Organic flatting agents and method of preparation

Details Organic flatting agents and method of preparation Organic flatting agents and method of preparation

1974-08-01

1976-03-09

Griffin, Ronald W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 14, 260 15, 260 22SQ, 260 22TN, 260 293, 260 294UA, 260838, 260840, 260844, 260848, 260849, 260851, 260854, C09D 352, C09D 356, C09D 366

Patent

active

039430804

ABSTRACT:
Solid organic inert flatting agents are prepared by reacting urea or phenol and formaldehyde in a basic aqueous medium to provide a prepolymer solution, then blending the prepolymer in the presence of a protective colloid-forming material, subsequently acidifying the basic prepolymer solution so that particles are formed and precipitated in the presence of a colloid-forming material, as spheroidal beads, and finally collecting and, if desired, drying the urea or phenol formaldehyde particulate beads. These beads have a high flatting efficiency and may be incorporated in resinous vehicles to provide compositions that produce low glass coatings of desirable properties.

REFERENCES:
patent: 3615792 (1971-10-01), Keene
patent: 3627713 (1971-12-01), Maruta et al.
patent: 3634347 (1972-01-01), Kao
patent: 3703487 (1972-11-01), Green et al.
patent: 3761433 (1973-09-01), High
patent: 3830782 (1974-08-01), Kempter et al.
Chatfield, Varnish Constituents, London, Leonard Hill Limited, 1953, pp. 345-353.
Singer, Fundamentals of Paint, Varnish, and Lacquer Technology, St. Louis, Mo., American Paint Journal Company, 1957, pp. 35-44.

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