Chemical Auxiliaries

Chemical name: 2,4-Diethylthioxanthone CAS No.: 82799-44-8 Molecular formula: C17H16OS Molecular weight: 268 Molecular structure Specification Appearance: Yellow crystalline powder Purity, %: ≥ 99 Melting point, °C: 66 - 70 Volatility, %: ≤ 0.5 Application Photoinitiator DETX is a highly effective Type II photoinitiator. In conjunction with tertiary amine synergists, it is used to initiate radical polymerization of unsaturated oligomers e.g. acrylates and used in UV-curing coatings and inks. It can be used in combination with mono or multi functional monomers as reactive diluents. info at hhochem.com

Chemical name: 2,2-Dimethoxy-1,2-diphenylethan-1-one CAS No.: 24650-42-8 Molecular formula: C16H16O3 Molecular weight: 256.3 Molecular structure Specification Appearance: White crystalline powder Purity, %: ≥ 99 Melting point, °C: 64 - 67 Volatility, %: ≤ 0.5 Ash, %: ≤ 0.1 Application Photoinitiator BDK is a highly efficient UV photoinitiator. It is one of the economical photoinitiators. It is sensitive and has good absorption in 340nm band. It is compatible with unsaturated polyesters, acrylate monomers and oligomers used in UV-curable systems. It can be used in the UV curing system, such as unsaturated polyester, styrene primer and filler on the surface of wood or wood substitutes, acrylic ink and varnish on paper, metal and plastic surfaces, resist gloss and print. info at hhochem.com

Chemical name: 2-Hydroxy-2-methylpropiophenone CAS No.：7473-98-5 Molecular formular：C10H12O2 Molecular weight：164.2 Molecular structure Specification Appearance: Transparent yellow liquid Purity, %: ≥98.5 Transmittance, %: 425nm ≥ 98.0 500nm ≥ 99.0 Color: ≤100Hazen Volatility, %: ≤ 0.1 Ash, %: ≤ 0.1 Application Photoinitiator 1173 is a high efficiency UV photoinitiator and has the characteristics of low odor, non yellowing and good color stability. It can be conveniently combined with other photoinitiators.It is used in UV curing coatings and inks, clear coatings for wood, plastics and metal, overprint varnish. It is especially recommended for UV-curable coatings that require long-term exposure to sunlight and yellowing resistance. It is Highly efficient photoinitiator for UV curing system info at hhochem.com

Chemical name: 2-Methyl-4'-(methylthio)-2-morpholinopropiophe , none CAS No.: 71868-10-5 Molecular formula: C15H21NO2S Molecular weight: 279 Molecular structure Specification Appearance: White crystal powder Purity, %: ≥ 99 Melting point, °C: 73-76 Volatility, %: ≤ 0.25 Ash, %: ≤ 0.1 Transmittance (10g/100ml Toluene): 425nm ≥ 85% 500nm ≥ 95% Application Photoinitiator 907 is a high-efficiency photoinitiator which is mainly used in UV curing coating system and ink. It can keep coating system and ink from yellowing and prolong storage. It can be used for the color ink system, paper, metal, and plastic glazing and electronic ink. And it also can be used as UV absorbent for cosmetics and other industries. info at hhochem.com

Chemical name: Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide CAS No.:162881-26-7 Molecular formula:C26H27O3P Molecular weight: 418.46 Molecular structure Specification Appearance: Yellow crystal powder Purity (HPLC), %: ≥99 Melting point, ℃: 130 - 133 Volatility, %: ≤ 0.2 Acidity, mgKOH/g: ≤ 0.3 Clarity: Clear Application Photoinitiator 819 is a high effective UV photoinitiator, which is used to initiate the UV polymerization of unsaturated prepolymer system. It has been widely used in coatings, inks, adhesives and other industries for their excellent properties. It has great absorption in the ultraviolet and visible regions, and can initiate curing more effectively than other photoinitiators for coatings containing pigments. It hardly yellows after curing and long-term light radiation, so it can be used in occasions where yellowing requirements are stricter, such as white, light ink and paint. In addition, it has bleaching effect on light, which can penetrate the coating and help the thick film to be cured thoroughly. info at hhochem.com

Chemical name: Bis(2,6-difluoro-3-(1-hydropyrrol-1-yl)phenyl)tita , nocene CAS No.：125051-32-3 Molecular formular：C30H22F4N2Ti 10* Molecular weight： 534.4 Molecular structure Specification Appearance: Orange to yellow powder Purity, %: ≥99 Melting point, ℃: 160 - 170 Application Photoinitiator 784 is an extremely reactive, orange colored solid photoinitiator for radical olymerisation of unsaturated resins upon exposure to visible light (daylight) or UV light. It has a wide absorption in UV spectrum with the typical absorptions at 390 & 460 nm and the absorption extends to 500 nm. It is especially suited for the curing of photopolymers for imaging or information storage applications. It may be used in UV curable formulations for clear and for pigmented coatings on wood, metal, plastic, paper and optical fibers as well as for printing inks. Its unique absorbance properties together with its outstanding reactivity make it especially suited for use in photopolymers, e.g. resists, printing plates and other information storage devices such as optical layers, holograms, laser direct imaging, stereolithography. Curing can be performed either using UV light, visible light (blue-green part of the spectrum) or even light from suitable laser devices, e.g. Ar-Laser (488nm) or FD-Nd/YAG-Laser (532nm). Best performance is obtained if oxygen is excluded from the resin system during curing. info at hhochem.com

Chemical name: 2-Dimethylamino-2-(4-methyl-benzyl)-1-(4-morpholin , -4-yl-phenyl)- butan-1-one CAS No.: 119344-86-4 Molecular formula: C24H32N2O2 Molecular weight: 380.5 Molecular structure Specification Appearance: Pale yellow crystal Purity, %: ≥ 98.5 Melting point, °C: 87 - 93 Loss on drying, %: ≤ 0.25 Ash, %: ≤ 0.1 Application Photoinitiator 379 has good curing effect in tint/dark pigments, good solubility in acrylate solution and has good dispersibility. Applicable to mixed liquids: good versatility in formulations of various color systems, high efficiency in application of dark thick film coatings; can be used as ink additives in high efficiency/high performance printing process; excellent film performance. Its red- shifted adsorption spectrum makes it especially suitable for UV curable inks. It can be used alone or in combination with suitable co-initiators, such as 184, 651 or ITX etc. info at hhochem.com

Chemical name: 2-Benzyl-2-(dimethylamino)-4'-morpholinobutyro , phenone CAS No.: 119313-12-1 Molecular formula: C23H30N2O2 Molecular weight: 366.5 Molecular structure Specification Appearance: Slightly yellow powder Purity, %: ≥ 99 Melting range, °C: 110 - 119 Volatility, %: ≤ 0.3 Application Photoinitiator 369 is a highly efficient photoinitiator which combines fast cure response in dark colors, low migration and reduced odor on UV exposure. It is used for the photopolymerization of free radicals. It is used in UV curing inks and coatings. It is very suitable for the curing of UV colored system, especially the blue and black color phase system UV curing, and even the systems containing ultraviolet absorbents. It is also applied to the offset printing, silk screen printing ink, printing plates etc. It can be used in combination with other photoinitiators such as 184, 651, 907, ITX. info at hhochem.com

Chemical name: 1-Hydroxycyclohexyl Phenyl Ketone CAS No.：947-19-3 Molecular formular：C13H16O2 Molecular weight：204.26 Molecular structure Specification Appearance: White crystalline powder Purity, %: ≥99 Melting point, ℃: 46 - 49 Volatility, %: ≤ 0.2 Light transmittance, %: 425nm ≥ 98 500nm ≥ 99 Application Photoinitiator 184 has a high light triggered activity, good thermal stability and does not produce the yellowing. It is the most commonly used photoinitiator maximum absorption wavelength of 333nm. It is used as an effective UV curing initiator and non - variable yellow photoinitiator. It is widely used in copying varnish, plastic coatings, wood paints, and so on. It is added with other photopinitiator. info at hhochem.com

Chemical name: Propanedioic acid, [(4-methoxyphenyl)-methylene]-dimethyl ester CAS No.: 7443-25-6 Molecular formula: C13H14O5 Molecular weight: 250 Molecular structure Specification Appearance: White to crystalline powder Assay, %: ≥99 Melting point，℃: 55-59℃ Loss on Drying, %: ≤0.5 Transmittance: 425nm≥95% 500nm≥96% Application UV ABSORBER UV PR-25 exhibits excellent absorbtion especially in the UVB-range. It is colorless and even in high concentration in the resin does not lead to any discoloration. It doesn’t form colored complexes with metal ions. Recommended for use in PVC, polyesters, PC, polyamides, styrene plastics, EVA copolymers, and cellulosics, particular in rigid PVC materials.  It can be also used in solventborne coatings and general industrial coatings where stabilization requirements remain moderate.It is particularly recommended for UV cured systems and clear coats where colour neutrality is essential. info at hhochem.com

Chemical name: PP carrier 50% Hindered Amine 2,2,6,6-tetramethyl-4-piperidinyl stearate CAS No.(HALS)：167078-06-0 CAS No.(PP): 9003-07-0 Molecular structure Specification Appearance: White granule powder Content, %: 47.5 – 52.5 Ash, %: ≤0.5 Melting point, ℃: ≥28 Saponification value, mgKOH/g: 128-137 Transmittance, % 425nm≥90 450nm≥95 Solubility Insoluble in water and toluene etc. Application LIGHT STABILIZER UV3853PP5 is s a hindered amine light stabilizer(HALS) in concentrate form which contains 50% active in PP carrier for general use in automotive and injection molding applications. It is also suitable for broad range of polymers and applications, including PP film/tape/injection molding applications, TPO, and PE film/tape/injection molding. It is also can be used for polyacetals, polyamides, styrenic polymers, and PUR. The end use of it include PP and TPO automotive parts, TPO roofing membranes, PE crates, and PP outdoor furniture. info at hhochem.com

Chemical name: 2,2,6,6-tetramethyl-4-piperidinyl stearate CAS No.：167078-06-0 Molecular formular: C27H53NO2 Molecular weight：423.7 Molecular structure Specification Appearance: White waxy solid Purity, %: ≥ 99 Melting point, ℃: ≥ 28 Ash, %: ≤0.5 Saponification value, mgKOH/g: 128-137 Transmittance, % 425nm≥90 450nm≥95 Solubility Not soluble in water; Soluble in methylbenzene and some other organic solvent Application LIGHT STABILIZER UV3853 is a new type of hindered amine light stabilizer, which protects the plastic from the damage of UV light. It has excellent stability to the surface of plastic such as luster, pulverization, yellowing. It has good compatibility, no phenomenon of bloom nor migration. It has excellent synergy with other stabilizer, especially with HALS and uv absorber of high molecular weight. It is used for polyolefin plastics, PU, ABS resin, paint, adhesives, rubber, etc. info at hhochem.com

Chemical name: 2-(2'-Hydroxy-5'-methylphenyl)benzotriazol , e CAS No.：2440-22-4 Molecular formula:C13H11N3O Molecular weight: 225.3 Molecular structure Specification Appearance: White to yellowish crystal powder Melting point，℃:128-132 Assay (HPLC), %: ≥99 Ash, %: ≤0.1 Volatility, %: ≤0.5 Light transmittance, %: 440nm≥94% 500nm≥97% Solubility (20℃, g/100ml solvent) Acetone:3 Benzene:7 Butyl Acetate:3 Carbitol:2 Chloroform:13 Ethanol:0.2 Ethyl Acetate:3.5 n-Hexane:0.8 Cyclohexane:1 Methanol:0.2 Methylene Chloride:16 MEK:4 Styrene:7 Toluene:6 Water ＜0.01 Application UV ABSORBER HOSORB-UVP is a benzotriazole type ultraviolet light absorber (UVA). The max absorbing wavelength range is 270-380nm. It is widely used in a variety of polymers including polypropylene polycarbonate, polyethylene, polyurethane, unsaturated resin, ABS resin, epoxy resin, PMMA, PVC, elastomer, adhesive etc. It almost does not absorb visible light, especially for colorless and transparent products. info at hhochem.com

Chemical name: 2,2’-(1,4-phenylene)bis-4H-3,1-benzoxazin-4-one< , br>CAS No.：18600-59-4 Molecular formular：C22H12N2O4 Molecular weight：368.34 Molecular structure Specification Appearance: White to off-white crystalline powder Melting point，℃：≥310 Assay, %: ≥98 Ash, %: ≤0.1 Loss on Drying: ≤0.5 Application UV ABSORBER HOSORB-UV3638 is a highly efficient benzoxazinone type UV absorber, which is distinguished by its superior low volatility and strong & broad range of UV light absorption together with no color contribution & excellent stabilization for polymers. It is designed to meet the demanding high temperature requirements for processing engineering plastics such as Nylon, PC,PET,PBT and PPO. It is also highly effective in other polymers such as polyamides, polyacetals, polyolefins fibers, styrenics, elastomers where long term UV light stability is required. info at hhochem.com