| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 11.99 |
| PATENT ASSIGNEE | Shell Oil |
| PATENT CLAIMS |
- Making polymer cement of styrene/butadiene block copo lymer (1) - Providing aq phase - Adding to (1) copolymer (0.5-20%) of styrene & CH2=CR- -CO2Me; R = H,Me as non-migrating polymeric stabr - Emulsifying cement with aq phase at aq phase/cement = 10:1-1:3 - Removing solvent, cosolvent & excess water from emulsion |
| PATENT PHOTOCOPY | Available on request |
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