Process for preparation of resin and resin obtained

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carbohydrate or derivative as a reactant

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524 13, 524 14, 524 15, 524 27, 524 35, 524 47, 524 48, 524 54, 524 55, 524 58, 536126, C08L 302, C08L 500, C08L 502

Patent

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046924787

ABSTRACT:
The process of preparing a formaldehyde-free, thermosetting resin which is especially useful for bonding lignocellulosic materials together to form plywood or particle board, which process comprises first reacting an aqueous preparation containing a carbohydrate raw material with a mineral acid to convert the carbohydrate to polymerizable reactants and second reacting the polymerizable reactants with ammonia to form the thermosetting resin. The resin can be further cross-linked to form an insoluble resinous material by heating.

REFERENCES:
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patent: 2001430 (1935-05-01), Meigs
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patent: 4085076 (1978-04-01), Gibbons et al.
patent: 4107379 (1978-08-01), Stofko
patent: 4183997 (1980-01-01), Stofko
patent: 4357194 (1982-11-01), Stofko
patent: 4524164 (1985-06-01), Viswanathan et al.

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