DE1131409B - Process for the production of high molecular weight polymers and copolymers of monoolefins - Google Patents

Description

GERMAN

PATENT OFFICE

F 28907 IVd / 39 c

REGISTRATION DATE: JULY 11, 1959

NOTICE
THE REGISTRATION
ANDOUTPUTE
EDITORIAL: JUNE 14, 1962

The subject of the main patent application F 27858 IVd / 39 c is a process for the production of high molecular weight polymers and copolymers of monoolefins, especially of ethylene, by polymerizing the monoolefins in the presence of catalysts made from aluminum trialkyls and Titanium or zirconium compounds and optionally in the presence of hydrogen, which is characterized is that you have a three-component catalyst from an aluminum trialkyl, a Titanium or zirconic acid esters and vinyl chloride, vinylidene chloride or a nitrile are used, with the vinyl chloride, vinylidene chloride or nitrile also subsequently during the polymerization Can add reaction mixture. Furthermore, for the production of copolymers, after adding the third catalyst component further monoolefins are introduced into the reaction mixture.

It has now been found that in the above-mentioned process according to the main patent application, the ao Aluminum trialkyls in whole or in part by aluminum alkyl hydrides can be replaced.

example 1

57.5 g of diisobutylaluminum hydride, 30.8 g of titanium tetrabutylate and 4.8 g of acrylonitrile are in 101 gasoline dissolved and treated with ethylene at 50 to 60 ° C for 3 hours. The pressure is a maximum of 5 atmospheres. The product obtained has a softening point of 200 ° C and begins to sinter at 135 ° C.

The reduced viscosity (measured in O, Ol% Decahydronaphthalene solution at 135 ° C) is 1.7, the yield 1116 g.

Example 2

28.7 g diisobutyl aluminum hydride, 40 g aluminum triisobutyl, 30.8 g of titanium tetrabutoxide and 4.8 g of acrylonitrile are dissolved in 101 gasoline and at 50 Treated with ethylene up to 60 ° C for 5 hours. The pressure is a maximum of 8 atmospheres. The product obtained has a softening point of 225 ° C and begins to sinter at 220 ° C.

The reduced viscosity (measured in O, Ol% Decahydronaphthalene solution at 135 ° C) is 9.7, the yield is 943 g.

Example 3

14.4 g diisobutyl aluminum hydride, 20 g aluminum triisobutyl, 13 ml of titanium tetrabutoxide and 1.56 g of acetonitrile are dissolved in 2.51 of gasoline and 6 hours treated with ethylene (maximum pressure 10 atmospheres) at 50 to 60 ° C. The polymerization product has

© 209 609/444 6. 62

Method of manufacture

of high molecular weight polymers

and copolymers of monoolefins

Addition to patent application F 27858 IVd / 39 c
(Interpretation document 1124 692)

Applicant:

Feldmühle paper and pulp mills

Corporation,
Düsseldorf-Oberkassel, Burggrafenstr. 7th

Dr. Theodor Ploetz, Hösel (district of Mettmann),

Dr. Hermann Richtzenhain, Cologne-Sülz,

Dr. Rudolf Modic, Lülsdorf via Troisdorf,

and Dr. Helmut from Fünten, Mondorf Siegkr.),

have been named as inventors

a softening point at 165 to 170 ° C and sintering at 130 ° C. The viscosity (measured in 0.01 ^fl / AIGER Dekahydronaphthalinlösung at 135 ° C) is 2.8 g, the yield 173rd

Claims (1)

PATENT CLAIM:
Further development of the process for the production of high molecular weight polymers and copolymers of monoolefins, especially of ethylene, by polymerizing the monoolefins, optionally in the presence of hydrogen, with the aid of a three-component catalyst composed of a trialkyl aluminum, a titanium or zirconic acid ester and vinyl chloride, vinylidene chloride or a nitrile, where the vinyl chloride, vinylidene chloride or nitrile can also be added to the reaction mixture subsequently during the polymerization, according to main patent application F 27858 IVd / 39 c, characterized in that the aluminum trialkyls are completely or partially replaced by aluminum alkyl hydrides. Considered publications:
British Patent No. 790 399.