Abstract:
The invention relates to a flame retardant composition, which comprises a) At least one ester of a phosphorus containing oxo acid selected from the group consisting of phosphonous and phosphorous acid; b) At least one flame retardant component based on a nitrogen compound; particularly melamine cyanurate, and c) A polyurethane polymer base.
Abstract:
The invention describes an improved method for the preparation of rubber compounds which comprises compounding the rubber and the components at 125 - 200°C in the presence of an amount of 0.1 - 2% based on the weight of the rubber of a processing stabilizer of the formula (I) wherein R1 is hydrogen, C1-C20alkyl, styryl, α-methyl-styryl or -CH2-S-R3; or C1-C20alkyl substituted with C2-C20alkenyl, C3-C20alkinyl, C5-C9cycloalkyl, phenyl or tolyl; R2 is C1-C20alkyl or -CH2-S-R3, R3 is C1-C20alkyl; with phenyl, hydroxyl, cyano, formyl, acetyl or -O-CO-R5 substituted C1-C20alkyl; C2-C20alkenyl, C3-C20alkinyl, C5-C9cycloalkyl; or with hydroxyl, phenyl, 4-chloro-phenyl, 2-methoxycarbonylphenyl, p-tolyl, 1,3-benzthiazol-2-yl, -(CHR5)nCOOR6 or -(CHR5)nCONR7R8 substituted C5-C9cycloalkyl; R4 is hydrogen or methyl, R5 is hydrogen or C1-C6alkyl, R6 is C1-C20alkyl; with oxygen or sulfur interrupted C3-C20alkyl; C5-C9cycloalkyl, phenyl, benzyl or tolyl, R7 and R8 are independently of each other hydrogen or C1-C6alkyl, and n is 1 or 2.
Abstract:
There are described compositions comprising a) an emulsion crude rubber, synthetic latex or natural rubber latex subject to oxidative, thermal, dynamic and/or light-induced degradation, b) a compound of the formula (I) wherein R1 is C8-C12alkyl, R2 is hydrogen, C1-C12alkyl, cyclohexyl, 1-methylcyclohexyl, benzyl, α-methylbenzyl, α,α-dimethylbenzyl or —CH2—S—R1, R3 is C1-C12alkyl, benzyl, α-methylbenzyl, α,α-dimethylbenzyl or —CH2—S—R1, R4 is hydrogen or methyl, and c) a styrenated diphenylamine of the formula (II).
Abstract:
The invention describes a composition comprising a) a naturally occurring or synthetic elastomer susceptible to oxidative, thermal, dynamic, light-induced and/or ozone-induced degradation, b) a white reinforcing filler, and c) as coupling agent, at least one compound of the formula (I) wherein the general symbols are as defined in daim 1, or an oligomeric hydrolysis product of the compound of the formula (I).