Polymer granules with anisotropic colouring, the manufacturing thereof and the use thereof to produce coatings and moulded articles
AssigneeEtablissements Boulenger
InventorsJacques Berlemont, Xavier Poupon
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Abstract
The process for manufacturing polymer granules includes the operations of mixing a base polymer and additives, with a specific step of adding shading colorant to the cured polymer mixture followed by a step of carrying out an incomplete homogenization of the colorant with the polymer mixture, the duration of which is fixed according to desired colouring anisotropy characteristics, the process providing granules having such an anisotropy which can be used for the manufacturing of coatings and moulded articles.
Claims13
A process for manufacturing polymer granules including the successive operations of mixing a base polymer and additives, shaping and grinding the cured polymer mixture to form granules, characterized in that it includes a specific step of adding a shading colorant to the mixture of the base polymer and of the additives, followed by a step of carrying out an incomplete homogenization of said shading colorant in said mixture, the duration of which is fixed according to desired colouring anisotropy characteristics of the granules.
Polymer granules usable for the manufacturing of surface coatings or of moulded articles, characterized in that they present anisotropic shades of colouring.
Dependencies are inferred from the claim text.