| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 07.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Compd comprising addition prodt of - Organic chromophore having reactive -OH - Polyisocyanate - Carboxylic acid having reactive -OH Said polyisocyanate reacts with each of said -OH to form isocyanate terminal groups on said organic chromophore & subsequently said carboxylic acid reacts with isocyanate terminal group to form urethane moieties on resulting compd |
| PATENT PHOTOCOPY | Available on request |
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