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Home › Alkyl substituted phenol-polyethylenepolyamine-formaldehyde resins as asphaltene dispersants

Alkyl substituted phenol-polyethylenepolyamine-formaldehyde resins as asphaltene dispersants

US Patent 5494607 · Granted Feb 27, 1996

Estimated economic value: $3,301,000 ⓘ

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