PROCEDE D'OBTENTION DES POUDRES TERMOADHESIVES

PROCEDE D'OBTENTION DES POUDRES TERMOADHESIVES

A multipurpose hot melt adhesive powder can be prepd. by copolymerising caprolactam with polyamine salts of one of the following acids: terephthalic, sebacic, and adipic of formula: H2N-(CH2-CH2-NH)n-H, where n=1...5 and with melamine and opt. with p-amino-benzoic acid. The copolymer thus obtd. is g...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: REZ TEODOR,RO, CIOBANU PIA,RO, GURAU RODICA I.,RO
Format: Patent
Sprache:fre ; rum
Schlagworte:
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
DYES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL
PAINTS
POLISHES
USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:A multipurpose hot melt adhesive powder can be prepd. by copolymerising caprolactam with polyamine salts of one of the following acids: terephthalic, sebacic, and adipic of formula: H2N-(CH2-CH2-NH)n-H, where n=1...5 and with melamine and opt. with p-amino-benzoic acid. The copolymer thus obtd. is ground together with ground dolomite which remains occluded in the finished product. The m.pt. of these powders ranges from 90-150 deg. C; the relative viscosity in conc. H2SO4 from 1.60 to 2.50; colour white to light yellow. Moisture absorption under 3%.