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US 4,072,784 AGranted
Fixation of multivalent metal salts of carboxyl-containing vinyl monomers on fibrous substrates
AssigneeThe United States of America as represented by the Secretary of Agriculture
InventorsVidabelle O. Cirino, Stanley P. Rowland
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Abstract
Water-soluble multivalent metal salts of carboxyl-containing vinyl monomers are polymerized in situ in fibrous substrates and fixed therein as network polymeric structures. This finish is useful for development of flame retardance, sanitizing characteristics, and other special performance qualities in fibrous compositions and fabrics.
Claims7
A process for preparing cellulosic or synthetic fibers having anti-bacterial properties, flame retardancy and sanitizing characteristics comprising:
- (a) immersing a cellulosic or synthetic fiber in an aqueous solution containing about 1-40 weight percent of a water soluble polyvalent metal salt of a carboxyl containing acrylic or vinyl monomer, about 0-3 weight percent of a water soluble polyfunctional vinyl monomer, about 0-15 weight percent of a monofunctional vinyl comomomer and about 0.03 to 3.0 weight percent of a free radical initiator;
- (b) squeezing the immersed fiber from step (a) to remove the excess solution;
- (c) curing the squeezed fiber from step (b) at a temperature of 120.degree.-160.degree. C.;
- (d) washing the cured fiber from step (c);
- and
- (e) drying the washed fiber from (d).
3 more elements
Dependencies are inferred from the claim text.