| abstract |
Novel glycoluril derivs. of formula (I) are claimed: where n = 1-70, R1, R2 = H, 1-6C alkyl, 7-12C aralkyl; aryl or carboxylic acid ester, or R1+R2 = (CH2)4 or (CH2)5, R3-R6 = alkyl, X = a bond or bridging group, Y, Z = O, S or NR8, R7 = H, Cl, Br, OH, alkoxy, carboxyl, carboxylic ester, or substd. carbamoyl, or their NH4+ salts R8 = H or substd. alkyl. The use of (I) as stabilisers for organic materials is also claimed. Specifically, n = 1, R1, R2 = H, methyl or phenyl, R3 R6 = methyl, X-R7 = H, methyl, ethyl, propyl, butyl, allyl, hydroxy-methyl, acetyl, benzoyl or benzyl, Y, Z = O. |