RYCHEM
SPECIALTY AND PROPRIETARY CHEMICAL COMPOSITIONS FOR USE AS PROCESSING AIDS IN PULP AND PAPER MANUFACTURING AND CONVERTING; PROCESS AIDS-NAMELY, DISPERSANTS, SLIME CONTROL COMPOSITIONS, RETENTION AIDS, EMULSION POLYMERS, DRY AND WET STRENGTH ADDITIVES, RHEOLOGY CONTROL AGENTS
Expired · September 18, 1972 · 72436068 ·