Accelerated melamine-aldehyde resin and method of making a fast-

Details Accelerated melamine-aldehyde resin and method of making a fast- Accelerated melamine-aldehyde resin and method of making a fast-

1973-05-24

1977-12-20

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

156335, 260 334R, 260 676R, 428530, C08G 1232, C08L 6128

Patent

active

040640892

ABSTRACT:
An accelerated melamine-aldehyde resin is made by mixing about 0.001 to about 2% of a free-radical generator into the resin. A laminate is made by preparing a composition of an aldehyde and melamine in a mole ratio of about 1.5 to about 2.0, adjusting the pH of the composition to about 7 to about 9, heating the composition until a sample of it produces a positive hydrophobe in ice water, mixing about 0.001 to about 2% of a free-radical generator and up to about 80 phr of a solvent into the composition, coating paper with the composition to a weight ratio of coated paper to uncoated paper of about 1.2 to about 2.5, drying the composition and partially curing the compositin, stacking the coated paper, and curing the stack under heat and pressure.

REFERENCES:
patent: 2467280 (1949-04-01), Walter
patent: 3148937 (1964-09-01), Ross et al.
patent: 3839289 (1974-10-01), Waitkus
Encyclopedia of Polymer Science and Technology, Interscience Publischers, (1965), vol. 9, p. 835.

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