Furfuryl alcohol additive

Fire doors are usually constructed by bonding plywood to a frame of fire-retardant-treated stiles and rails, made with either hard maple or a man-made hardboard, this frame having been fastened around a fire-resistant mineral core. Casein and casein-soy blend glues with and without the furfuryl alcohol additive are the primary adhesives currently selected for use in these operations. 

Furfuryl alcohol, on long storage, becomes progressively darker and less water soluble, a change that is also caused by heat, acidity, and exposure to air. The reactions responsible for this change in water solubiUty may be retarded by the addition in small quantity of an organic or inorganic base. Commercial furfuryl alcohol, however, usually does not contain any additives. 

Tetrahydrofurfuryl alcohol is used in elastomer production. As a solvent for the polymerization initiator, it finds appHcation in the manufacture of chlorohydrin mbber. Additionally, tetrahydrofurfuryl alcohol is used as a catalyst solvent-activator and reactive diluent in epoxy formulations for a variety of apphcations. Where exceptional moisture resistance is needed, as for outdoor appHcations, furfuryl alcohol is used jointly with tetrahydrofurfuryl alcohol in epoxy adhesive formulations. 

The simultaneous addition of furfural and sodium hydroxide maintains the concentration of sodium hydroxide at about 2.5%, at which concentration only a small percentage of furfuryl alcohol is formed in the accompanying Cannizzaro reaction. 

As we found that furan and thiophene substituted oximes can be used as substrates for the INOC reactions (Eq. 5) [29b] similarly, furan substituted nitro alkane 134 is also a good substrate for INOC reactions (Eq. 13) [40]. The furfuryl derivative 134, prepared via Michael addition of furfuryl alcohol to 4-methoxy- -nitrostyrene, was subsequently transformed without isolation of the intermediate nitrile oxide 135 to the triheterocyclic isoxazoline 136 as a 5 1 mixture of isomers in high yield. 

Nitration of furfuryl alcohol (2-furylmethanol) in acetic anhydride yields the nitro-nitrate 57 which possesses both a reactive methylene group able to undergo aldol reactions, etc., and also a nitrate ion leaving group for nucleophilic substitutions.137 Detailed studies of the nitration disclose various products resulting from the addition of one or even two acetic acid residues to the furan nucleus in competition with the nitrations.138,139... 

In principle, molecular sieve carbons (MSC) can be achieved by the pyrolysis of thermosetting polymers such as polyvinylidene chloride, polyfurfuryl alcohol, cellulose, cellulose triacetate, polyacrylonitrile and phenol formaldehyde (Koresh 1980). An example is given by Trimm and Cooper (1970,1973) for the preparation of MSC (mixed with metallic compounds) for catalyst systems. A mixture of furfuryl alcohol, platinum oxide and formaldehyde was heated to 40°C and additional formaldehyde was added to ensure the... 

Hydroxylic groups in positions a to heterocyclic aromatics undergo hydro-genolysis in catalytic hydrogenation. In the case of furfuryl alcohol, hydrogenation also reduces the aromatic nucleus and easily cleaves the furan ring giving, in addition to a-methylfuran and tetrahydrofurfuryl alcohol, a mixture of pentanediols and pentanols [38,420]. 

The degradation of furfuryl alcohol in acidified methanol has been more extensively studied than the aqueous reaction. The following compounds, in addition to the levulinic ester and several dimers and... 

In addition to the impregnation method with furfuryl alcohol, Kyotani et al. attempted to deposit pyrolytic carbon on the inside of the straight channels of anodic oxide film in the following way (9,12). They used two types of anodic aluminum oxide films with different channel diameters (30 and 230 nm). Each anodic oxide film... 

Addition of 0.5% sodium alkyl sulphate to furfuryl alcohol 14.4 millisec... 

Benton and Schmitt38) described several carbonized syntactic materials using phenolic and carbon microspheres. The binders included wood resin, partially polymerized furfuryl alcohol, isotruxene, decacyclene, starch, and epoxy oligomers. Furfuryl alcohol and maleic anhydride were used as hardeners (Table 9). In addition solvents (metjiyl ethyl ketone, tetrahydrofuran, and acetone) were added to improve... 

Alcohols. Explosion of mixtures with alcohols can be initiated by shock or heat8 furfuryl alcohol ignites on contact with 85% peroxide8 addition of concentrated acid to alcohol-peroxide mixtures may result in explosion adequate cooling must accompany initial additions of fert-butyl alcohol to H202 H2S04 (1 2 by weight) mixtures to prevent explosive decomposition."... 

The synthesis of nanostructured carbon using aliphatic alcohols as selfassembling molecules has demonstrated that this strategy can be extended beyond metal oxide-based materials [38]. Recently, we have reported the synthesis of a novel carbon material with tunable porosity by using a liquid-crystalline precursor containing a surfactant and a carbon-yielding chemical, furfuryl alcohol. The carbonization of the cured self-assembled carbon precursor produces a new carbon material with both controlled porosity and electrical conductivity. The unique combination of both features is advantageous for many relevant applications. For example, when tested as a supercapacitor electrode, specific capacitances over 120 F/g were obtained without the need to use binders, additives, or activation to increase surface area [38]. The proposed synthesis method is versatile and economically attractive, and allows for the precise control of the structure. 

From the molecular beam MS of the pyrolysis products of the P/N fractions, a number of phenolic compounds were detected guaiacol (2-methoxyphenol) (m/z 124), catechols (m/z 110), isomers of substituted 2-methoxyphenols with alkyl groups such as methyl (m/z 138), vinyl (m/z 150), 3-hydroxy-propen(l)-yl (m/z 180), allyl (m/z 164), hydroxyethyl (m/z 168), and ethyl (152), most likely in the para position. In addition, a few carbohydrate-derived components are also present in this fraction such as furfuryl alcohol and other furfural derivatives. 

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