PROCESS FOR ESTHERZATIO N, HYDROXIMETILIZATION AND HARDENING OF PINE RESINS

PROCESS FOR ESTHERZATIO N, HYDROXIMETILIZATION AND HARDENING OF PINE RESINS

Carboxyl gps. of rosins are partially or completely esterified into prods. of low acid values at 150-200 deg.C with xylene-formaldehyde resins contg. higher than 40% ester linkage distributions. Rosin carboxy gp. to resin ester link molar ratio is: 0.1-2:1. Rosins are also esterified at 150-200 deg....

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Bibliographische Detailangaben
Hauptverfasser: LAKY,JANOS,HU, WEBER,TAMAS,HU, VARGA,TIBOR,HU, STARCSEVICS,ATTILA,HU, KOCSARDI,JANOSNE,HU, CSIKOS,REZSOE,HU, FARKAS L.,PETER,HU, NAGY KASZAP,LASZLO,HU, PAP,DEZSOE,HU, BAROSS,BALINTNE,HU
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVES
CHEMISTRY
DRIERS (SICCATIVES)
DRYING-OILS
DYES
FRENCH POLISH
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
TURPENTINE
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Beschreibung
Zusammenfassung:Carboxyl gps. of rosins are partially or completely esterified into prods. of low acid values at 150-200 deg.C with xylene-formaldehyde resins contg. higher than 40% ester linkage distributions. Rosin carboxy gp. to resin ester link molar ratio is: 0.1-2:1. Rosins are also esterified at 150-200 deg.C with xylene-formaldehyde resins contg. acetal-link distributions greater than 50%, at a rosin to resin wt. ratio of 0.1-1.5; and are hydroxy methylated simultaneously. Conversely rosin is esterified and hydroxy methylated with xylene-formaldehyde resin contg. a combined ester+acetal linkage distribution of over 90%. Simultaneously, the prepn. is polycondensed into prods. of over 150 deg.C softening pts. - (-pp Dwg.No.0/0)