Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1981-12-04
1983-07-12
Griffin, Ronald W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
260DIG19, 260DIG21, 5253293, 5253336, 525380, C09K 316
Patent
active
043931766
ABSTRACT:
A thermoplastic material formed from a hydrocarbon chain is modified to inhibit the production of static charges. The thermoplastic material may be a modified styrene or a polystyrene. A chemical agent is dispersed in the thermoplastic material and is provided with properties of combining with the carbon molecules in the modified styrene or the polystyrene. The chemical agent may be an amine. The amine is preferably ethoxylated.
The polystyrene may be a crystal styrene or a high impact styrene. The amount of the ethoxylated amine in the material is dependent to some extent upon whether the polystyrene is a crystal styrene or a high impact styrene.
The material of this invention may be formed as sheets as by extrusion or may be injection molded into different members such as panels. The material may be formed by mixing the ethoxylated amine and the polystyrene and extruding the mixture under conditions of controlled temperatures and pressures and for controlled dwell times.
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Bengal, Inc.
Griffin Ronald W.
Roston Ellsworth R.
Schwartz Charles H.
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