Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1991-07-12
1993-11-30
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524100, 524291, C08K 5524, C08K 53492, C08K 53435, C08K 53417
Patent
active
052666166
ABSTRACT:
This invention concerns a resin formulation for an organically pigment polyolefin resin suitable for tubing and pipe service. The resin formulation is comprised of ethylene polymers, a UV stabilizer, an antioxidant, and a tetrachloroisoindolinone pigment. The resulting resin possesses excellent heat stability and color fastness. The dilute concentration of organic pigment in the inventive formulation presents a cost acceptable alternative to the widely- and routinely-used cadmium- and lead-bearing dyes and pigments which are classified as toxic chemicals under SARA Title III Section 313.
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Two Sheets containing Ciba-Geigy technical information concerning IRGAZIN 2GLTE and 3RLTN pigments, Jul. 12, 1991.
Ciba-Geigy technical and sales information: Antioxidants for Polyolefins; Light Stabilizers for Polyolefins; Chimassorb 944 FL; and Chimassorb 119 FL. (1990).
M. Ahmed, Coloring of Plastics, Van Nostrand Reinhold Co. (1979), Ch. 3 and 5.
Modern Plastics Encyclopedia 90, Mid-Oct. Issue, pp. 168 and 171, 648-660.
Haag Gary L.
Hoke Veronica P.
Phillips Petroleum Company
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