反应详情

The phenol silicate compound produced in Example 2 is added to an aqueous solution of formaldehyde in the ratio of 1 to 3 mols. A dilute mineral acid, hydrochloric acid, is added to the mixture until the pH is 5 to 6 then heated to 65° to 120° C. for 10 to 90 minutes while agitating at ambient pressure thereby producing poly (formaldehyde phenol silicate) resinous product.

1. temperaturethen heated to 65° to 120° C. for 10 to 90 minutes