Verfahren zum Verkleben von Holz und aehnlichen Werkstoffen

527,704. Adhesives. HENKEL & CIE GES. March 1, 1939, No. 6761. Convention date, April 12, 1938. [Class 121] [Also in Group IV] An adhesive for wood, &c., consists of a condensation product of melamine and an aldehyde together with a starch-conversion product. The condensate is prepared by he...

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1. Verfasser:	KOEHLER RUDOLF
Format:	Patent
Sprache:	ger
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DYES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES
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Zusammenfassung:	527,704. Adhesives. HENKEL & CIE GES. March 1, 1939, No. 6761. Convention date, April 12, 1938. [Class 121] [Also in Group IV] An adhesive for wood, &c., consists of a condensation product of melamine and an aldehyde together with a starch-conversion product. The condensate is prepared by heating melamine and formaldehyde in alcohol or acetone and evaporating to dryness in vacuo, The starch product may be a swelling starch or dextrin. Small quantities of acids, acid salts and salts may be added. In a typical example, 6 parts dextrin, 2 parts swelling starch, 2 parts melamine-formaldehyde condensate, 0.1 parts ammonium chloride are stirred with water and applied with heat and pressure.