US1235721A - Paint and varnish solvent. - Google Patents

Description

JAMES S. PATTY, OF CHICAGO,

PANY, OF NEW YORK,

ILLINOIS, ASSIG-NOR TO CHADELOID CHEMICAL COM- N. Y., A CORPORATION OF WEST VIRGINIA.

PAINT AND VABNISH SOLVENT.

Specification of Letters Patent.

Patented Aug. '7, 1917.

No Drawing. Application filed June 13, 1912, Serial No. 703,522. Renewed June 11, 1917. Serial No. 174,172.

To all whom it may concern:

Be it known that 1, JAMES S. PATTY, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and. State of Illinois, have invented certain new and useful Improvements in Paint and Varnish Solvents, of which the following is a specification.

This invention relates to paint and varnish solvents, and is designed to provide a compound which will, when applied to the article to be cleansed, retain its liquid state for a sui'ficient time to entirely remove the varnish or paint.

It has beenfound that the best known solvents for paint or varnish are alcohol (U 11 011), and benzol or impure benzene (O H These elements, separately or in compound, preferably the latter, constitute solvents for any paint or varnis It has been found, however, that benzol and alcohol, having very rapid evaporating or volatilizing qualities, are transformed into a gas or vapor prior to the entire removal of the paint from the surface upon which they are acting. It is sirable to add an element or elements which will overcome this rapid evaporating characteristic of the benzol and alcohol. Ethyl or methyl palmitate has been found to overcome this rapid evaporating characteristic of benzol and alcohol, when mixed'therewith; but inasmuch as thepalmitate crystalllzes out when placed in solution in alcohol, it is desirable to so treatthe palmitate that the same will not crystallize out when mixed with alcohol.

Therefore the palmitate is heated with an oily substance such as a fat or an oil, preferably sperm oil, paraflin oil, or both. This oil acts upon the palmitate to produce a mixture which, when added to the benzol and alcohol solution, will prevent the crystallization of the palmitate.

Furthermore, in order to add to the cutting qualities of the mixture and also to aid in retaining the palmitate in solution, calcium phenolate, henyl salicylate, or both are then added to t e mixture.

therefore de- The elements heretofore described are compounded in the following manner and proportions:

Primarily the benzol and alcohol are mixed and the ethyl or methyl palmitate is heated with sperm oil or paraflin oil, or both, and then mixed with the mixture of benzol and alcohol. The calcium phenolate or phenyl, salicylate, or both, are then added to the mixture.

Benzol (C H Four quarts Alcohol (O H OH) Five quarts }palmitate One pound Sperm oil .Four ounces or Paraflin oil mgour oulnces ne an one- Calczlim phenolate; pounds Phenyl salicylate {3 3? 2 33 33:

Should the sperm oil and paraflin oil both be used in the compound, only two ounces of each are used, and if the calcium phenolate and the phenyl salicylate are both used, only three-quarters of a .pound of each ariiplaced in the mixture.

ving described my invention, what 'I claim as new and desire to secure by Letters Patent, is:

1. A com ound of the class described comprising a so vent,'an alkyl palmitate, and an oil, substantially as described.

2. A compound of the class described comprising a solvent, an alkyl palmitate, an oil, and a phenol compound, substantially as described.

. 3. A compound of the class described comprising benzol; alcohol; an alkyl palmitate; an oil; and a phenol compound, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES S. PATTY.

Witnesses:

J OSHUA R. H. Po'r'rs, BRAYTON G. RICHARDS.