Boric anhydride solutions and their use as hardeners of resols

Details Boric anhydride solutions and their use as hardeners of resols Boric anhydride solutions and their use as hardeners of resols

1979-06-15

1981-06-09

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252432, 260 19N, 260 38, 528138, B01J 3102, B01J 2102

Patent

active

042724031

ABSTRACT:
Concentrated boric anhydride solutions containing more than 5% of boric anhydride in an organic solvent selected from mono or polyalcohols, trialkylborate and/or dialkylacetal when the solvent also contains an acid selected from sulfuric acid and/or aromatic acids. These solutions are used as hardeners of formo-phenolic resols, more particularly for the manufacture of laminates comprising glass fibers and formo-phenolic resols.

REFERENCES:
patent: 2413777 (1947-01-01), Oakley et al.
patent: 3306860 (1967-02-01), Rowell et al.
patent: 3347916 (1967-10-01), Huber
patent: 3679710 (1972-07-01), Forster
patent: 4123414 (1978-10-01), Millette

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