PRODUCTION OF RADIATION-CURABLE VINYL CHLORIDE RESIN
PURPOSE:To obtain the title resin which suffers little discoloration and enables the production of a magnetic recording medium excellent in magnetic properties and durability by reacting a hydroxylated vinyl chloride resin with a compound having a specific group in the presence of a compound having...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To obtain the title resin which suffers little discoloration and enables the production of a magnetic recording medium excellent in magnetic properties and durability by reacting a hydroxylated vinyl chloride resin with a compound having a specific group in the presence of a compound having a glycidyl group. CONSTITUTION:A hydroxylated vinyl chloride resin is reacted with a compound having at least one ethylenic group and one NCO group per molecule in the presence of a glycidyl compound having a mol.wt. of 500 or lower. The glycidyl compound is used in such an amount that the glycidyl group amount is 1-1,000 equivalents per ton of the all reactants. Thus, a radiation-curable vinyl chloride resin which suffers neither discoloration nor a decrease in physical property can be produced at a temp. not lower than 60 deg.C. This resin enables the production of a magnetic recording medium excellent in mechanical and electrical properties. |
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