Terpene-based solvents
AssigneeArizona Chemical Company
InventorsAlexander J. Conte, Bobby G. Johnson, Raymond H. Jones, Claude F. Phillips, Jr.
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Abstract
The specification discloses terpene-based solvent compositions which comprise diterpenes as a major component and a minor amount of monoterpenes. The mixtures exhibit solvent properties similar to monoterpenes but have flash points high enough to be classified as combustible rather than flammable materials.
Claims47
A terpene-based solvent composition consisting essentially of a terpene mixture containing from about 20 to about 35 wt. % monoterpene and from about 65 to about 80 wt. % diterpene.
A process for preparing a terpene-based solvent composition comprising:
- providing a reaction mixture which comprises an inorganic acid and at least one monoterpene having the molecular formula C.sub.10 H.sub.16 ;
- and
- dimerizing the mixture at a temperature and under conditions which are sufficient to produce a solvent composition consisting essentially of from about 20 to about 35 wt. % monoterpene and from about 65 to about 80 wt. % diterpene and having a flash point of at least about 60.degree. C.
A method for making a terpene-based solvent composition which consists essentially of:
- providing a reaction mixture comprising an inorganic acid and at least one monoterpene having the molecular formula C.sub.10 H.sub.16 ;
- and
- reacting the monoterpene/acid mixture at a temperature in the range of from 90.degree. to about 120.degree. C. and under conditions sufficient to produce a reaction product substantially free of higher terpene oligomers having molecular formulas greater than C.sub.20 H.sub.32 and consisting essentially of from about 20 to about 35 wt. % monoterpene and from about 65 to about 80 wt. % diterpene.
A method for making a terpene-based solvent composition having predetermined solvency properties in terms of a Kauri-butanol (Kb) value which consists essentially of mixing from about 20 to about 35 wt. % monoterpene having a first Kb value with from about 65 to about 80 wt. % diterpene having a second Kb value wherein the Kb value of the resulting mixture is within the range of from about 40 to about 150 and the flash point is above about 60.degree. C.
A composition which consists essentially of from about 20 to about 35 wt. % monoterpene and from about 65 to about 80 wt. % diterpene and having a flash point of at least about 60.degree. C. and a Kb value in the range of from about 50 to about 150.
Dependencies are inferred from the claim text.