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PROCESS FOR PREPARING HYDROXYPROPYL METHYL CELLULOSE ETHERS USEFUL AS SUSPENDING AGENTS FOR SUSPENSION POLYMERIZATION OF VINYL CHLORIDE AND AS THICKENING AGENTS FOR ORGANIC LIQUIDS
PROCESS FOR PREPARING HYDROXYPROPYL METHYL CELLULOSE ETHERS USEFUL AS SUSPENDING AGENTS FOR SUSPENSION POLYMERIZATION OF VINYL CHLORIDE AND AS THICKENING AGENTS FOR ORGANIC LIQUIDS