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US 4,719,022 AGranted
Liquid lubricating and stabilizing compositions for rigid vinyl halide resins and use of same
AssigneeMorton Thiokol, Inc.
InventorJeffrey R. Hyde
Life of this patent
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AssigneeMorton Thiokol, Inc.
InventorJeffrey R. Hyde
Estimating the term…
Oils derived essentially from petroleum and which are liquids at ambient room temperature and meet a certain molecular weight/percent paraffin content parameter may be used as the only necessary external lubricants for rigid vinyl halide resin compositions when said oils are added to the resin compositions in sufficient quantity to permit satisfactory molding and extrusion of the resulting resin compositions. Such oils may also be employed to form liquid lubricating and stabilizing compositions for rigid vinyl halide resin formulations which lubricating and stabilizing compositions are liquids at ambient room temperature or at temperature of about 50.degree. C. or less. Rigid resin compositions containing such oils and/or liquid lubricating and stabilizing compositions are readily prepared and easily processed.
In a process for adding to rigid vinyl halide resin one or more processing, stabilizing and formulation additives the improvement comprising adding to the resin as substantially the only necessary external lubricant additive an oil derived essentially from petroleum, which oil is liquid at ambient room temperature and meets the criteria:
A rigid vinyl halide resin molding and extrusion composition containing one or more processing and formulation additives wherein substantially the only necessary external lubricant additive present in the composition consists of an oil derived essentially from petroleum, which oil is a liquid at ambient room temperature and meets the criteria:
A liquid lubricating and stabilizing composition for addition to rigid vinyl halide resin, which composition is liquid at a temperature of about 50.degree. C. or less, said composition comprising:
Dependencies are inferred from the claim text.