Solvent system for electrostatic shade band deposition process

Details Solvent system for electrostatic shade band deposition process Solvent system for electrostatic shade band deposition process

1977-11-30

1979-02-13

Hoffman, james R.

Coating processes

Measuring, testing, or indicating

Thickness or uniformity of thickness determined

427 27, 427 29, B05D 104, B05D 506, B05D 724

Patent

active

041396529

ABSTRACT:
An electrostatic spray process for the formation of a shade band on a polymeric innerlayer for laminated safety glass is disclosed. The improvement comprises using a solvent system of N-lower alkyl-pyrrolidone and tetrahydrofuran. This solvent system combines high dye solubility for process efficiency with proper volatility for optimum aesthetic quality in the finished product.

REFERENCES:
patent: 2739080 (1956-03-01), Woodworth
patent: 2914373 (1959-11-01), Rieser
patent: 3008858 (1961-11-01), Blake et al.
patent: 3591406 (1971-07-01), Moynihan
patent: 3973058 (1976-08-01), Grover et al.

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