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US 5,308,648 AGranted
Spray application of plastics additives to polymers
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsWilliam D. Prince, George E. Keller, II, William A. Fraser, Pak S. Leung
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Abstract
A process for applying a polymer additive material to a polymeric substrate includes the steps of a) forming in a closed pressurized system a mixture of a solid polymer additive material, a suitable liquid carrier material, and a suitable viscosity reducing material, and b) spraying this mixture onto a polymeric substrate.
Claims7
A process for applying a polymer additive material to a polymeric substrate, comprising the following steps:
- A) forming in a closed pressurized system a mixture comprising:
- 1) at least one polymer additive material which is a solid under standard conditions of temperature and pressure;
- 2) at least one liquid carrier material capable of dissolving, suspending, or dispersing said polymer additive material;
- 3) at least one viscosity reducing material which is:
- i) a liquid under the pressure of said closed pressurized system,
- ii) at least partially soluble in said liquid carrier material,
- iii) present in said mixture in an amount which is effective to cause said mixture to have a viscosity which renders it sprayable, and
- iv) volatile under standard conditions of temperature and pressure, and
- B) spraying said mixture onto a polymeric substrate.
6 more elements
Dependencies are inferred from the claim text.