Mixtures of azodicarbonamide and .alpha.-amido- sulphones...

C - Chemistry – Metallurgy – 08 – J

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6/128, 48/47, 40

C08J 9/10 (2006.01)

Patent

CA 1150511

Abstract of the Disclosure A mixture of azodicarbonamide and an .alpha.-amldosulphone corresponding to the general formula: Image in which R represents hydrogen, a C1-C4-alkyl residue and/or halogen, x represents numbers from 0 to 5, represents numbers from 1 to 3, corresponding to v the valency of R1, R1 represents an aromatic carboxylic acid residue or sulphonic acid residue with 6 carbon atoms, which is optionally substituted once or several times by halogen, C1-C4 alkyl residues, C1-C4 alkoxy residues, nitro and/or cyano, or represents an aliphatic carboxylic acid residue or a sulphonic acid residue with 1-4 carbon atoms, a carbonic acid residue, a thiocarbonic acid residue or a phosphoric acid residue which, corresponding to the numerical value of y, contains 0-2 phenoxy residues or C1-C4 alkoxy residues optionally substituted with C1-C4 alkyl or halogen, R2 represents R1, or hydrogen, a C1-C4 alkyl residue, a C5-C7 cycloalkyl residue, a phenyl residue, which is optionally substituted once or several times by C1-C4-alkyl or halogen, a phenyl alkyl residue whose phenyl group is optionally substituted once or several times by C1-C4-alkyl or halogen and whose alkyl group has 1-3 carbon atoms or R1 and R2 together with the nitrogen atom form a cyclic lactam ring which has 4-5 carbon atoms, can be used as a blowing agent for rubber. Le A 19 550

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