Polymer microspheres containing latent colorants and method of preparation
申请人:Leon W. Jeffrey
公开号:US20050020786A1
公开(公告)日:2005-01-27
The present invention relates to a polymer microsphere comprising at least one polymer and at least one bound latent colorant, wherein the microsphere is stabilized by at least one stabilizing polymer. The invention also includes a method of preparing polymer microspheres comprising combining latent colorant, ethylenically unsaturated monomer, stabilizing polymer, and an initiator in solvent and initiating polymerization to form a polymeric microsphere stabilized by a stabilizing polymer bound to the surface of the polymeric microsphere.
POLYMER MICROSPHERES CONTAINING LATENT COLORANTS AND METHOD OF PREPARATION
申请人:Leon W. Jeffrey
公开号:US20050027045A1
公开(公告)日:2005-02-03
The present invention relates to a polymer microsphere comprising at least one polymer and at least one bound latent colorant, wherein the microsphere is stabilized by at least one stabilizing polymer. The invention also includes a method of preparing polymer microspheres comprising combining latent colorant, ethylenically unsaturated monomer, stabilizing polymer, and an initiator in solvent and initiating polymerization to form a polymeric microsphere stabilized by a stabilizing polymer bound to the surface of the polymeric microsphere.
The present invention provides a method for tinting an optical substrate. The method includes the steps of applying a coating composition containing: • a polymerisable monomer having a polyoxyalkylene backbone containing at least four contiguous oxyalkylene units, and • an abrasion resistant agent and/or a high crosslinking polymerisable monomer to the optical substrate, polymerising the coating composition to form an abrasion resistant coating layer, and introducing a tinting compound into the coating layer to thereby tint the optical substrate. The invention also provides a coating composition and an optical substrate that is tinted according to the method of the invention.