Title: Method for printing interlayers for laminated safety glass

Abstract: Disclosed herein is an improved printing method for tinting synthetic resin sheets used in the manufacture of laminated safety glass. The improvement comprises using an ink containing 12 to 35% by weight, based on the total weight of dye and solvent, of one or more dyes dissolved in an N-lower alkyl-pyrrolidone solvent wherein the alkyl group contains from 1 to 4 carbon atoms.

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Inventors: Grover, John L. (Wilbraham, MA, US)
Power, Wilson H. (Wilbraham, MA, US)

Application Number: 535652
Filing Date: 1974-12-23
Publication_date: 1976-08-03
Assignee: Monsanto Company (St. Louis, MO)
Primary Class(es): 427/163.1 427/164, 427/256, 428/195.1, 428/210, 428/437
Other Classes:
US Patent Ref:

2739080	Mar, 1956	Woodworth	117/38.
2989360	Jun, 1961	Mautner	8/55.
3008858	Nov, 1961	Blake et al.	117/38.
3029122	Apr, 1962	Posselt et al.	8/46.
3088837	May, 1963	Prescott	106/262.
3265461	Aug, 1966	Luetzel et al.	8/84.
3346322	Oct, 1967	Finkenauer et al.	8/79.
3591406	Jul, 1971	Moynihan	117/37.

Other Refs:
Primary Examiner: Kendall, Ralph S.
Assistant Examiner:
Attorney: