Acrolein plastic

Acrobot See printing, Acrobot. acrolein plastic The simplest unsaturated aliphatic aldehyde. These thermoset plastics are colorless hut become colored above 170°C (338°F) and sinter at 220°C (428°F) without melting. Their physical and chemical properties depend more on conditions of preparation than is normally the case with other plastics. 

Other important uses of stannic oxide are as a putty powder for polishing marble, granite, glass, and plastic lenses and as a catalyst. The most widely used heterogeneous tin catalysts are those based on binary oxide systems with stannic oxide for use in organic oxidation reactions. The tin—antimony oxide system is particularly selective in the oxidation and ammoxidation of propylene to acrolein, acryHc acid, and acrylonitrile. Research has been conducted for many years on the catalytic properties of stannic oxide and its effectiveness in catalyzing the oxidation of carbon monoxide at below 150°C has been described (25). 

C09-0009. Acrolein. H2 CCHCHO, is used to manufacture polymers for plastics. Draw the Lewis stmcture of acrolein. 

Examples for necessary process improvements through catalyst research are the development of one-step processes for a number of bulk products like acetaldehyde and acetic acid (from ethane), phenol (from benzene), acrolein (from propane), or allyl alcohol (from acrolein). For example, allyl alcohol, a chemical which is used in the production of plasticizers, flame resistors and fungicides, can be manufactured via gas-phase acetoxylation of propene in the Hoechst [1] or Bayer process [2], isomerization of propene oxide (BASF-Wyandotte), or by technologies involving the alkaline hydrolysis of allyl chloride (Dow and Shell) thereby producing stoichiometric amounts of unavoidable by-products. However, if there is a catalyst... 

Acrolein enters the environment as a result of normal metabolic processes incomplete combustion of coal, wood, plastics, tobacco, and oil fuels and industrial emissions. Acrolein has been detected in smog, foods, and water. It is used extensively in chemical manufacture, for control of fouling organisms, and as an herbicide to control submerged weeds in irrigation canals. 

Chemical/Physical. Wet oxidation of acrolein at 320 °C yielded formic and acetic acids (Randall and Knopp, 1980). May polymerize in the presence of light and explosively in the presence of concentrated acids (Worthing and Hance, 1991) forming disacryl, a white plastic solid (Humburg et al., 1989 Windholz et al, 1983). 

Uses Manufacture of acrolein, allyl compounds, glycerol, plasticizers, resins, military poison gas contact pesticide for weed seeds and certain fungi intermediate for pharmaceuticals and other organic compounds herbicide. 

Some Monomers, Plastics and Synthetic Elastomers, and Acrolein... 

I ARC (1979) lARC Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans, Vol. 19, Some Monomers, Plastics and Synthetic Elastomers, and Acrolein, Lyon, pp. 285-301... 

ACRYLATES AND METHACRYLATES. A wide range of plastic materials that date back to the pioneering work of Redtenbacher before 1850, who prepared acrylic acid by oxidizing acrolein... 

Lawrence J. Esposito, Rliane-Poulenc. Cnmbttry. NJ, Vanillin W, G. Etzknrn, Union Carbide Chemicals 4 Plastics Company Inc. South Charleston, BY, http //vvvvwunimvcarhide.coin/. Acrolein and Derivatives... 

Half Kuriyel, Millipore Coroprnhon. Bedford. MA, Ultrafillration J. J. Kurland. Union Carbide Chemicals [Pg.1841]

There is potential for exposure to acrolein in many occupational settings as the result of its varied uses and its formation during the combustion and pyrolysis of materials such as wood, petrochemical fuels, and plastics. As a result, it would be difficult to list all the occupations in which work-related exposure to acrolein occur. It appears that occupational exposure can occur via inhalation and dermal contact. 

IARC. 1979. IARC monographs on the evaluation of the carcinogenic risk of chemicals to humans. Vol. 19 Some monomers, plastics and synthetic elastomers, and acrolein. World Health Organization, Lyon, France. 

Acrolein, Material Safety Data Sheet, Union Carbide Chemicals and Plastics Company Inc., Specialty7 Chemicals Division, August 15, 1989. 

Use Esters for use in resins and plasticizers, intermediate for pharmaceuticals and other organic chemicals, manufacture of glycerol and acrolein, military poison, herbicide. 

Formaldehyde (CH20) is an important compound in the synthesis of various chemicals on an industrial scale. One of the first industrial applications was in the production of artificial Indigo. The variety of end products produced from formaldehyde include resins or glues (produced by the condensation of formaldehyde with urea, phenol, or melamine) as well as rubber, paper, fertilizers, explosives, engineering plastics, and specialty chemicals like acrolein, methacrylic acid, methyl methacrylate, etc. Because it is nearly impossible to handle in its pure gaseous form, formaldehyde is almost exclusively produced... 

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