Dimethylol ethylene urea

Uses Stabilizing rubber latex solvent for albumin, casein, shellac, and sulfur neutralizing oils in antifreeze as a corrosion inhibitor emulsifier adhesives textile lubricants fungicides manufacturing chelating agents such as EOT A (ethylenediaminetetraacetic acid) dimethylol-ethylene-urea resins organic synthesis. 

Since hypochlorites are often used in domestic wasliing the presence of imino groups is to be avoided. Compounds of the type dimethylol ethylene urea (4), tetramethylol acetylene diurea (7), diurethane (8), and epoxy... 

These compounds are more permanently retained because they form crosslinks with the cellulose molecules as well as being rendered insoluble by polymerization. Dimethylol ethylene urea can, for example, cross-link in the following manner ... 

Dimethyl [3-(oleoylamino) propyl] ammonium propionate. See Oleamidopropyl dimethylamine propionate N,N -Dimethylol ethylene urea CAS 28906-87-8 Synonyms DMEU Empirical C5H10N2O3 Properties M.w. 146.14 Uses Amino resin modifier leather tanning aux. textile aux. for permanent press finishes... 

DMEA. See Dimethylethanolamine DMEP. See Dimethoxyethyl phthalate DMES. See Dimethylethoxysilane DMEU. See N,N -Dimethylol ethylene urea DMF DM FA. See Dimethyl formamide... 

Dihydrogenated tallow methylamine auxiliary, textiles permanent press finishes N,N -Dimethylol ethylene urea aviation fuel m-Xylene... 

Because of the tertiary nitrogen, these reactant resins cannot form chloroamines and therefore cannot evolve any hydrogen chloride. In addition, 4,5-dihydroxy-1,3-dimethylol ethylene urea is tetrafunctional, since the CHOH groups in the 4 and 5 positions also possess methylol characteristics. Cotton treated with triazone is more stable to acids and alkalis than DMEU products, but it has to be rinsed well because of its fishy odor. In addition, it tends to become yellow at high temperatures. AT,N -Di-methylol-N,iV -dialkyl urea, on the other hand, cannot be employed as a reactant resin since its equilibrium tends considerably toward the formaldehyde side ... 

One of the major advances in textile technology in recent years has been the introduction of resin finishes that impart the wrinkle- and crease-resistant properties associated with wash and wear fabrics. Ordinarily used with cotton and viscose rayon, resin finishes are currently applied to the majority of shirts, blouses, etc. The resin finishes consist of aqueous solutions of urea formaldehyde or melamine formaldehyde precondensates or of cyclic ureas such as dimethylol ethylene urea. It is thought that wrinkle resistance is imparted through the cross-linking of adjacent cellulose chains in the fiber, rather than from resin formation in or between fibers. 

Other chemical crosslinking agents that have been nsed to provide durable press properties to cellulose include dimethylol ethylene or propylene urea, diglyoxal urea, triazons, urons, carbamates, diepoxides and diisocyanates. However, owing to either high cost or limited technical advantages, very few are actually used commercially, sometimes as minor components of mixtures for special effects. 

FIXAPRET CPN and CP Conc. contain dimethylol-4.5-dihydroxy-ethylene urea in the form of 45% and 75% solutions respectively. Both the storage and bath stability of the products are very good. 

Dimethylol cyclic ethylene urea (4) dimethylol methyl triazone (5) and trimethylol melamine methyl ester (6) are also used. 

DMDHEU = Dimethylol dihydroxy ethylene urea (Belmadur of BASF) ... 

Dimethylol dihydroxy ethylene urea (DMDHEU), a resin primarily developed for the textile industry, was used on wood (Scheme 9.4.9), e.g. beech... 

Easy-care and permanent press finish N,tf -Dimethylol-4,5-dihydroj ethylene urea (DMDHEU) N,N -Dimethyl-4,5-dihydroxyethylene urea (DMeDHEU) 1,2,3,4-Butanetetracarhoxylic add (BTCA)... 

Temperatures in excess of 140°C are required to complete the reaction and pressurized equipment is used for alcohols boiling below this temperature provision must be made for venting ammonia without loss of alcohol. The reaction is straightforward and, ia the case of the monomethyl ether of ethylene glycol [109-86-4] can be carried out at atmospheric pressure usiag stoichiometric quantities of urea and alcohol (45). Methylolation with aqueous formaldehyde is carried out at 70—90°C under alkaline conditions. The excess formaldehyde needed for complete dimethylolation remains ia the resia and prevents more extensive usage because of formaldehyde odor problems ia the mill. 

Acrylonitrile/butadiene/styrene copolymer Boric acid Carnauba (Copernica cerifera) wax Carnauba synthetic Corn (Zea mays) oil Dimethylol urea Ethoxyethanol acetate Ethylene glycol dimethacrylate lsotrideceth-7 Japan wax, synthetic Nitrocellulose Sodium chlorate... 

Fluorinated ethylene/propylene shrink-proofing, cotton Dimethylol urea sidewalls... 

Using a mixture of castor oil and hydroxyether of bisphenol-A (HBA) as the polyol and reacting with TDI in the presence of DBTDL catalyst at 35°C, a series of polyurethanes are prepared in an air-circulating oven for 48 h. A series of poly(urethane urea)-vinyl polymer hybrid aqueous dispersions are prepared. Waterborne poly(urethane urea) is synthesised from castor oil and polyoxypropylene polyol M = 1000 g moL ), dimethylol propionic acid and isophorone diisocyanate and then neutralised with tertiary amine. The hybrid aqueous dispersion with high oil content poly(urethane urea) exhibits excellent compressive mechanical strength. Sunflower oil-modified waterborne polyurethane resin may also be prepared. The waterborne resin is synthesised from the monoglyceride of the oU, poly(propylene-ethylene) triol, tartaric acid and toluene diisocyanate, then neutralised with triethyl amine. 

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