method for preparing a color concentrate composition according to claim 13, wherein said “cold compression molding step” is conducted at a temperature below the activation temperature of said at least one blowing agent.
- 15. A method for preparing a color concentrate composition according to claim 14, wherein said functional additive component is present in an amount from about 1 to about 98 parts per 100 parts by weight of said composition.
- 16. A method for preparing a color concentrate composition according to claim 15, wherein said pigment is present in said composition in an amount from about 1 part to about 75 parts and said blowing agent is present in said composition in an amount from about 1 part to about 75 parts per 100 parts by weight of said composition.
- 17. A method for preparing a color concentrate composition according to claim 12, wherein said blowing agent is an endothermic blowing agent, or an exothermic blowing agent, or a combination thereof.
- 18. A method for preparing a color concentrate composition according to claim 13, wherein said functional additive component is present in an amount from about 1 to about 50 parts per 100 parts by weight of said composition.
- 19. A method for preparing a color concentrate composition according to claim 13, wherein said binder component comprises a wax having a molecular weight of less than about 10,000.
- 20. A method for preparing a color concentrate composition according to claim 19, wherein said wax is an ethylene bis-stearamide wax, a hydroxystearamide wax, or a combination thereof.
- 21. A method for preparing a color concentrate composition according to claim 19, wherein said wax is an ethylene bis-stearamide wax, a hydroxystearamide wax, a polycaprolactam wax, a polyolefin wax, or a combination thereof.
- 22. A method for preparing a color concentrate composition according to claim 19, wherein said wax is present in an amount from about 10 to about 40 parts per 100 parts by weight of the total composition.
- 23. A method for preparing a color concentrate composition according to claim 13, wherein said particulate form is a pellet, a chip, or a flake.
- 24. A method for preparing a color concentrate composition according to claim 23, wherein said particulate is a pellet.
CROSS REFERENCE
[0001] This application is a continuation-in-part of prior U.S. application Ser. No. 10/126,312, filed Apr. 19, 2002, which is a continuation-in-part of prior U.S. application Ser. No. 09/844,459, filed Apr. 27, 2001, and both entitled “A Composition and Method for Purging Polymer Processing Equipment.”
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
10126312 |
Apr 2002 |
US |
Child |
10150305 |
May 2002 |
US |
Parent |
09844459 |
Apr 2001 |
US |
Child |
10126312 |
Apr 2002 |
US |