Vegetable oil-based printing ink and method for producing same
OwnerWilliam A. Franksinventor
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Abstract
Vegetable oil-based printing inks having at least about 20 poises are formulated by admixing a vegetable oil-based printing ink vehicle having an effective amount of polymerized vegetable oil and an effective amount of unpolymerized vegetable oil sufficient to provide the vegetable oil-based printing ink with a viscosity of at least about 20 poises, and an effective amount of colorant to provide the vegetable oil-based printing ink with a predetermined color. Methods for reclaiming residual vegetable oil-based printing ink from a printing press and polymerizing the vegetable oil component of the vegetable oil-based printing ink vehicle are also disclosed.
Claims30
A vegetable oil-based printing ink having a viscosity of at least about 20 poises comprising an effective amount of vegetable oil-based printing ink vehicle and an effective amount of colorant sufficient to provide the vegetable oil-based printing ink with a predetermined color.
A method of reclaiming residual vegetable oil-based printing ink from a printing press during the cleaning of a printing press, comprising:
- a. applying unpolymerized vegetable oil to a printing press in an amount effective to dissolve residual vegetable oil-based printing ink therefrom thereby producing a contaminated printing ink comprising unpolymerized vegetable oil, residual vegetable oil-based printing ink and particulate matter;
- b. filtering the contaminated printing ink to remove particulate matter and provide a substantially particulate free residual printing ink;
- and
- c. admixing an effective amount of colorant with an effective amount of substantially particulate free residual printing ink to provide a residual vegetable oil-based printing ink having a predetermined viscosity and a predetermined weight percent of colorant.
A method for polymerizing vegetable oil to provide a substantially oxygen free polymerized vegetable oil having a viscosity of at least about 20 poises, comprising:
- introducing unpolymerized vegetable oil into a first reactor;
- heating the unpolymerized vegetable oil under vacuum in the first reactor to a predetermined temperature for a period of time effective to remove entrained oxygen from the unpolymerized vegetable oil and produce a substantially oxygen free unpolymerized vegetable oil;
- introducing the substantially oxygen free unpolymerized vegetable oil into a second reactor;
- and
- heating the substantially oxygen free unpolymerized vegetable oil under vacuum in the second reactor to a predetermined temperature for a period of time effective to polymerize the substantially oxygen free unpolymerized vegetable oil and produce a substantially oxygen free polymerized vegetable oil having a viscosity of at least about 20 poises.
A method of polymerizing vegetable oil to provide a substantially oxygen free polymerized vegetable oil having a viscosity of at least about 20 poises, comprising heating unpolymerized vegetable oil under vacuum to a predetermined temperature for a period of time effective to remove entrained oxygen from the unpolymerized vegetable oil and to polymerize the unpolymerized vegetable oil and produce a substantially oxygen free polymerized vegetable oil having a viscosity of at least about 20 poises.
Dependencies are inferred from the claim text.