EP0153209A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polymers of the polymethacrylate type, use of these polymers of the polymethacrylate type as polyfunctional additives in lubricating oil compositions, and process for the preparation of such polymers of the polymethacrylate type
Assignee: Repsol Petroleo SA
•
Filing: 1985-01-24
•
Granted: —
•
Expires: 2005-01-24
Abstract
Abstract 1. Novel methacrylic polymers or of the polymethacrylate type, characterized in that they are obtained by copolymerizing a mixture of : (I) : a methacrylate or a mixture of methacrylates having an average number of 12-20 carbon atoms in the alkyl chain ; (II) : a methacrylate or a mixture of methacrylates having an average carbon atom number in their alkyl chains comprised between 4 and 10 ; and (III) : methyl methacrylate.
Inventors
- 👤 Juan Antonio Delgado Oyague
- 👤 Amando Nuevo Gonzalez
- 👤 Mariano Hernandez-Vaquero Espinosa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 02:43
CPC Classifications
C; C10; C10M; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1808; C08F220/1818; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.