Alkylation of amines with alcohols catalyzed by palladium nanoparticles
摘要:
Palladium nanoparticles (PdNPs) generated in situ from the complex [(dippe)PdMe2] were used as efficient catalyst for the alkylation of amines by aliphatic alcohols using neat conditions, under hydrogen atmosphere. On using short chain alcohols, the reaction resulted in the generation of dialkylated and tri-alkylated amines in high yields (>80%). The use of bulky alcohols allowed the production of mono-alkylated products, also in high yield. (C) 2012 Elsevier B.V. All rights reserved.
Rubber composition containing silica or silicate and salt of an amine
申请人:BRIDGESTONE CORPORATION
公开号:EP1081187A2
公开(公告)日:2001-03-07
A rubber composition which comprises (A) at least one rubber component selected from the group consisting of natural rubber and diene synthetic rubbers, (B) an inorganic filler comprising at least one filler selected from silica and silicates as the main component and (C) an addition salt of an amine represented by general formula (I):
wherein R1 represents a C8 to C24 alkyl group, an aryl group or an aralkyl group, R2 and R3 represent a hydrogen atom, a C1 to C12 alkyl group, an aryl group, an aralkyl group or a hydroxyalkyl group and R4 represents a C6 to C24 alkyl or alkenyl group, an aryl group or an aralkyl group; and a pneumatic tire produced by using the rubber composition.
Fuel consumption of a pneumatic tire is decreased and workability and productivity in vulcanization in the production of a pneumatic tire are improved by using the rubber composition.
There are provided a rubber composition having a high modulus of elasticity and a good workability, and a pneumatic tire.
A rubber composition comprising at least one of natural rubber and synthetic diene rubbers as a rubber ingredient, at least one maleimide compound, and at least one nitrogen-containing compound selected from the group consisting of polyaniline, hydrazide, and amine compound is used in a tread.
Polymaleimide-containing rubber composition and tire
申请人:BRIDGESTONE CORPORATION
公开号:EP1199331A1
公开(公告)日:2002-04-24
A rubber composition comprises at least one rubber ingredient selected from natural rubber and synthetic rubbers, and a polymaleimide synthesized by reacting at least one of anhydrous maleic acid and anhydrous citraconic acid with methylene polyaniline.