Heat curable alumino-silicate binder systems and their use

Details Heat curable alumino-silicate binder systems and their use Heat curable alumino-silicate binder systems and their use

1996-12-11

1998-04-28

Marcantoni, Paul

Compositions: coating or plastic

Coating or plastic compositions

Alkali metal silicate containing

106 383, 106 3835, C04B 1204

Patent

active

057439532

ABSTRACT:
This invention relates to heat curable alumino-silicate binder systems comprising as three separate parts (1) a soluble source of silica, (2) a caustic solution of an alkali silicate, and (3) aluminum silicate, and an alcohol which may be incorporated into (1), (2), or both. The binder systems are mixed with an aggregate to form a mix. The resulting mix is shaped and heated at an elevated temperature to form a cured shape, particularly foundry cores and molds. Heat is applied by warm air, baking in an oven, microwave, or preferably by hot-box equipment.

REFERENCES:
patent: 4162238 (1979-07-01), Bergna
patent: 4357313 (1982-11-01), Harvey et al.
patent: 4504314 (1985-03-01), Barker et al.
patent: 5332432 (1994-07-01), Okubi et al.
patent: 5474606 (1995-12-01), Twardowska et al.
patent: 5565026 (1996-10-01), Hense et al.

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