Chemical resistant decorative laminates
AssigneeWestinghouse Electric Corp.
InventorsLenon G. Brooker, Donald L. Jarrell
Life of this patent
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Abstract
A resin impregnated and coated, fibrous, chemical resistant decorative laminate is made, having a bottom portion impregnated with phenolic resin, a top portion impregnated and coated with vinyl ester terminated bisphenol A epoxy resin, and a middle portion impregnated with aminotriazine-aldehyde resin which acts as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin.
Claims16
A resin impregnated and resin coated, fibrous, cellulosic, heat and pressure consolidated, chemical resistant laminate, said laminate comprising a plurality of cellulosic sheets and having a bottom portion impregnated with phenol-aldehyde resin, a top portion impregnated at least about 1 mil deep and coated at least about 1 mil thick with vinyl ester terminated bisphenol A epoxy resin, and a middle portion impregnated with aminotriazine-aldehyde resin, where the aminotriazine-aldehyde resin contacts the vinyl ester terminated bisphenol A epoxy resin and functions as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin.
A resin impregnated and resin coated, fibrous, cellulosic, heat and pressure consolidated, chemical resistant decorative laminate made of a plurality of cellulosic sheets and comprising:
- A. a bottom core portion impregnated with phenol-aldehyde resin, and
- B. a top decorative portion impregnated and coated with resin, where the part of the decorative portion facing the core is impregnated with aminotriazine-aldehyde resin and the top part of the decorative portion is impregnated at least about 1 mil deep and coated at least about 1 mil thick with vinyl ester terminated bisphenol A epoxy resin, where the aminotriazine-aldehyde resin contacts the vinyl ester terminated bisphenol A epoxy resin, and functions as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin, and where the vinyl ester terminated bisphenol A epoxy resin has the structural formula:
- ##STR3## where each R is alkyl from 1 carbon to 6 carbons, and n is from about 1 to about 3.
A resin impregnated and resin coated, fibrous, cellulosic, heat and pressure consolidated, chemical resistant decorative laminate made of a plurality of cellulosic sheets and comprising:
- A. a bottom core layer impregnated with phenol-aldehyde resin,
- B. a middle layer impregnated with aminotriazine-aldehyde resin, and
- C. a top protective overlay layer impregnated at least about 1 mil deep and coated at least about 1 mil thick with vinyl ester terminated bisphenol A epoxy resin, where, the aminotriazine-aldehyde resin in the middle layer functions as a barrier to phenolic resin contact with the vinyl ester terminated bisphenol A epoxy resin, and where the vinyl ester terminated bisphenol A epoxy resin has the structural formula:
- ##STR7## where each R is alkyl from 1 carbon to 6 carbons, and n is from about 1 to about 3.
Dependencies are inferred from the claim text.