Composition and process for making a green colored polyester
First Claim
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1. In a polyester article the improvement comprising:
- a small amount of various color-imparting compounds contained in the polyester for imparting a green color thereto,said compounds comprising an iron compound, a titanium catalyst, and a blue pigment, said iron compound being a preformed alpha-ferric oxide or an iron salt which is thermally decomposed during polymerization of said polyester to an alpha-ferric oxide,the proportion of said compounds being sufficient to effect a green color.
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Abstract
Specific color imparting compounds, including pigments and catalysts are used to produce a polyester resin having a green color. The compounds are added during polymerization of the polymer and the resins produced can be utilized to make various containers or packages to hold liquids or solids.
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Citations
30 Claims
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1. In a polyester article the improvement comprising:
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a small amount of various color-imparting compounds contained in the polyester for imparting a green color thereto, said compounds comprising an iron compound, a titanium catalyst, and a blue pigment, said iron compound being a preformed alpha-ferric oxide or an iron salt which is thermally decomposed during polymerization of said polyester to an alpha-ferric oxide, the proportion of said compounds being sufficient to effect a green color. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A green colored polyester resin, comprising:
color-imparting compounds dispersed in the polyester resin, said compounds being an iron compound, a titanium catalyst, and a blue pigment, said iron compound being a preformed alpha-ferric oxide or an iron salt which is thermally decomposed during polymerization of said resin to alpha-ferric oxide, the amount of said pigments being such so that a green color is imparted to said polyester resin. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A process for making a polyester resin having a green color, comprising the steps of:
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preparing a polyester resin, adding an iron compound to said polyester resin during preparation thereof, adding a titanium catalyst to said polyester resin during preparation thereof, adding a blue pigment to said polyester resin during preparation thereof, and imparting a green color to said resin by utilizing sufficient amounts of said iron compound, said titanium catalyst, and said blue pigment. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification