Solid diacyl organic peroxide dispersions
AssigneeAkzo Nobel N.V.
InventorsBryce Milleville, Borys F. Schafran
Life of this patent
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Abstract
The present invention generally relates to solid diacyl organic peroxide formulations in liquid or paste form having improved thermal stability. The formulations generally comprise solid diacyl organic peroxide, a dispersing plasticizer having a solid organic peroxide solubility of from about 3-10%, a phlegmatizer vehicle having minimal or no solid organic peroxide solubility, and optional ingredients such as surfactants, thixotropic agents, mixtures thereof and the like.
Claims26
A stabilized dispersion in paste form with increased thermal stability which comprises:
- (1) diacyl peroxide, (2) at least one dispersing plasticizer, and (3) at least one phlegmatizing vehicle having minimal or no solid peroxide solubility, wherein the ratio of diacyl peroxide to dispersing plasticizer is in the range of about 7.1:1 to about 12:1.
A stabilized liquid dispersion with increased thermal stability which comprises:
- (1) diacyl peroxide, (2) at least one dispersing plasticizer, and (3) at least one phlegmatizing vehicle which comprises water and from about 10% to about 90% by weight of an aliphatic or aromatic hydrocarbon with a flash point of greater than about 100.degree. F., a melting point of less than about 68.degree. F. and a boiling point of greater than about 212.degree. F., adipates, oleates, phthalates or mixtures therefore, and optionally, at least one surfactant and at least one thixotropic agent, wherein the ratio of diacyl peroxide to dispersing plasticizer is in the range of 3.4:1 to 12:1.
A stabilized, non-aqueous liquid dispersion with increased thermal stability which comprises:
- (1) diacyl peroxide, (2) at least one dispersing plasticizer, and (3) at least one phlegmatizing vehicle having minimal or no solid peroxide solubility selected from the group consisting of aliphatic or aromatic hydrocarbon with a flash point of greater than about 100.degree. F., a melting point of less than about 68.degree. F. and a boiling point of greater than about 212.degree. F., adipates, oleates, phthalates and mixtures thereof.
Dependencies are inferred from the claim text.