Catalyst and Auxiliary

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 CAS MF
TS-1 TS-1
Liquid Terpene Resin Liquid Terpene Resin
Tinosorb S Tinosorb S
Methoxypoly(ethylene glycol) alkyne Methoxypoly(ethylene glycol) alkyne
Novel 2-arM Methoxypoly(ethylene glycol) aldehyde Novel 2-arM Methoxypoly(ethylene glycol) aldehyde
Y-shape poly(ethylene glycol) aMine Y-shape poly(ethylene glycol) aMine
Y-shape poly(ethylene glycol) MaleiMide Y-shape poly(ethylene glycol) MaleiMide
α-Acryloyl-ω-glycidyl poly(ethylene glycol) α-Acryloyl-ω-glycidyl poly(ethylene glycol)
α-Allyl-ω-carboxyl poly(ethylene glycol) α-Allyl-ω-carboxyl poly(ethylene glycol)
Polyethylene glycol mono(2-ethylhexyl) ether Polyethylene glycol mono(2-ethylhexyl) ether 26468-86-0 C24H50O9
α-Azido-ω-hydroxyl poly(ethylene glycol) α-Azido-ω-hydroxyl poly(ethylene glycol)
α-ForMyl-ω-Mercapto poly(ethylene glycol) α-ForMyl-ω-Mercapto poly(ethylene glycol)
α-Methacryloyl-ω-aMino poly(ethylene glycol) α-Methacryloyl-ω-aMino poly(ethylene glycol)
Poly(ethylene glycol) graft acrylate Poly(ethylene glycol) graft acrylate
PEG derivative PEG derivative
POLY(1,6-HEXANEDIOL/NEOPENTYL GLYCOL-ALT-ADIPIC ACID) POLY(1,6-HEXANEDIOL/NEOPENTYL GLYCOL-ALT-ADIPIC ACID) 25214-14-6 C17H36O8
Complex antioxidant Complex antioxidant
Antioxidant SP-C Antioxidant SP-C
vinyl function,phenyl resin vinyl function,phenyl resin
TRIMETHYLOLPROPANE ETHOXYLATE TRIMETHYLOLPROPANE ETHOXYLATE 50586-59-9 (C2H4O)n(C2H4O)n(C2H4O)nC6H14O
4-arM Poly(ethylene glycol) MaleiMide 4-arM Poly(ethylene glycol) MaleiMide
Methoxypoly(ethylene glycol) carboxyl acid Methoxypoly(ethylene glycol) carboxyl acid
Y-shape poly(ethylene glycol) Y-shape poly(ethylene glycol)
Y-shape poly(ethylene glycol) azide Y-shape poly(ethylene glycol) azide
α-Acryloyl-ω-Methacryloyl poly(ethylene glycol) α-Acryloyl-ω-Methacryloyl poly(ethylene glycol)
α-Azido-ω-succiniMidyl poly(ethylene glycol) α-Azido-ω-succiniMidyl poly(ethylene glycol)
α-Carboxyl-ω-Mercapto poly(ethylene glycol) α-Carboxyl-ω-Mercapto poly(ethylene glycol)
α-SucciniMidyl-ω-MaleiMidyl poly(ethylene glycol) α-SucciniMidyl-ω-MaleiMidyl poly(ethylene glycol)
Poly(Bisphenol A-co-epichlorohydrin) glycidyl end-capped Poly(Bisphenol A-co-epichlorohydrin) glycidyl end-capped 25036-25-3 C36H40O6
POLY(1-VINYLPYRROLIDONE)-GRAFT-(1-TRIACONTENE) POLY(1-VINYLPYRROLIDONE)-GRAFT-(1-TRIACONTENE) 136445-69-7
Octyl-phenolic curing resin Octyl-phenolic curing resin
Molecular sieve ZSM-5 Molecular sieve ZSM-5
Thermoset acrylic resin Thermoset acrylic resin
Fluorescent brightener PMB Fluorescent brightener PMB
Fatty acids, C18-unsatd., dimers, reaction products with polyethylenepolyamines Fatty acids, C18-unsatd., dimers, reaction products with polyethylenepolyamines 68410-23-1
STYRENE MALEIC ANHYDRIDE COPOLYMER STYRENE MALEIC ANHYDRIDE COPOLYMER 31959-78-1 C36H30O9X2
Antioxidant ZYB215,ZYB225 Antioxidant ZYB215,ZYB225
(chloromethyl)-oxiran reaction products with polyethylene glycol (chloromethyl)-oxiran reaction products with polyethylene glycol 72207-80-8 C3H5O2-(C2H4O)n-C3H5O
Benzenesulfonic acid, dimethyl-, polymer with formaldehyde, sodium salt Benzenesulfonic acid, dimethyl-, polymer with formaldehyde, sodium salt 70788-40-8 C9H12NaO4S
POLY(1-DECENE) POLY(1-DECENE) 68037-01-4 [CH2CH[(CH2)7CH3]]n
Polyethylene glycol monomethyl ether tosylate Polyethylene glycol monomethyl ether tosylate 58320-73-3 C10H14O4S
Poly(ethyl glycol) Bis(α-broMoisobutyrate) (PEGEBiB) Poly(ethyl glycol) Bis(α-broMoisobutyrate) (PEGEBiB)
4-ArM poly(ethylene glycol) acrylate 4-ArM poly(ethylene glycol) acrylate
4-arM Poly(ethylene glycol) carboxylic acid 4-arM Poly(ethylene glycol) carboxylic acid
Novel 2-arM Methoxypoly(ethylene glycol) azide Novel 2-arM Methoxypoly(ethylene glycol) azide
Novel 2-arM Methoxypoly(ethylene glycol) Methacrylate Novel 2-arM Methoxypoly(ethylene glycol) Methacrylate
Y-shape poly(ethylene glycol) thiol Y-shape poly(ethylene glycol) thiol
α,ω-DiMercapto poly(ethylene glycol) α,ω-DiMercapto poly(ethylene glycol)
POLY(OCTADECYL METHACRYLATE) POLY(OCTADECYL METHACRYLATE) 25639-21-8 C22H42O2
POLY(D,L-LACTIDE-CO-GLYCOLIDE) POLY(D,L-LACTIDE-CO-GLYCOLIDE) 26780-50-7 C10H12O8
TRI(PROPYLENE GLYCOL) PROPYL ETHER TRI(PROPYLENE GLYCOL) PROPYL ETHER 96077-04-2 C12H26O4
AMBERLITE(R) IRA-35 AMBERLITE(R) IRA-35 76930-03-5
Mayosperse 60 Mayosperse 60 31075-24-8 C10H24Cl2N2O
Fluorescent brightener  121 Fluorescent brightener 121 12224-11-2 C15H14ClN3O2S
P-BROMOSTYRENE RESIN P-BROMOSTYRENE RESIN 24936-50-3 C8H7Br
Fluorescent brightener PRA Fluorescent brightener PRA
Antioxidant T502A Antioxidant T502A
Fluorescent brightener NT-1 Fluorescent brightener NT-1
Hydroxyl-Modified Vinyl Resin CoPolyMers Hydroxyl-Modified Vinyl Resin CoPolyMers
Fluorescent brightener A Fluorescent brightener A
Fluorescent brightener PSD Fluorescent brightener PSD
Anti-corrosion coating Anti-corrosion coating
Polyethylene glycol dibutyl ether Polyethylene glycol dibutyl ether 31885-97-9 (C2H4O)nC8H18O
ACRYLONITRILE/BUTADIENE COPOLYMER ACRYLONITRILE/BUTADIENE COPOLYMER 68891-50-9 C21H27N3X2
POLY(N-ISOPROPYL ACRYLAMIDE) POLY(N-ISOPROPYL ACRYLAMIDE) 25189-55-3 C6H11NO
Poly(acrylamide-co-acrylic acid) Poly(acrylamide-co-acrylic acid) 9003-06-9 C6H9NO3
UV absorber 326 UV absorber 326
Fluorescent brightener PSM Fluorescent brightener PSM
Aluminium-titanium compound coupling agent Aluminium-titanium compound coupling agent
Polyethylene glycol dioleate Polyethylene glycol dioleate
Polyethylene glycol 400 monooleate Polyethylene glycol 400 monooleate
Fluorescent brightener APL Fluorescent brightener APL
Fluorescent brightener PB Fluorescent brightener PB C18H10N2O2S
Antioxidant MB-A Antioxidant MB-A C14H10N4S2Zn
Polyethylene glycol 400 dioleate Polyethylene glycol 400 dioleate
POLY(DIMETHYLAMINE-CO-EPICHLOROHYDRIN) POLY(DIMETHYLAMINE-CO-EPICHLOROHYDRIN) 25988-97-0 C5H12ClNO
POLYGLYCOLIDE POLYGLYCOLIDE 26124-68-5 C2H4O3
POLY(VINYL ACETATE-CO-CROTONIC ACID) POLY(VINYL ACETATE-CO-CROTONIC ACID) 25609-89-6 C8H12O4
POLY(ACRYLONITRILE-CO-VINYLIDENE CHLORIDE-CO-METHYL METHACRYLATE) POLY(ACRYLONITRILE-CO-VINYLIDENE CHLORIDE-CO-METHYL METHACRYLATE) 25214-39-5 C10H13Cl2NO2
POLY(4-METHYL-1-PENTENE) POLY(4-METHYL-1-PENTENE) 25068-26-2 C6H12
Trimethylolpropane propoxylate triacrylate Trimethylolpropane propoxylate triacrylate 53879-54-2 [H2C=CHCO2(C3H6O)nCH2]3CC2H5
3,6-Dimethyl-1,4-dioxane-2,5-dione homopolymer 3,6-Dimethyl-1,4-dioxane-2,5-dione homopolymer 26680-10-4 C6H8O4
Poly(ethylene glycol) graft carboxylic acid Poly(ethylene glycol) graft carboxylic acid
α-Methacryloyl-ω-Mercapto poly(ethylene glycol) α-Methacryloyl-ω-Mercapto poly(ethylene glycol)
FURFURYL ALCOHOL RESIN FURFURYL ALCOHOL RESIN 25212-86-6 C5H6O2
 Imidazole-epichlorohydrin copolymer Imidazole-epichlorohydrin copolymer 68797-57-9 C6H9ClN2O
POLY(ISOBUTYLENE-ALT-MALEIC ANHYDRIDE) POLY(ISOBUTYLENE-ALT-MALEIC ANHYDRIDE) 26426-80-2 C8H10O3
FORMYL POLYSTYRENE RESIN FORMYL POLYSTYRENE RESIN 55279-75-9 C7H5OR
POLY(METHYLSTYRENE-CO-INDENE) POLY(METHYLSTYRENE-CO-INDENE) 69430-35-9 (C45H78)n
Resin epoxy Resin epoxy 24969-06-0 C3H5ClO
Fluorescent Brightener 363 Fluorescent Brightener 363 95078-19-6
HYDROXYLATED ACRYLIC RESIN HYDROXYLATED ACRYLIC RESIN
PEG-15 COCOPOLYAMINE PEG-15 COCOPOLYAMINE 68584-77-0 (C12H27N.C6H17N3.C3H5ClO.(C2H4O)nH2O)x
STYRENE/ACRYLAMIDE COPOLYMER STYRENE/ACRYLAMIDE COPOLYMER 24981-13-3 C11H13NO
PPG-3 METHYL ETHER PPG-3 METHYL ETHER 37286-64-9 C7H16O3
Caspase 2 (ICH1, Nedd2), Apoptosis Detection, Colorimetric BioAssayª Caspase 2 (ICH1, Nedd2), Apoptosis Detection, Colorimetric BioAssayª
Base Oil Base Oil
THIAMPHENICOL THIAMPHENICOL 2393-92-2 C14H18Cl2N2O6S
Special solvent oil Special solvent oil
Antioxidant 2088 Antioxidant 2088
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