Process for the preparation of densely colored pellet for synthetic resins
AssigneeJapan Liquid Crystal Co., Ltd.
InventorsIchiro Shibanai, Kenji Nakamura
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Abstract
A process for the preparation of a densely colored pellet for addition to a synthetic resin involves converting a dye into a cyclodextrin clathrate compound thereof, powdering the clathrate compound by drying, mixing the powder with a synthetic resin material in a molten state and pelletizing the mixture. The obtained pellet can be uniformly dispersed in a synthetic resin material to color the resin material without causing bleeding of the dye or fading of the product.
Claims16
A process for preparing a colored pellet for use in coloring a synthetic resin, comprising the steps of forming a clathrate compound of a dye with cyclodextrin, forming a powder of said clathrate compound, mixing the powdered clathrate compound with a synthetic resin material, and forming pellets from said mixture.
A process for preparing a colored pellet for use in coloring a synthetic resin, comprising the steps forming a clathrate compound of a dye with a decomposed starch containing cyclodextrin, forming a powder of said clathrate compound, mixing the powdered clathrate compound with a synthetic resin material, and forming pellets from said mixture.
Dependencies are inferred from the claim text.