Coded polymeric material and method

Details Coded polymeric material and method Coded polymeric material and method

1979-11-05

1984-02-14

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

2524081, 524403, C08K 334

Patent

active

044317662

ABSTRACT:
Polymeric materials, for example, vinyl materials contain an added trace amount of a compound which is detectable by an instrumental method of analysis in the absence of the step of freshly exposing a surface of the sample and without substantial interference from other ingredients in the vinyl material. The incorporation of the added trace compound allows for coding of the material and provides a means to later identify the manufacturer of the film without the need to affix more visible identification means thereto.

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patent: 3835782 (1974-09-01), Griffith et al.
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patent: 3897284 (1975-07-01), Livesay
patent: 3912927 (1975-10-01), Rush et al.
patent: 4053433 (1977-10-01), Lee

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