地 址:湖北省襄阳市襄州区光彩台商工业园L1栋3楼
电 话:0710-3311159 13774177198
传 真:0710-3313754
邮 箱:qjuyd@126.com
diisopropanol-para-toliidine basic information |
|
Englishnames: |
diisopropanol-para-toliidine |
Englishsynonyms |
N, n-dihydroxypropyl p-toluidine N, N-bis (2-hydroxypropyl) p-toluidine N, N-bis (2-hydroxypropyl) p-toluidine Dihydroxypropyl p-toluidine Marble glue accelerator |
CAS no.: |
38668-48-3 |
Molecular formula: |
C13H21NO2 |
molecular weight: |
223 |
Product pictures: |
|
|
|
diisopropanol-para-toliidine Physical properties |
|
Melting point |
106 — 110 °C(lit.) |
appearance |
White acicular crystals |
Storage conditions |
Store in dark, 2-8°C |
period of validity |
180 days |
diisopropanol-para-toliidine Purpose and synthesis method |
|
Use |
N, N-diisopropyl alcohol to toluidine chemical stability, no odor, no irritation, low toxicity, convenient storage and transportation. It has high activity and good solubility with monomers. It is suitable for curing acrylic vinegar or other olefin monomers at room temperature. It is a promising new polymerization promoter. Because of the addition of organic peroxide in methyl methacrylate MMA monomer, At the same time add tertiary amines, immediately REDOX reaction, a few minutes later that curing. Oxidation - reduction initiation systems have low activation energy and can generate activation centers at room temperature. It is a short chain dialcohol, as polyurethane elastomer, reaction injection molding and other polyurethane products chain extender, not only good compatibility with other raw materials, and the prepared polyurethane products have excellent mechanical properties. It is an enhanced chain extender. Used for unsaturated resin polymerization, can enhance the degree of cross-chain, with network structure, so that the polymerization of fastness and toughness greatly enhanced, shear resistance and resistance to enhance the ability. Is the production of marble gum and other unsaturated resin accelerator, can replace N,N- dimethylaniline. |
application |
1.In 1936, Rohm & Hess company sold organic glass, methacrylate and acrylic vinegar were used as denture base materials, in 1942, Depep (Depep) and in 1949, German Kulezr company sold in the market to fill caries. DHT is tasteless, odorless, stable in performance, simple in synthesis process, easy to obtain raw materials, low in cost, and low in toxicity. Using DHT generation DMT(methyl methacrylate 100 parts, bisphenol A bismethacrylate 6 parts, dimethyl p-toluidine 0.5 parts, UV327 ultraviolet absorption of 0.4 parts, 2, 6-di-tert-butylp-methylphenol 0.02 parts) prepared self-setting denture, In terms of self-setting time, deflection test, thermal stability, uv discoloration resistance test, etc., it conforms to the international standards of the American Dental Association (A, D, A, S).
Two pieces of 30x30mm casting plate with a thickness of 20mm are arranged into a 3mm gap, and the three sides around it are sealed with cellophane. After adding quantitative DHT and BPO, the plate is decompressed and defoamed and then injected between the two plates. It is left standing at 23℃ for 20 hours and heated at 80℃ for 6 hours, and the thickness of the plate is 43 mm. Adhesion part without bubbles, transparent and no coloring, the end face of the processed plate and the original plate almost no boundary line. 4.Room temperature curing adhesive can be seen everywhere in daily life, the fastest development, is epoxy resin. According to the process characteristics of the adhesive in the range of 20~30℃ curing adhesive called room temperature curing adhesive. Acrylic structural adhesive is also a room temperature curing adhesive, which includes the first generation of acrylic structural adhesive, the second generation of acrylic structural adhesive (graft copolymerization) and the third generation of acrylic structural adhesive (radiation polymerization). The second generation of room temperature quick curing acrylic structural adhesive introduced here has the tendency to replace epoxy resin because of its excellent impact strength and other aspects. It was put into the market abroad in 1975. Dupont Pont Is made in a mixture of 85 grams OF MMA, 15 grams of MAA and 2 grams of EDM. Dissolve 10 grams of chlorosulfonated polyethylene (cl 43%, soc 1234%), remove 50 grams of the resulting solution and add 1.5 grams of isopropylbenzene peroxide (CHP)0.5 grams DMA under stirring condition to generate graft copolymerization on the polymer, curing time within 20 minutes, shear force 2550Psi. It is worth mentioning that oxidants and accelerants must be used immediately after addition, which is practically inconvenient. However, polymeric, monomer and oxidizer can be used as liquid A, while accelerant can be added to the same composition instead of oxidizer as liquid B. Liquid A and liquid B are in A stable state. But A, B two liquid coated on the sticky object, after A short time to become A high adhesive strength of the miyue glue. For example, 300 grams of NBR dissolved in 70 grams of MMA, 50 grams plus 1 grams of BPO as liquid A, and another 50 grams plus 0.5 grams of DMT as liquid B were applied to the surface of the specimen. After 20 hours, the shear strength was 210 kg/cm 2. If DHT is used instead of DMT, the effect is the same. Structure of the second generation acrylic adhesive without solvent, anaerobic adhesive, such as heat resistance, impact resistance, chemical resistance adhesive performance is very good, the bonding surface requirement is not high, does not need special treatment, can fast curing at room temperature, suitable for the oil level and large area of adhesive, lower cost, is a development prospect of two-component mixed adhesive. |
Using the principle |
The promotion effect is better with pushing electron group benzene ring aromatic amines, such as N, N-dimethyl aniline (DMA),N, N-dimethyl p-toluidine (DMT),N, N-beta-n, N-dihydroxyethyl p-toluidine (DHET) and other tertiary amines. Accelerators can rapidly decompose oxidants such as benzoyl peroxide (BPO), shorten their half-life TL /2 and increase the polymerization rate. The accelerator is solid at room temperature, completely free of the unpleasant odor characteristic of amines, and hardly changes color, so it is suitable for the polymerization of general polymers. |
Product introduction |
Main applications: self - setting denture water, color glass production, separation layer casting, room temperature curing adhesive, etc |
Product advantages |
1: can be well dissolved in resin and solvent 2: non-toxic
3: No strong odor 5: curing ability 6: less heat release, smooth heat release, less volume shrinkage |
Quality standard |
Appearance of white block melt body
Content of 98.0% or higher
Moisture 1.0% or less |
provider |
language |
Xiangyang Meijun Machinery Technology Testing Co., LTD |
English |