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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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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:
TETRAAMMINEPALLADIUM(II) ACETATE
CAS:
61495-96-3
MF:
C2H11N4O2Pd+
Structure:
Chemical Name:
BISPHENOL A DIGLYCIDYL ETHER RESIN
CAS:
25068-38-6
MF:
C15H16O2
Chemical Name:
POLYPHENYL ETHER (5 RINGS) OS-124, STAT. PHASE FOR GC
CAS:
31533-76-3
MF:
C30H22O4
Chemical Name:
ACA-PEG-NH2
Chemical Name:
GAS-PEG-GAS
Chemical Name:
8-arm-PEG-LA
Chemical Name:
Boc-NH-PEG-Alkyne
Chemical Name:
N3-PEG-COOH
Chemical Name:
Silane-PEG-N3
Chemical Name:
CH2CH2COOH-PEG-CH2CH2COOH
Chemical Name:
DMPE-PEG-CY3
Chemical Name:
DSPE-PEG-OPSS
Chemical Name:
Estrogen-PEG-Mal
Chemical Name:
FITC-PEG-Estrogen
Chemical Name:
Gala-PEG-SH
Structure:
Chemical Name:
Pomalidomide-PEG4-CO2H
CAS:
2138440-81-8
MF:
C24H31N3O10
Structure:
Chemical Name:
4-((2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethyl)amino)-2-(2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione
CAS:
2093416-31-8
MF:
C21H28N4O7
Structure:
Chemical Name:
2-(2H-Benzothiazol-2-yl)-6-(dodecyl)-4-methylphenol
CAS:
125304-04-3
MF:
C25H35N3O
Chemical Name:
Hydrogen transfer palladium carbon catalyst
Chemical Name:
Palladium hydroxide carbon catalyst
Chemical Name:
Gold bond alloy silver bond alloy palladium bond alloy copper bond alloy
Chemical Name:
Dsixty five
Chemical Name:
NA
Structure:
Chemical Name:
2-Allyloxy-1,3,5-tribromobenzene
CAS:
3278-89-5
MF:
C9H7Br3O
Chemical Name:
PEG400DA
Chemical Name:
cheMlok 205
Structure:
Chemical Name:
POTASSIUM TETRACYANOPALLADATE(II) TRIHYDRATE
CAS:
14516-46-2
MF:
C4H6K2N4O3Pd
Structure:
Chemical Name:
Xantphos Pd G3
CAS:
1445085-97-1
MF:
C52H46NO4P2PdS-
Chemical Name:
1,2-distearoyl-sn-glycero-3-phosphoethanolaMine-N-[biotinyl(polyethylene glycol)-2000] (aMMoniuM salt)
CAS:
385437-57-0
Chemical Name:
SH-PEG-SH
Chemical Name:
No.26white oil
Structure:
Chemical Name:
Bis-(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate
CAS:
129757-67-1
MF:
C40H80N2O6
Chemical Name:
NPC-PEG-NPC(NPC:4-nitrophenyl carbonate)
Structure:
Chemical Name:
Biotin-PEG-MAL
MF:
C24H37N5O6S
Chemical Name:
4-Arm PEG-Glutaric Acid
Structure:
Chemical Name:
DSPE-PEG-SH
MF:
C44H86NO10PS
Structure:
Chemical Name:
SPhos Palladacycle Gen. 4
CAS:
1599466-87-1
MF:
C40H50NO5PPdS
Structure:
Chemical Name:
Fluorescein-PEG6-Acid
CAS:
2055014-69-0
MF:
C36H42N2O13S
Chemical Name:
Estrogen PEG DSPE
Chemical Name:
Linoleic acid PEG NHS
Chemical Name:
Acryloyl PEG amine
Chemical Name:
Metal deactivator T551
Structure:
Chemical Name:
endo-BCN-PEG8-NHS ester
CAS:
1608140-48-2
MF:
C34H54N2O14
Chemical Name:
FMOC-NH-PEG10-NH2
Chemical Name:
mPEG-N+Me3
Chemical Name:
OH-PEG40-OH
Chemical Name:
PLA(2K)-PEG-OH
Chemical Name:
PLGA(18K)-PEG-Mal
Chemical Name:
STA-PEG-FA
Chemical Name:
SVA-PEG-SVA
Chemical Name:
SA-PEG-OH
Chemical Name:
Teflon micropowder lubricant
Structure:
Chemical Name:
POTASSIUM TETRABROMOPALLADATE(II)
CAS:
13826-93-2
MF:
Br4H4KPd-
Chemical Name:
Alkyne-PEG-Mal
Structure:
Chemical Name:
TETRAAMMINEPALLADIUM(II) TETRACHLOROPALLADATE(II)
CAS:
13820-44-5
MF:
Cl4H8N4Pd2
Chemical Name:
Metal deactivator T553
Chemical Name:
mPEG-SS-NHS
Structure:
Chemical Name:
Tetraamminepalladium(II) dichloride
CAS:
13815-17-3
MF:
ClH8N4Pd+
Structure:
Chemical Name:
2,2-BIS(2-HYDROXY-5-BIPHENYLYL)PROPANE
CAS:
24038-68-4
MF:
C27H24O2
Chemical Name:
Dopamine-PEG-Dopamine
Chemical Name:
8-arm-PEG-OPSS
Chemical Name:
FA-PEG-OH
Chemical Name:
mPEG-FITC
Chemical Name:
OPSS-PEG-MAL
Chemical Name:
PLGA-COOH
Chemical Name:
8-ArmPEG-(7Arm-COOH,1ARrm-NH2)
Chemical Name:
ACA-PEG-NH-Mal
Chemical Name:
Benzyl-PEG40-OH
Chemical Name:
CLS-PEG-NBD
Chemical Name:
COOH-PEG-NH2.HCl
Chemical Name:
DMPE-PEG-SC
Chemical Name:
DPPE-PEG-SC
Chemical Name:
FA-PEG4-Alkyne
Chemical Name:
mPEG-Anilin
Chemical Name:
N3-PEG-PAA(1.8K)-DA
Chemical Name:
PLGA(12K)-PEG-NH2
Chemical Name:
PLGA(2K)-PEG-COOH
Chemical Name:
STA-PEG-SC
Chemical Name:
DBCO-PEG8-amine
Chemical Name:
DBCO-PEG12-O-NH2
Chemical Name:
Benzyl-PEG18-Br
Chemical Name:
Fmoc-NH-PEG4-ACA
Chemical Name:
4-ArmPEG-NTA
Chemical Name:
4-ArmPEG-(3Alkyne-1NHS)
Chemical Name:
SH-PEG-SS
Chemical Name:
CHO-PEG-SCM
Chemical Name:
COOH-PEG-HZ
Chemical Name:
Biotin-PEG-Tretinoin
Chemical Name:
BOC-NH-PEG-SG
Chemical Name:
MTX-PEG-Mal
Chemical Name:
c(RGDyk)-PEG-SH
Chemical Name:
HZ-PEG-N3
Chemical Name:
Cy3.5-PEG-SH
Chemical Name:
NH2.HCl-PEG-NH2.HCl
Chemical Name:
Diethoxylsilane-PEG-NH2
Chemical Name:
DSPE(Sodium salt)-PEG-OH
Structure:
Chemical Name:
diamminebis(cyano-C)palladium
CAS:
15020-94-7
MF:
C2H6N4Pd