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Catalyst and Auxiliary

Antioxidants UV absorbers Antioxidant Polyethylene glycol derivatives Fluorescent brightener Plastic rubber chemicals polymer Precious Metal Catalysts Coupling Zeolite Flame retardants Petrochemical Fluor reagent
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The catalyst can change the reaction rate in the chemical reaction, and the composition and the quality of the catalyst can be kept constant after the reaction. The catalyst that accelerates the reaction is called the positive catalyst, slows down called Negative Catalyst or slow agent. It said catalyst is a positive catalyst for the general correction. This kind of catalyst in the industry, especially the organic chemical industry used more, and has great significance, Such as sulfuric acid prepared by contacting, ammonia, hydrolysis of the ester and polysaccharide, Oil Hydrogenation, etc. Commonly used catalysts are mainly metal, metal oxide and inorganic acid. If the catalyst is solid, the substance of the reaction is gas, to form a multi-phase catalytic reaction, this catalyst, sometimes called catalyst or contact agent. The catalyst is generally selective, it can only make a reaction or a certain type of reaction to speed up. But some reaction can be used for a variety of catalysts, such as the hydrogenation reaction can often be platinum, palladium, nickel, should be carefully chosen. In the catalytic reaction, the catalyst is often added cocatalyst known to enhance catalytic action of the catalyst. For example, iron is a catalyst in ammonia industry, adding a small amount of potassium and aluminum can enhance the catalytic effect of iron. The composition and weight of the catalyst and cocatalyst cannot change before and after the reaction. All of the above are inorganic catalysts. The enzyme is a protein, is very important organic catalyst.

There are many kinds of catalyst, catalyst and reaction system according to the phase of the classification, there are two types of homogeneous and heterogeneous catalysts. Heterogeneous catalysts most widely used, there are 3 kinds of gas, liquid and solid state, the variety and application of solid catalyst. The solid catalyst, which is made of metal (nickel, platinum, palladium, chromium, cobalt, titanium, vanadium, etc.) or metal oxide (copper oxide, vanadium pentoxide, lead oxide), is dispersed and deposited on the carrier in order to obtain a good dispersion effect and increase the specific surface area. The catalyst requires reliable activity, stability, selectivity, long working life, not easy to poisoning and over-burning, easy to regenerate. In order to improve the catalytic efficiency, the pure metal catalysts are made into alloy catalysts (such as nickel aluminium alloy) and composite catalysts (ZieglerNatta). The composite catalyst is composed of main catalyst and co-catalyst. In the new efficient catalysts also add other components. The production and development of high efficiency catalyst have promoted the development of polymer materials, and produced much polymer function and structure material ,which is new generation of high performance and high added value.

With the extensive application of catalyst and a number of new catalysts, we can make a lot of new chemical reactions to achieve industrialization, in order to provide an increasing number of chemical products; also can make some of the original chemical reaction conditions have been improved, in order to improve the production efficiency and product quality, make full use of resources. The important subject in the field of modern chemistry and chemical research is to select and develop more and better catalyst for the new generation. But the role of a catalyst is not beneficial to humans, such as combustion products of supersonic jet fuel as a catalyst can cause the stratosphere (10 to 50 km altitude) decomposition of ozone in the atmosphere, to the sun's ultraviolet absorption decreased, resulting in some areas of skin cancer patients increased. Is developing a new supersonic jet fuel, its combustion products will not become a catalyst,which will cause the ozone decomposition catalyst in the stratosphere.

Additives are added in the industrial and agricultural production, especially in the chemical production of some of the auxiliary chemicals, its role is to improve the production process, improve product quality and yield, or to give the product a unique application performance.

Additive are large class of important chemical in the production of auxiliary raw materials, they can give a special performance to product, improve use of finished products; and can accelerate the chemical reaction rate, improve product yield; they can save raw materials, improve processing efficiency. Additives are widely used in the chemical industry, especially organic synthesis, synthetic material processing and petroleum refining, pesticide, medicine, dye, paint and other industrial sectors. Additives can be divided into synthesized additives and processing additives. Synthetic additives are used in monomer synthesis and polymerization of a variety of auxiliary agents in resin, fiber, rubber, etc. They include catalysts, initiators, solvents, dispersants, emulsifiers, polymerization inhibitors, regulators, termination agents, etc. Processing aid refers to the auxiliary chemicals used in the manufacture of raw rubber, plastics processing, chemical fiber spinning and spinning process, including plasticizers, heat stabilizers, antioxidants, light stabilizers , flame retardants, blowing agents, lubricants, mold release agents, curing agents, accelerators, softeners, anti-scorching agents, surfactants, oils, fillers, etc. In these additives, many of them are dangerous chemicals, Such as benzoyl peroxide, azobisisobutyronitrile, hydrogen peroxide - ferrous blue, alkyl aluminum chloride, titanium and other initiators, catalysts are inflammable and explosive materials, should be required to "chemical Dangerous Goods Safety Management Regulations", for storage, transportation, operation and use.

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Structure:
Chemical Name:
Biotin-PEG3-CH2COOH
CAS:
1189560-96-0
MF:
C18H31N3O7S
Chemical Name:
N3-PEG7-Mal
Structure:
Chemical Name:
Umicore CX33
CAS:
1380314-24-8
MF:
C78H64ClN2Pd
Chemical Name:
Molybdenum Disulfide Lithium Base Grease
Structure:
Chemical Name:
(η5-2,4-Cyclopentadien-1-yl)[(1,2,3-η)-1-phenyl-2-propenyl]-palladium 95%
CAS:
105333-10-6
MF:
C14H14Pd
Structure:
Chemical Name:
Sodium (R)-alpha-lipoate
CAS:
176110-81-9
MF:
C8H15NaO2S2
Structure:
Chemical Name:
1H-Imidazole polymer with 2-(chloromethyl)oxirane and morpholine
CAS:
109882-76-0
MF:
C10H18ClN3O2
Structure:
Chemical Name:
Methanesulfonato(tricyclohexylphosphine)(2'-aMino-1,1'-biphenyl-2-yl)palladiuM(II) dichloroMethane adduct
CAS:
1445086-12-3
MF:
C31H46NO3PPdS
Structure:
Chemical Name:
XantPhos-Pd-G2
CAS:
1375325-77-1
MF:
C51H42ClNOP2Pd
Chemical Name:
Alkyne-PEG-N3
Chemical Name:
Alkyne-PEG-OH
Chemical Name:
SH-PEG-COOH
Structure:
Chemical Name:
Allyl(cyclopentadienyl)palladium(II)
CAS:
1271-03-0
MF:
C8H10Pd
Chemical Name:
MPEG-CH2CH2COOH
Chemical Name:
Polyethylene glycol-G-azido
Structure:
Chemical Name:
Poly(dimethylsiloxane-co-methylphenylsiloxane)
CAS:
63148-52-7
MF:
C21H24O3Si3X2
Chemical Name:
Silane-PEG-COOH
Chemical Name:
DSPE PEG Biotin
CAS:
740794-01-8
Structure:
Chemical Name:
TRANS-DIAMMINEDINITROPALLADIUM(II)
CAS:
28068-05-5
MF:
H4N4O4Pd
Chemical Name:
CELLULOSE
CAS:
9012-19-5
MF:
(C6H10O5)n
Structure:
Chemical Name:
TAMRA-PEG4-alkyne
CAS:
1225057-68-0
MF:
C36H41N3O8
Chemical Name:
PTFE ultrafine powder
Chemical Name:
Sintering agent
Structure:
Chemical Name:
Methylamino-PEG3-azide
CAS:
1355197-57-7
MF:
C9H20N4O3
Chemical Name:
mPEG-SG(mPEG-Succinimidyl Glutarate ester )
Chemical Name:
Fmoc-NH-PEG-SH
Chemical Name:
Alkyne-PEG-IA
Structure:
Chemical Name:
NH-(PEG3-acid)2
CAS:
1814901-04-6
MF:
C18H35NO10
Chemical Name:
TAMRA-Azide-PEG-Biotin
CAS:
1797415-74-7
Structure:
Chemical Name:
Bromo-PEG6-azide
CAS:
2062663-64-1
MF:
C14H29BrN3O6+
Chemical Name:
mPEG-TCO
Chemical Name:
Methotrexate PEG DSPE
Chemical Name:
TCO PEG Biotin
Structure:
Chemical Name:
UV 144
CAS:
63843-89-0
MF:
C42H72N2O5
Chemical Name:
Biotin-PEG6-NH2
Chemical Name:
SH-PEG6-N3
Chemical Name:
IA-PEG4-Biotin
Structure:
Chemical Name:
Zinc N-Ethyl-N-phenyldithiocarbamate
CAS:
14634-93-6
MF:
C18H20N2S4Zn
Structure:
Chemical Name:
Polyaniline
CAS:
25233-30-1
MF:
C6H7N
Structure:
Chemical Name:
APA-1042
CAS:
647030-43-1
MF:
C41H38Cl2Zr
Chemical Name:
4-ArmPEG-(3COOH-1NH2)
Chemical Name:
Acetylthio-PEG-NH2
Chemical Name:
Biotin-PEG-FA
Chemical Name:
CLS-PEG-CHO
Chemical Name:
FITC-PEG-SC
Chemical Name:
NH2-PEG-Galactose
Chemical Name:
MAL-PEG-Palmitic acid
Chemical Name:
Ph-PEG-Ph
Chemical Name:
PLGA(5K)-PEG-COOH
Chemical Name:
PLGA(8K)-PEG-COOH
Chemical Name:
SH-PEG-SG
Chemical Name:
VE-PEG-NH2
Chemical Name:
Monostearin-PEG-COOH
Chemical Name:
Brominated SBS
CAS:
1195978-93-8
Chemical Name:
polyphenyl ether
CAS:
31533-76-3
MF:
C30H22O4
Chemical Name:
Palladium alumina catalyst
Chemical Name:
Mercapto silica gel metal adsorbent palladium removal reagent raw material palladium removal adsorbent
Chemical Name:
plasticized bisphenol A
Structure:
Chemical Name:
DOYLE DIRHODIUM CATALYST-RH2(4S-MEOX)4
CAS:
167693-36-9
MF:
C20H28N4O16Rh2
Structure:
Chemical Name:
N,N-Diethylpropargylamine
CAS:
4079-68-9
MF:
C7H13N
Structure:
Chemical Name:
Diphenylmethylidene(cyclopentadienyl)(9-fluorenyl)zirconium dichloride
CAS:
132510-07-7
MF:
C31H22.Cl2Zr
Chemical Name:
Carbomer 956
Chemical Name:
1,2-DISTEAROYL-PHOSPHATIDYLETHANOLAMINE-METHYL-POLYETHYLENEGLYCOL CONJUGATE
Chemical Name:
SA-PEG-FITC
Chemical Name:
ROYCO 64 ADVANCED SYNTHETIC MULTI-PURPOSE AIRCRAFT GREASE
Chemical Name:
Silane-PEG6-Biotin
Chemical Name:
SH-(CH2)11-PEG3-COOH
Chemical Name:
SH-PEG7-SH
Chemical Name:
OH-PEG-SS
Chemical Name:
Alkene-PEG-PLA(3K)
Chemical Name:
PLGA(10K)-PEG-Mal
Chemical Name:
Benzyl-PEG-OH
Chemical Name:
PLL-PEG-OH
Chemical Name:
PLGA(2K)-PEG-SC
Chemical Name:
Phosphoric acid-PEG-COOH
Chemical Name:
ASP-PEG-ASP
Chemical Name:
8-ArmPEG-(6Arm-Mal,2Arm-Biotin)
Chemical Name:
Cy3.5-PEG-Mal
Chemical Name:
mPEG-DMPE(ammonium salt)
Structure:
Chemical Name:
[1,3-bis[2,6-bis(1-ethylpropyl)phenyl]-4,5-dichloro-imidazol-2-ylidene]-dichloro-(3-chloropyridin-1-ium-1-yl)palladium
CAS:
1435347-24-2
MF:
C40H54Cl5N3Pd
Chemical Name:
PLA-PEG-MAL
Structure:
Chemical Name:
dimethyl (p-methoxybenzylidene)malonate
CAS:
7443-25-6
MF:
C13H14O5
Chemical Name:
Polyester
CAS:
113669-95-7
MF:
C4H10O2·
Chemical Name:
Micron ruthenium powder
Chemical Name:
OC Catalyst
Chemical Name:
Silicone gel for palladium removal
Chemical Name:
Petroleum resins
CAS:
68131-77-1
Structure:
Chemical Name:
Palladium(1+), [2'-(amino-κN)[1,1'-biphenyl]-2-yl-κC][2'-(diethylphosphino-κP)-N2,N2,N6,N6-tetramethyl[1,1'-biphenyl]-2,6-diamine-κN2]-, methanesulfonate (1:1)
CAS:
2195390-10-2
MF:
C33H42N3O3PPdS
Structure:
Chemical Name:
1H-Isoindole-1,3(2H)-dione, 2-(2,6-dioxo-3-piperidinyl)-4-[[2-[2-(2-propyn-1-yloxy)ethoxy]ethyl]amino]-
CAS:
2138439-56-0
MF:
C20H21N3O6
Structure:
Chemical Name:
Palladium, [μ-[1,1'-(1,4-butanediyl)bis[1,1-bis(1,1-dimethylethyl)phosphine-κP]]]dichlorobis(η3-2-propen-1-yl)di-
CAS:
2756973-33-6
MF:
C26H50Cl2P2Pd2
Chemical Name:
[mPEG-DSPE] 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxypoly(ethylene glycol)]
Chemical Name:
PTFE dispersion JF-4DCA
Structure:
Chemical Name:
Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate
CAS:
52829-07-9
MF:
C28H52N2O4
Structure:
Chemical Name:
(3aS,4S,6aR)-Hexahydro-2-oxo-N-(15-oxo-3,6,9,12-tetraoxa-16-azanonadec-18-yn-1-yl)-1H-thieno[3,4-d]imidazole-4-pentanamide
CAS:
1006592-45-5
MF:
C24H40N4O7S
Structure:
Chemical Name:
Tris[μ-[(1,2-η:4,5-η)-(1E,4E)-1,5-bis(4-methoxyphenyl)-1,4-pentadien-3-one]]di-palladium
CAS:
52552-56-4
MF:
C57H60O9Pd2
Chemical Name:
α-Allyl-ω-succiniMidyl poly(ethylene glycol)
Chemical Name:
α-ForMyl-ω-hydroxyl poly(ethylene glycol)
Structure:
Chemical Name:
XPhos Pd G3
CAS:
1445085-55-1
MF:
C46H62NO3PPdS
Chemical Name:
Silyl Acrylate Self-polishing Resin
Chemical Name:
O-(3-Carboxypropyl)-O'-[2-(3-MercaptopropionylaMino)ethyl]-polyethylene glycol Mw 5000
CAS:
1220112-75-3