Optically clear articles incorporating protective plastic coatings Patent #: 4261656
ApplicationNo. 371298 filed on 06/26/1989
US Classes:428/426, Of quartz or glass359/485, Light polarization without any external input428/423.3, Next to second layer of polyamidoester428/432Next to metal or compound thereof
ExaminersPrimary: Cashion, Merrell C. Jr.
Assistant: Hulina, Amy
Attorney, Agent or Firm
Foreign Patent References
International ClassesB32B 017/06
Foreign Application Priority Data1982-07-27 FR
AbstractThis invention is directed to the production of laminated, transparent, polarizing glass articles. The inventive method contemplates five basic steps:(1) forming parallel microgrooves on a surface of a glass support;(2) washing and drying said surface;(3) depositing on said surface a mixture of organic colorants corresponding to the three primary colors and exhibiting a nematic state to yield a coating displaying polarizing properties;(4) treating the polarizing coating with an aqueous solution of inorganic salts having an acid pH; and(5) applying a continuous, optically transparent, composite film upon the polarizing coating and bonding it thereto.