Three component stabilizer system for propylene polymers contain

Details Three component stabilizer system for propylene polymers contain Three component stabilizer system for propylene polymers contain

1975-09-25

1978-01-03

Derrington, James H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 458R, 260 458NT, 260 4585S, C08K 714

Patent

active

040666085

ABSTRACT:
A three component LTHA stabilizer system of distearyl thiodipropionate, tris(3,5-di-t-butyl-4-hydroxybenzyl isocyanurate, sold under the trademark Goodrite 3114 and cyclic neopentanetetrayl bis(octadecylphosphite), sold under the trademark Weston 618 particularly suitable for glass fiber reinforced homopolypropylene or acrylic acid grafted propylene polymers. Key parts of the invention include well defined ratios of the thioester and phenolic components and good dispersion of the glass fiber to achieve the desired stability. The stabilizer system is good for other acrylic acid grafted polypropylene polymers which include impact modifiers. Other grafting monomers can be substituted for the acrylic acid.

REFERENCES:
patent: 3437550 (1969-04-01), Paul
patent: 3849516 (1974-11-01), Plank

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