초록

The present invention relates to a process for stabilizing organic polymeric materials comprising incorporating therein a benzofuran (2) one or indolin (2) one compound as stabilizer. Such stabilized polymeric materials are stabilized against degradation during the polymer processing.

대표청구항 ▼

A process for stabilizing organic polymeric materials comprising incorporating therein a stabilizing amount of a compound of formula Ic, [Figure] Ic in which either R is hydrogen, and R1 hydrogen; C1-22 alkyl; C5 or C6 cycloalkyl; C1-5 alkyl-C5 or C6 cycloalkyl; phenyl; phenyl substituted by one to

A process for stabilizing organic polymeric materials comprising incorporating therein a stabilizing amount of a compound of formula Ic, [Figure] Ic in which either R is hydrogen, and R1 hydrogen; C1-22 alkyl; C5 or C6 cycloalkyl; C1-5 alkyl-C5 or C6 cycloalkyl; phenyl; phenyl substituted by one to three substituents selected from the group consisting of C1-12－alkyl, hydroxy, C1-12 alkoxy, C1-18－acyloxy, chloro or nitro, with the provisos that: (1) when the phenyl ring contains more than one C1-12 alkyl group, said alkyl groups contain a maximum of 18 carbon atoms, (2) the maximum number of hydroxy substituents is two, and (3) the maximum number of each of the substituents selected from C1-12 alkoxy, C1-18 acyloxy, chloro and nitro is one; or a group of formula (a/4), (a/5) or (a/6) [Figure] (a/4) [Figure] (a/5) [Figure] (a/6) or R and R1 together form a group (a/2) [Figure] (a/2) either each of R2 to R5, independently, is hydrogen; C1-12 alkyl; C5 or C6 cycloalkyl; C1-5 alkyl-C5 or C6 cycloalkyl; C1-22 alkoxy; phenoxy; phenoxy substituted by one or two C1-12 alkyl groups, said alkyl groups having a maximum of 16 carbon atoms; C1-18 acyloxy; chloro; phenyl-C1-9 alkyl; phenylthio; phenyl-C1-9 alkyl or phenylthio substituted on the phenyl ring by one to three substituents selected from C1-12 alkyl, hydroxy and R15CO－O－; phenyl; phenyl substituted by one or two C1-12 alkyl groups, said alkyl groups having a maximum of 16 carbon atoms; nitro; 2-furanylcarbonyloxy; 2-thienylcarbonyloxy; a group of formula (b/2), (b/3) or (b/4) [Figure] (b/2) CH2SR12 (b/3) CH(C6H5)COOR7 or; (b/4) a group of formula (a/4) or (a/5) as defined above; with the provisos that: (a) a maximum of two of R2 through R5 is C5 or C6 cycloalkyl, C1-5 alkyl-C5 or C6 cycloalkyl, C1-22 alkoxy, phenoxy, substituted phenoxy, C1-18 acyloxy or chloro; and (b) a maximum of one of R2 through R5 is optionally substituted phenyl, phenyl-C1-9 alkyl or phenylthio, nitro, 2-furanylcarbonyloxy, 2-thienylcarbonyloxy or a group of formula (b/2), (b/3), (b/4), (a/4) or (a/5), provided that only the R3 substituent can be a group of formula (b/3) or (b/4) and only the R3 or R5 substituent can be a group of formula (a/5); or R2 and R3, together, form a condensed benzene ring, or R3 and R4, together, form a furan(2) one ring in which the 3-position bears the substituents R and R1 as defined above, or R4 and R5, together, form tetramethylene or a furan(2) one ring in which the 3-position bears the substituents R and R1 as defined above, and one of the two remaining substituents is hydrogen and the other is any one of the significances given for R2 to R5 above; either R6 is C1-18 alkyl; C5 or C6 cycloalkyl; C1-5 alkyl-C5 or C6 cycloalkyl; benzyl; (C6H5)2CH; phenyl; phenyl mono- or disubstituted by C1-12 alkyl, provided that when the phenyl ring contains more than one C1-12 alkyl group, said alkyl groups contain a maximum of 16 carbon atoms; phenyl monosubstituted by hydroxy; phenyl mono- or disubstituted by methoxy; phenyl monosubstituted by chloro; phenyl monosubstituted by dimethylamino; 3,5-di-tertiary butyl-4-hydroxyphenyl; b2-furyl; or a group of formula (c/1) or (c/2) [Figure] (c/1) [Figure] (c/2) R6a is hydrogen; C1-18 alkyl; C5 or C6 cycloalkyl; C1-5 alkyl-C5 or C6 cycloalkyl; phenyl or benzyl; or R6 and R6a, together with the carbon atom to which they are bound, form an unsubstituted 5- or 6-membered aliphatic ring or a 5- or 6-membered aliphatic ring monosubstituted by C1-4 alkyl; each R7, independently, is hydrogen; C1-18 alkyl; alkyl-O-alkylene having a maximum of 18 carbon atoms; alkyl-S-alkylene having a maximum of 18 carbon atoms; di-C1-4 alkylamino-C1-8 alkyl; C5-7 cycloalkyl; phenyl; or phenyl substituted by one to three C1-12 alkyl groups, said alkyl groups having a maximum of 18 carbon atoms; either each R8, independently, is hydrogen; C1-18 alkyl; C5 or C6 cycloalkyl; C1-5 alkyl-C5 or C6 cycloalkyl; phenyl; phenyl substituted by one or two C1-12 alkyl groups, said alkyl groups having a maximum of 16 carbon atoms; or a group of formula (d/1), (d/2) or (d/3) CH2CH2OH (d/1) CH2CH2OC1-18alkyl (d/2) [Figure] (d/3) or both R8\s, together with the nitrogen atom, form an unsubstituted piperidine or morpholine ring; R9 has one of the significances of R8; R9a is hydrogen; C1-18 alkyl; or a group of formula (d/1), (d/2) or (d/3) as defined above; R11 is hydrogen; C1-22 alkyl; C5-7 cycloalkyl; phenyl; phenyl-C1-6 alkyl; or phenyl or phenyl-C1-6 alkyl substituted on the phenyl ring by one or two C1-12-alkyl groups, said alkyl groups having a maximum of 16 carbon atoms; R12 is C1-18 alkyl; 2-hydroxyethyl; phenyl; or C1-9 alkylphenyl; R15 is C1-22 alkyl or phenyl; and n is 0, 1 or 2.