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Textile Research Journal
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Hydroxymethanesulfonic Acid as a Catalyst for Durable Press Finishing

J. David Reid

Southern Regional Research Laboratory,1 New Orleans, Louisiana 70179, U. S. A.

Norton A. Cashen

Southern Regional Research Laboratory,1 New Orleans, Louisiana 70179, U. S. A.

Russell M.H. Kullman

Southern Regional Research Laboratory,1 New Orleans, Louisiana 70179, U. S. A.

Robert M. Reinhardt

Southern Regional Research Laboratory,1 New Orleans, Louisiana 70179, U. S. A.

Hydroxymethanesulfonic acid (HMS) is effective as a catalyst for durable-press finishing of cotton and polyester /cotton fabrics by pad-dry-cure, mild cure, and one-step dry-cure treatments. The catalyst is readily formed upon addition of sulfurous acid to pad baths containing free formaldehyde although it can be prepared separately. HMS is a strong acid and can be used in relatively small concentrations. The catalyst appears to be "self-limiting." It dissociates into volatile components during the curing treatment which makes afterwashing unnecessary to prevent changes in strength or wrinkle resistance.

HMS catalysis of treatments with dimethylol methyl carbamate and formaldehyde crosslinking agents produced fabrics with high levels of durable-press properties. Mild-cure finishing at 100°C, and pad-dry-cure and one-step dry-cure finishing at 120-140°C were effective with this catalyst.

Key Words: Cellulose • cotton • polyester/cotton. Crosslinking agents • finishing agents • dimethylol methyl carbamate • formalde hyde. Hydroxymethanesulfonic acid • catalysts • sulfurous acid • sulfur dioxide • free formaldehyde • formaldehyde- sulfurous acid product • sulfuric acid • sodium bisulfite. Catalysis • stability • decomposition • dissociation • volatilization • afterwash. Finishing • crosslinking • durable-press • pad-dry-cure finishing • mild-cure finishing • one-step dry-cure finishing • moisture content. Curing • time-temperature • catalyst concentration. Wrinkle resistance • wrinkle recovery angle • durable-press rating • breaking strength • chlorination-scorch test • nitrogen content • formaldehyde content.

Textile Research Journal, Vol. 42, No. 2, 89-96 (1972)
DOI: 10.1177/004051757204200204
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