Glyoxal Reactants

Gives excellent wash/wear properties and shrinkage control for pre- or post-cure application. 

Buffered to give very good shade control gives reduced fiber degradation good on white fabrics for pre- and postcure application. 

Modified glyoxal reactant that gives excellent shrinkage control. 

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The chemical name of this reagent is l,3-bis(hydroxymethyl)-4,5-dihydroxy-imidazolidinone-2 but it is usually called DMDHEU or the glyoxal reactant because it is prepared from glyoxal, urea, and formaldehyde. Other methylolamide agents that have been used for producing wrinkle resistance in cotton include the aforementioned urea formaldehyde, dimethylolurea, dimethylolethyleneurea, and formaldehyde adducts of melamines (triazines), acetylenediurea, propyleneurea, uron, triazones, and alkyl carbamates. Reactions between methylolamides and cellulose occur in the presence of acid (or Lewis acid) catalysts and are very fast at elevated temperatures—sufficiently so that they are adaptable to the requirements of rapid, commercial processing of cotton fabrics. 

The degree of substitution for optimum results will vary depending on the durable-press resin with which it is to be used. For many glyoxal reactants, the substitution will average about 35% on the active-solids basis. With certain carbamates the optimum may be closer to 50% replacement on a direct-weight basis. For trial formulation with a specific modified reactant system, use about one-third substitution as a starting level. 

Is a glyoxal reactant finishing resin to provide internal fiber stability and crease resistance to fabrics and chlorine resistance for properly cured finishes. 

Glyoxal reactant. Recommended for durable press finishing of synthetic/cellulose blends. Treated materials have high crease retention and excellent performance ratings. 

Modified glyoxal reactant that gives less than 200 ppm of fabric formaldehyde gives good fabric properties for pre-or post-cure application. 

Excellent catalyst for buffered glyoxal reactants—zinc nitrate solution. 

Glyoxal reactant resin ECCO REZGLF Eastern Color... 

Hylite LF. [Nat l. Starch Chem.] Glyoxal reactant imparts permanent press in precure and postcure formulations. 

Uses. Furfuryl alcohol is widely used as a monomer in manufacturing furfuryl alcohol resins, and as a reactive solvent in a variety of synthetic resins and appHcations. Resins derived from furfuryl alcohol are the most important appHcation for furfuryl alcohol in both utihty and volume. The final cross-linked products display outstanding chemical, thermal, and mechanical properties. They are also heat-stable and remarkably resistant to acids, alkaUes, and solvents. Many commercial resins of various compositions and properties have been prepared by polymerization of furfuryl alcohol and other co-reactants such as furfural, formaldehyde, glyoxal, resorcinol, phenoHc compounds and urea. In 1992, domestic furfuryl alcohol consumption was estimated at 47 million pounds (38). 

Periodic acid oxidation will also act on a-hydroxy aldehydes and ketones, a-diketones, a-keto aldehydes, and glyoxal. If the two neighboring hydroxyl groups are on an aromatic ring, the carbon-carbon bond is not cleave but the reactant is still oxidized. Thus, catechol is oxidized to the corresponding quinone. 

Formation of novel free radical products at an early stage of the Maillard reaction was demonstrated by use of ESR spectrometry. Analyses of the hyperfine structures for various sugar-amino compound systems led to the conclusion that the radical products are N,N -disubstituted pyrazine cation radicals. These new pyrazine derivatives are assumed to be formed by bimolecular condensation of a two-carbon enaminol compound involving the amino reactant residue. The presence of such a two-carbon product in an early stage reaction mixture of sugar with amine was demonstrated by isolation and identification of glyoxal dialkylimine by use of TLC, GLC, NMR, MS and IR. 

Concentrated low-formaldehyde reactant, highly reactive Composition Modified glyoxal based resin Typical properties ... 

Composition Modified glyoxal based reactant, pre-catalyzed. 

Composition Buffered pre-catalyzed modified glyoxal based reactant... 

Catalyst for resin finishing of woven and knitted fabrics of cellulosic fibers and blends. CASSURIT Catalyst AM is an acid donor for crosslinking resins giving a high rate of cure to low formaldehyde glyoxal based reactants. CASSURIT Catalyst AM was developed to provide excellent shade and whiteness retention. 

REFORM textile reactant permanently reduces free formaldehyde levels on cured fabric when used with any of the usual durable-press resin systems--glyoxal, carbamate, or urea-formaldehyde. It works with both 100% cotton and cotton/polyester blended fabrics. 

Highly concentrated, low formaldehyde glyoxal based reactant for durable press and shrink resistant finishing. 

INTEX CATALYST 58 is used with glyoxal/urea reactants in a ratio of 10 to 20% on weight of reactant, depending on type and concentration of the latter. While it can also satisfactorily be used as catalyst in a pre-cure system, it is typically used in post-cure DP Systems without danger of catalysis during storage before cutting. 

INTEX REACTANT 510 is a methylated glyoxal-urea-formaldehyde developed to produce fabrics with very low free formaldehyde. 

Medium active catalyst for glyoxal and carbamate reactants--modified magnesium chloride solution. 

Type Self-catalyzed glyoxal based reactant Appearance Clear to straw colored liquid... 

REACTANT 41 2B glyoxal based durable press reactant... 

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