Lubricating compositions for PVC or the like
AssigneeMorton Thiokol, Inc.
InventorJeffrey R. Hyde
Life of this patent
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Abstract
A lubricating composition for PVC or the like is provided by partially saponifying a triglyceride material, such as an animal tallow, with calcium hydroxide in the presence of at least about 10% water. The minor amount of oxidized polyethylene admixed with the saponified material maintains the resulting soap and esters in a homogeneous lubricating compositions. The lubricating compositions are particularly suitable for preparing rigid resin compositions.
Claims16
A process of preparing a lubricant useful for preparing a rigid poly(vinyl chloride) composition or the like, the method comprising mixing (1) a triglyceride material, (2) calcium hydroxide equivalent to between about 50% and 100% of the fatty acid content of said triglyceride material, (3) water at a level of at least about 10 wt. % relative to the total weight of said triglyceride material plus calcium cydroxide and (4) oxidized polyethylene having an acid number of between about 2 and about 50 at a level that achieves a weight ratio of (A) triglyceride material plus calcium hydroxide to (B) oxidized polyethylene of between about 95:5 and about 50:50;
- and heating said mixture to substantially react all of said calcium hydroxide with said triglyceride material, thereby producing a homogeneous lubricant composition.
A process of preparing a lubricant useful for preparing a rigid poly(vinyl chloride) composition or the like, the method comprising:
- mixing (1) a triglyceride material, (2) calcium hydroxide equivalent to between about 50% to 100% of the fatty acid content of said triglyceride material, and (3) water at a level of at least about 10 wt. % relative to the total weight of said triglyceride material plus calcium hydroxide;
- heating said mixture of triglyceride material, calcium hydroxide and water to substantally react all of said calcium hydroxide with said triglyceride material to produce a reacted mixture, and
- admixing, with said reacted mixture, oxidized polyethylene having an acid number of between about 2 and about 50 to achieve a weight ratio of (A) initial triglyceride material plus initial calcium hydroxide to (B) oxidized polyethylene of between about 95:5 and about 50:50, to emulsify said reaction mixture, thereby producing a homogenous lubricant composition.
Dependencies are inferred from the claim text.