1,4-Cyclohexanedimethanol NEW

CAS:	105-08-8
MF:	C8H16O2
MW:	144.21
EINECS:	203-268-9
Product Categories:	Alkohols;fine chemicals
Mol File:	105-08-8.mol

1,4-Cyclohexanedimethanol Usage And Synthesis

Chemical Properties	1,4-cyclohexanedimethanol is a white waxy solid or clear colourless viscous liquid after melting. Melting point 43°C(cis), 70°C (trans). The sublimation temperature is 160°C, miscible with water and alcohol, soluble in ketone, almost insoluble in aliphatic hydrocarbon and ether.
Characteristics	1,4-Cyclohexanedimethanol (CHDM) is both hard and flexible, with high TG, and offers excellent heat stability, good solubility, and good weather resistance. It can enhance the reactivity in polyester compounds, and improve the hydrolytic stability, plasticity, gloss, transparency, printability, and processing ability of the polymer.
Uses	1,4-cyclohexanedimethanol is used to make polyester fiber, polyester electrical appliances, unsaturated polyester resins, polyester glaze, polyurethane foam, as well as for the production of lubricants and hydraulic fluids.
Preparation	In the first step, proline-catalyzed formal [3+1+2] cycloaddition of formaldehyde, crotonaldehyde, and ethyl acrylate affords ethyl 4-formylcyclohex-3-enecarboxylate (compound 1) by a domino Mannich condensation and Diels–Alder (D–A) process. synthesis of 1,4-Cyclohexanedimethanol (CHDM) and CHDA from compound 1. Cu-based catalysts have been widely used for the hydrogenation of esters to alcohols. compound 1 can be hydrogenated to CHDM over commercially available Cu/Zn/Al catalyst. Under the optimized reaction conditions (240°C, 4.0 MPa of H2 , 12 h), a high yield (84%) of CHDM was achieved. After taking the optimized yield of compound 1 (91%) into account in the first step, the overall yield of CHDM starting from formaldehyde, crotonaldehyde, and ethyl acrylate, reached 76%.
Application	1,4-Cyclohexanedimethanol is a precursor to polyesters. It is one of the most important co-monomers for production of polyethylene terephthalate (PET), or polyethylene terephthalic ester (PETE). 1,4-Cyclohexanedimethanol has been used in the synthesis of polyketal copolymers. It was used as diol comonomer during the synthesis of polyester-carbonates based on 1,3-propylene-co-1,4-cyclohexanedimethylene succinate.
General Description	1,4-Cyclohexanedimethano is extensively used as cross-linking reagent in polymer industry.

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Hebei Mojin Biotechnology Co., Ltd, Our company is a professional in 4'-Methylacetophenone,Levamisole hydrochloride ,N-Methylformamide and other chemical reagents research and development production enterprises. Our business covers more than 30 countries, most of the big customers come from Europe, America and other countries in the world, we can guarantee the quality and price. In recent decades, with the efforts of all employees, we have established many cooperative companies in shandong, henan, guangdong and other places. Our corporate purpose is based on the market, enhance the strength, take the road of scientific and environmental sustainable development, relying on the country. Technology r & d center, increase the investment in r & d, based on the domestic market, expand the international market, manufacturing quality products, sincere service to the society, into a modern, ecological, scientific and technological enterprise world.

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