Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1980-09-05
1983-01-11
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528313, 528323, 528324, 528325, C08G 6916
Patent
active
043683185
ABSTRACT:
The method for preparing polydodecanamide or copolymers based thereon according to the present invention involves melting of .omega.-dodecalactam or a mixture thereof with amide-forming monomers and polymerization of the resulting melt at a temperature ranging from 180.degree. to 320.degree. C. in the presence of a catalyst and a molecular-mass regulator. According to the invention, prior to polymerization the resulting melt is filtered through a filtering bed comprising solid oxidized particles of .omega.-dodecalactam with an elemental content of oxygen of from 10 to 24% by mass.
REFERENCES:
patent: 3317482 (1967-05-01), Kunde et al.
patent: 4077946 (1978-03-01), Enenshtein et al.
Artsis Evgeny S.
Cheburashko Boris P.
Dobrokhtova Marina K.
Enenshtein Gennady A.
Evseev Bladimir A.
Adams Bruce L.
Anderson Harold D.
Burns Robert E.
Lobato Emmanuel J.
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