Particulate thermosetting adhesive compositions
AssigneeBTL Specialty Resins Corporation
InventorsMarcel Widmann, James H. Hickey
Life of this patent
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Abstract
Particulate thermosetting adhesive compositions exhibiting heat softening properties and capable of resisting penetration into porous substrates can be made at significantly lower cost than conventional adhesives by coating inorganic carrier particles with a previously prepared liquid thermosetting resin and spray drying the resulting mixture.
Claims19
An article of manufacture comprising a particulate thermosetting adhesive composition and a substrate, wherein said adhesive composition comprises individual free flowing finely divided discrete particles of substantially water insoluble inorganic particulate matter inert to and coated with a thermosetting resin comprising at least one aldehyde condensation product selected from the group consisting of phenol, resorcinol, melamine, urea, acetone, dicyandiamide, and mixtures thereof;
- and wherein the amount of particulate matter varies from about 1 to 240 parts by weight per 100 parts by weight of the solids content of the thermosetting resin.
In a method for bonding composite substrate materials with adhesive resins, the improvement which comprises:
- contacting the substrate materials with a particulate thermosetting adhesive composition comprising substantially water insoluble inorganic particulate matter inert to and coated with a thermosetting resin comprising at least one aldehyde condensation product selected from the group consisting of phenol, resorcinol, melamine, urea, acetone, dicyandiamide, and mixtures thereof;
- wherein the amount of particulate matter varies from about 1 to 240 parts by weight per 100 parts by weight of the solids content of the thermosetting resin.
Dependencies are inferred from the claim text.