Binder coated foundry sand grains

Details Binder coated foundry sand grains Binder coated foundry sand grains

1983-01-20

1984-11-13

Hayes, Lorenzo B.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

106 385R, 164526, 428404, 524 41, 524 44, 524 45, B28B 734

Patent

active

044826540

ABSTRACT:
Foundry sand grains coated with a binder composition which comprises 100 wt. parts of methylolmelamine or alkylated methylolmelamine and 5 to 100 wt. parts of a water-soluble organic compound having a hydroxyl group. The sand grains coated with the composition are effective in a low-temperature foundry, especially for forming a core in an aluminum-alloy foundry.

REFERENCES:
patent: 3046146 (1962-07-01), Woodhead et al.
patent: 3106540 (1963-10-01), Freedman

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