ALKYD RESIN PRODUCTION PROCESS (OPTIONS) AND LACQUER MATERIAL BASED THEREON Russian patent published in 2005 - IPC

FIELD: polymer production.

SUBSTANCE: invention relates to production of modified alkyd resins widely used in varnish-and-paint industry as well as to lacquer materials based thereon for use as indoor and outdoor painting operations. Alkyd resin is obtained through alcoholysis of vegetable oils and optionally colophony with polyhydric alcohol (glycerol or pentaerythritol) in presence of catalyst, in particular mixture of lead and cadmium salts of saturated or unsaturated aliphatic C6-C18-monocarboxylic acid in the form of solution, in white spirit on heating, quantity of catalyst constituting 0.009-0.02% on the weight of components. Alcoholysis is followed by polycondensation of phenol resin based on alkylphenol and formaldehyde (at their ratio from 1:1 to 1:2) with dicarboxylic acid anhydride and modifier or using aromatic monocarboxylic acid in mixture with substituted aromatic monocarboxylic acid taken in specified proportions. Modified alkyd resins thus obtained serve as base for production of lacquer material containing a variety of fillers, pigments, siccatives, organic solvent, and, if necessary, thickener as well as various special additives (fire retardants, corrosion inhibitors, and the like). Resulting resins ate clear, with elevated content of volatiles, low acid number, rapidly drying, which enable manufacture of lacquer materials based thereon.

EFFECT: improved physicochemical properties of lacquer materials (hardness, elasticity).

3 cl, 4 tbl