Process for the preparation of vinyl chloride resins having good thermal stability
Abstract
Abstract 1. A PROCESS FOR THE PREPARATION OF VINYL CHLORIDE RESINS HAVING EXCELLENT THERMAL STABILITY, WHICH COMPRISES: (A) HEAT TREATING A VINYL CHLORIDE RESIN WITH 30 TO 1,000 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF THE VINYL CHLORIDE RESIN OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF WATER, METHANOL, ETHANOL, PROPANOL, BUTANOL, PENTANOL, HEXANOL, ETHYLENE GLYCOL, PROPYLENE GLYCOL, AND GLYCERINE, UNDER THE TEMPERATURE AND TIME CONDITIONS SHOWN IN THE ACOMPANYING DRAWING BY A PENTAGONAL REGION FORMED BY CONNECTING POINTS A, B, C, D, AND E, WHEREIN (1) POINT A REPRESENTS A TEMPERATURE OF 180*C. AND A TIME OF 0.083 HOURS, (2) POINT B REPRESENTS A TEMPERATURE OF 120*C. AND A TIME OF 10 HOURS, (3) POINT C REPRESENTS A TEMPERATURE OF 120*C. AND A TIME OF 50 HOURS, (4) POINT D REPRESENTS A TEMPERATURE OF 220*C. AND A TIME OF 5 HOURS, (5) POINT E REPRESENTS A TEMPERATURE OF 220*C. AND A TIME OF 0.083 HOURS, AND (B) THEREAFTER REMOVING THE COMPOUND OR MIXTURE OF COMPOUNDS FROM THE REACTION SYSTEM.
Inventors
- 👤 T Suzuki
- 👤 T Masuda
- 👤 M Senuma
- 👤 I Takakura
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
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