Method of preparing carbamide-furan resin

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525161, 525398, 525509, 528249, C08L 4500

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042437806

ABSTRACT:
A method for preparing a carbamide-furan resin comprises reacting a urea-formaldehyde resin unlimitedly soluble in water with urea at a temperature within the range of from 50.degree. to 85.degree. C. and modifying the resulting urea-formaldehyde resin with furyl alcohol at a ratio therebetween expressed in parts by weight equal to 100:20-200 respectively at a temperature within the range of from 50.degree. to 85.degree. C., pH of from 7.2 to 8.9 simultaneously with dehydration of the product being modified under vacuum.

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