C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/540.1
C07C 231/22 (2006.01) C07C 233/09 (2006.01)
Patent
CA 2026439
The present invention relates to a composition of an N,N-dialkylaminoalkyl(meth)acrylamide of the following general formula (II), which has an improved storability and which contains an N,N-dialkylhydroxylamine of the following general formula (I) in an amount of from 10 to 10,000 ppm. (see fig. I) where R1 and R2 independently represent an alkyl group having from 1 to 4 carbon atoms. (see fig. II) where R3 represents a hydrogen atom or a methyl group; R4 and R5 independently represent an alkyl group having from 1 to 4 carbon atoms; and n represents an integer of from 2 to 4. The N,N-dialkylaminoalkyl(meth)acrylamide composition of the present invention forms an extremely reduced amount of a by-product of a crosslinking divnyl impurity, which is to have a bad influence on the properties of the polymerized polymer, -14- even when it is stored in a general condition where it is brought into contact with oxygen, and coloration of the composition during storage under such a general condition may also be retarded noticeably. Further, the composition may directly be applied to polymerization of using a general radical polymerization initiator with having no bad influence thereon.
Une composition de N,N-dialkylaminoalkyl(méth)acrylamide a la formule générale (II), dans laquelle R3 représente un atome d'hydrogène ou un groupe méthyle, R4 et R5 représentent chacun un groupe alkyle ayant entre un et quatre atomes de carbone, et n est un nombre entier entre 2 et 4. Cette composition a une conservabilité améliorée et contient entre 10 et 10.000 ppm d'une N,N-dialkylhydroxylamine ayant la formule générale (I), dans laquelle R1 et R2 représentent chacun un groupe alkyle ayant entre un et quatre atomes de carbone. Même lorsqu'elle est conservée dans des conditions ordinaires, en contact avec l'oxygène, cette composition présente beaucoup moins de décoloration et de formation de sous-produits, y compris d'impuretés divinyles réticulables qui affectent négativement les propriétés du polymère préparé avec cette composition. On peut polymériser cette composition avec un initiateur radical ordinaire de la polymérisation sans aucun effet négatif.
Hiroshi Oka
Takashi Maruyama
Yasutaka Doi
Borden Ladner Gervais Llp
Kohjin Co. Ltd.
Sumitomo Chemical Co. Ltd.
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