Process for preparing thermally stable olefinic polymers

Details Process for preparing thermally stable olefinic polymers Process for preparing thermally stable olefinic polymers

1989-03-31

1990-10-02

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, 524102, 524103, 526204, C08K 534

Patent

active

049605933

ABSTRACT:
Thermally stable olefin polymers are obtained by addition, before or during polymerization, or after polymerization is substantially complete, but before quenching the catalyst, which terminates the polymerization reaction, of stabilizers of the HALS type ("Hindered Amine Light Stabilizer") of monomeric or oligomeric type, containing in the molecule one or more substituted piperidyl groups having formula: ##STR1## wherein R1 are the same or different from each other and are C.sub.1 -C.sub.4 alkyl radicals, tetramethylpiperidyl radicals, or the alkyl radicals, together with the piperidyl carbon atom to which they are bonded, form a C.sub.5 -C.sub.9 cycloalkyl radical; R.sub.2 are the same or different from each other and are hydrogen, C.sub.1 -C.sub.18 alkyl radicals, C.sub.7 -C.sub.18 aralkyl radicals, or said alkyl radicals together with the piperidyl carbon atom to which they are bonded, are a C.sub.5 -C.sub.10 cycloalkyl radical; R.sub.3 are the same or different from each other and are hydrogen, C.sub.1 -C.sub.18 alkyl radicals or C.sub.7 -C.sub.18 aralkyl radicals; R.sub.4 is hydrogen, a C.sub.1 -C.sub.8 alkyl radical or a benzyl radical; Z is hydrogen or an organic radical. Suitable organic radicals include C.sub.1 -C.sub.18 alkyl; C.sub.1 -C.sub.12 alkylene; C.sub.3 -C.sub.12 alkenyl; C.sub.3 -C.sub.5 alkenyl; C.sub.7 -C.sub.18 aralkyl; C.sub.2 -C.sub.4 acyl; C.sub.2 -C.sub.18 alkanoyl; C.sub.3 -C.sub.18 alkoxyalkyl; C.sub.3 -C.sub.18 alkenoyl; oxyl; cyanomethyl, and xylylenyl radicals; a radical having valence from 1 to 4 and containing from 1 to 4 hydroxyl groups and, optionally, containing ether, ester, or heterocyclic groups, all the valences of this radical being bonded to the nitrogen of the piperidyl rings; a bivalent radical containing one or more ester or amide groups, and a radical ##STR2## wherein R.sub.5 and R.sub.6 are hydrocarbyl radicals. Preferably Z is a C.sub.1 -C.sub.12 alkyl, C.sub.3 -C.sub.8 alkenyl, C.sub.7 -C.sub.11 aralkyl, or a bivalent radical containing one or more ester groups wherein the two valences of said radicals are bonded to piperidyl rings.

REFERENCES:
patent: 3925376 (1975-12-01), Chalmers
patent: 4104248 (1978-08-01), Cantatore
patent: 4107413 (1978-08-01), Giannini et al.
patent: 4107414 (1978-08-01), Giannini et al.
patent: 4146502 (1979-03-01), Yokoyama et al.
patent: 4177186 (1979-12-01), Rody et al.
patent: 4210612 (1980-07-01), Karrer
patent: 4226741 (1980-10-01), Luciani et al.
patent: 4233410 (1980-11-01), Rody et al.
patent: 4276401 (1981-06-01), Karrer
patent: 4294949 (1981-10-01), Karrer
patent: 4298718 (1981-11-01), Mayr et al.
patent: 4308362 (1981-12-01), Wiezer et al.
patent: 4311820 (1982-01-01), Nikles
patent: 4315859 (1982-02-01), Nikles
patent: 4321374 (1982-03-01), Morimura et al.
patent: 4331561 (1982-05-01), Luciani et al.
patent: 4356287 (1982-10-01), Loffelman
patent: 4369274 (1983-01-01), Thomas
patent: 4376836 (1983-03-01), Wiezer et al.
patent: 4386177 (1983-05-01), Loffelman
patent: 4435555 (1984-03-01), Loffelman et al.
patent: 4442250 (1984-04-01), Cantatone
patent: 4461898 (1984-07-01), Meier et al.
patent: 4550136 (1985-10-01), Husch
patent: 4583426 (1989-08-01), Chatterjee
patent: 4593064 (1986-06-01), Hosch
patent: 4731393 (1988-03-01), Karrer et al.
patent: 4824885 (1989-04-01), Magni et al.
Research Disclosure, 85-91, Aug. 1973.

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