| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 01.00 |
| PATENT ASSIGNEE | Polaroid (Cambridge; Mass) |
| PATENT CLAIMS |
Layer comprising hydrophilic polymer (3-15 parts) & poly( vinylbenzyl quat ammonium salt) (1 part) comprising mono mer units - CH2=CH-C6H4-CH2-N(Me)3+ . Anion - CH2=CH-C6H4-CH2-N(Me)2(C11H23)+ . Anion |
| PATENT PHOTOCOPY | Available on request |
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