Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1979-09-07
1980-11-18
Phynes, Lucille M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 459NC, 525398, 528266, 546184, 546188, 546190, C08K 516, C08G 1226
Patent
active
042344719
ABSTRACT:
By reacting polyalkyl-piperidones-4 with the 0.5- to 1.1-molar amount of formaldehyde in the presence of an aliphatic monoalcohol at 50.degree. to 180.degree. C., polymers of a polymerization degree of from 2 to about 200 are obtained, which may be hydrogenated or partially hydrogenated. Especially in this form, they are suitable as light stabilizers for synthetic polymers and as intermediate products for the preparation of other stabilizers for plastic materials.
REFERENCES:
patent: 4139520 (1979-02-01), Ramey et al.
patent: 4154722 (1979-05-01), Malherbe et al.
Korbanka Helmut
Pfahler Gerhard
Wiezer Hartmut
Hoechst Aktiengesellschaft
Phynes Lucille M.
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