Process for the production of pigment/plastic premixes

Details Process for the production of pigment/plastic premixes Process for the production of pigment/plastic premixes

1990-05-04

1992-05-19

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524706, 524783, 524785, 524836, 524847, 524855, 526 96, 526 97, 526101, 526103, 526104, 526106, 526107, 526123, 526129, 526156, 428407, C08K 900

Patent

active

051149907

ABSTRACT:
There is described a process for the production of pigment/plastic premixes characterized by homogeneous distribution of pigment in a polymer matrix. The invention is based on the polymerization of olefins carried out by means of a process using Ziegler catalyst. Significantly the polymerization occurs on the surface of the pigment particles, after the prior activation of the pigment particles.

REFERENCES:
patent: 3068185 (1962-12-01), Stamberger
patent: 3166542 (1965-01-01), Orzechowski et al.
patent: 3202645 (1965-08-01), Yancey
patent: 4564647 (1986-01-01), Hayashi et al.
patent: 4650747 (1989-03-01), Uno et al.
patent: 4665143 (1987-05-01), Ahluwalia et al.
patent: 4771086 (1988-09-01), Martin
N. W. Johnson et al. "Growth of Polymers from Substrates," Polym. Prep. Soc. Div., Polym. Chem., vol. 17, No. 2 p. 491 (1976).

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