| SHRIRAM INSTITUTE FOR INDUSTRIAL RESEARCH Patent applications |
| Patent application number | Title | Published |
|---|
| 20100234487 | Barium Containing Novel Polyacrylate for Optical Applications - A process for the preparation of barium containing polyacrylates for optical and coating applications. The process consists in dispersing octahydrate of barium hydroxide in acrylic acid to form a monomer mixture. An aromatic carboxylic acid is added to the monomer mixture and then a cross linking agent is added thereto. Such a monomer mixture is subjected to the step of polymerization by gamma radiation. | 09-16-2010 |
| 20100029805 | Lead Containing Novel Polyacrylate for Optical Applications - A process for the preparation of lead containing polyacrylates for optical applications. The process consists in dispersing lead monoxide in acrylic acid to form a monomer mixture. An aromatic carboxylic acid is added to the monomer mixture and then a cross linking agent is added thereto. Such a monomer mixture is subjected to the step of polymerization by gamma radiation. | 02-04-2010 |
| 20100016524 | Process for the Synthesis and Preparation of Polymeric Materials for Use in Optical Applications Such as Plastic Lenses - This invention relates to a process for the preparation of plastic material for use in optical lenses comprising the steps of: a) synthesizing lead acrylate by adding lead monoxide to NaoH, which is stirred to obtain a homogenous mixture, b) adding an inhibitor to such a monomer mixture; c) adding acrylic acid drop wise to such a monomer mixture so as to avoid the formation of by products, d) heating the mixture of step (c) to a temperature of 35 to 45° C. till a white precipitate of lead acrylate is obtained, e) filtering, washing and drying the precipitate, f) subjecting lead acrylate to the step of polymerization by stepwise heating. | 01-21-2010 |
| 20090209675 | Lanthanum Containing Novel Polyacrylate for Optical Lenses - A process for the preparation of lanthanum containing polyacrylates for optical applications. The process consists in dispersing lanthanum oxide in acrylic acid to form a monomer mixture. An aromatic carboxylic acid is added to the monomer mixture and then a cross linking agent is added thereto. Such a monomer mixture is subjected to the step of polymerization by gamma radiation. | 08-20-2009 |
