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Home › Dispersant and antioxidant VI improvers based on olefin copolymers containing phenothiazine and aromatic amine groups

Dispersant and antioxidant VI improvers based on olefin copolymers containing phenothiazine and aromatic amine groups

US Patent 5942471 · Granted Aug 24, 1999

Estimated economic value: $3,178,000 ⓘ

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