Binder mixture
First Claim
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1. Carbon-forming binder mixture for the production of thermostable molding materials, characterized in that it contains a mixture of phenol resin and resinous residues from bisphenol-A production.
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Abstract
Mixtures consisting of a phenolic resin, a hardener, and residues from bisphenol-A production in the ratio of 1:9 to 9:1 are used for the production of binder mixtures for thermostable molding materials. Usable for said purpose are binders with a minimum content of phenolic resin of 10%.
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Citations
19 Claims
- 1. Carbon-forming binder mixture for the production of thermostable molding materials, characterized in that it contains a mixture of phenol resin and resinous residues from bisphenol-A production.
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10. Pulverized resin, produced by condensation of phenol, bisphenol-A residues and formaldehyde under acid conditions.
Specification