The United States of America As Represented by the Secretary of

Robert J Harper, Jr

Gloria A Gautreaux

Eugene J Blanchard

John G Frick, Jr

Joseph S Bruno

Timothy A Calamari, Jr

Sidney P Schreiber

Bethlehem K Andrews

Darrell J Donaldson

John V Beninate

Norton A Cashen

John T Lofton

Processes for dyeing, print-dyeing and differentially dyeing smooth-dry cellulose containing fabric are disclosed. Cellulose containing fabric is treated with a solution of crosslinking agent and a reactive additive which can be either polyethylene glycol or choline quaternary. The resultant fabric can then be dyed with a cellulosic dye. Print-dyeing is accomplished by selective application of a choline quaternary to a fabric padded crosslinking agent or by printing with a combination of crosslinking agent and choline quaternary on an untreated cellulosic fabric. These treatments are then followed by curing and dyeing. Differential dyeing is accomplished by first treating separate yarns with different solutions containing crosslinking agent with and without choline quaternary, drying, knitting, curing and dyeing the knitted fabric.

Process for dyeing smooth-dry cellulosic fabric

Cellulosic fabric is dyed by affixing a hydroxymethyl phosphonium-nitrogen based polymer to the fabric and thereafter dyeing it with a cotton dye having anionic groups, in an acidic or neutral environment. In addition, a new method of affixing the polymer to the fabric is provided comprising contacting the fabric with a solution of urea and a precondensate of urea and tetrakis hydroxymethyl phosphonium salt.

Process for flameproofing cellulosic fibers prior to dyeing

Process for producing smooth dry-cellulose containing fabrics with durable softness and dyeable properties are disclosed. Cellulose containing fabric is treated with a solution of crosslinking agent, acid catalyst and a longchain alkyl bishydroxyethyl quaternary amine salt additive. The resultant fabric is smooth-dry durably softened and can be dyed. Printdyeing is accomplished by selective application of the alkyl quaternary to a fabric padded with a crosslinking agent. This treatment is then followed by curing and dyeing. Differential dyeing is accomplished by first treating separate yarns with different solutions containing crosslinking agent with and without the alkyl quaternary, drying, knitting, curing and then dyeing the knitted fabric. Multicolored crossdyed cellulosic fabrics which are partly crosslinked are produced by crosslinking preselected areas of fabric with a grafted cationic group and leaving other areas untreated; immersing the fabric in an acidic anionic dyebath to dye the cationic areas and then immersing in a different colored alkaline, reactive dyestuff dyebath to dye the untreated areas.

Process for producing smooth-dry cellulosic fabric with durable softness

Processes for producing multicolor crossdyed cellulosic fabrics which are fully or partly crosslinked are disclosed. These processes include: (1) crosslinking preselected areas of fabric with a grafted cationic group and leaving other areas untreated; immersing the fabric in an acidic anionic dyebath to dye the cationic areas and then immersing in a different colored, alkaline, unreactive dyestuff dyebath to dye the untreated areas and produce a bicolored fabric, (2) crosslinking fabric areas with a grafter cationic group and then the remaining areas with an anionic group; immersing in an acidic, anionic dyebath to dye the cationic areas and the immersing in a different colored cationic dyebath to dye the anionic areas and produce bicolored fabric, and (3) preselecting and treating areas of fabric to be cationic, anionic and untreated; immersion dyeing as above the cationic, untreated and then the anionic areas of fabric to produce a multicolored fabric.

Process for crossdyeing cellulosic fabrics

Synthetic-cellulosic blended fabric is padded with a solution of nitrogen rich N-methylol crosslinking agent, acid catalyst, antimony oxide and a halogen containing alcohol; dried at about 140.degree.-190.degree. F. and then cured at about 250.degree.-400.degree. F. for sufficient time to impart smooth-dry and flame retardant properties to the fabric. Aqueous polyethylene or silicone emulsion softeners can be added to the padding solution if desired. Dibromoneopentyl glycol makes an exemplary halogen containing alcohol. The process can be varied to first pad with antimony oxide, dry, and then repad with a solution of: nitrogen rich N-methylol crosslinking agent, acid catalyst, and a halogen containing alcohol, dry again and cure, at the above specified temperatures.

Process to impart smooth-dry and flame retardant properties to

Fabric is padded with a solution of nitrogen rich N-methylol crosslinking agent, acid catalyst, antimony oxide and a halogen containing alcohol; dried at about 140.degree.-190.degree. F. and then cured at about 250.degree.-400.degree. F. for sufficient time to impart smooth-dry and flame retardant properties to said fabric. Aqueous polyethylene or silicone emulsion softeners can be added to the padding solution if desired. Glycol, polyol and dibromoneophentyl glycol make exemplary halogen containing alcohols. The process can also be varied to first pad with antimony oxide, dry, and then repad with a solution of: nitrogen rich N-methylol crosslinking agent, acid catalyst, and a halogen containing alcohol, dry again and cure, at the temperatures specified supra.

A process for improving the radiation resistance of cellulosic fabrics is disclosed. Fabric is immersed first in a 23% caustic solution for 15 minutes and then in a 5% caustic solution for 15 minutes. The excess caustic is removed and the fabric padded to 105% wet-pickup using neutralized pentafluorobenzoic acid. The fabric is then cured at 130.degree.-140.degree. C. for 6-8 minutes.

Radiation-resistant fluoroaromatic cellulosic ethers

A finishing agent for fabrics containing cellulose that is free of formaldehyde is prepared from equimolar amounts of methyl carbamate and glutaraldehyde. The reaction product, although unstable in dilute aqueous solution, can be applied to fabric from concentrated aqueous solution or can be methylated for application from dilute solution. Fabric is given wrinkle-resistance and durable-press properties with no release of formaldehyde from the agent or from the treated fabric.

Textile finishing agents from reaction products of carbamates and

A process is disclosed for the heat transfer printing of cellulose-containing fabrics in garment form with disperse dyestuffs, wherein the fabric is treated only on one side by a printing or spraying technique with a formulation containing highly methylated melamine-formaldehyde crosslinking agent, acid catalyst, and other necessary additives. Fabrics with prints that are durable to washing are produced by simultaneously heat transfer printing and curing at about 190.degree. C. to 220.degree. C. for 20-30 seconds.

Process for producing transfer printed cotton and cotton blends

Cotton, or other fabric containing cellulose, is treated with acrylamide and a chemical initiator that promotes reaction of acrylamide with cellulose. The fabric, with bound acrylamide, is then treated with glyoxal and an acidic, metal salt catalyst to produce a fabric containing crosslinked cellulose. Thus, the fabric is given wrinkle resistance and durable-press properties by the treatment without using formaldehyde, free or combined, that could be released during treatment or from the treated fabric.

Wrinkle-resistant and durable-press cotton-containing fabric by

New compounds in the class of .alpha.,.omega.-bis(4,5-dihydroxy-3-methyl-2-oxoimidazolidin-1-yl)alkanes have been prepared from the reaction of glyoxal and an alkylenebis(3-methylurea). These compounds are useful as formaldehyde-free finishing agents for textiles containing cellulose.

Bis(dihydroxymethyloxoimidazolidinyl)alkanes

Smolder resistance is imparted to cotton and cotton-containing fabrics by applying a certain boron-nitrogen-phosphorus system to the fabric, employing conventional equipment. An inorganic boron compound is placed in solution with a phosphorus-containing compound, then a nitrogen-containing compound is added. The aqueous mixture is applied using conventional textile equipment, dried, and cured by standard methods.

Method of imparting smolder resistance to cotton-containing textiles

A pretreatment system composed of hexamethoxymethyl melamine, p-toluene sulfonic acid, 2-amino-2-methyl-1-propanol, triethylamine, butoxy triglycol, and carboxy vinyl polymeric thickener is disclosed, which through application to the fabric surface by a screen printing technique is highly effective in improving the affinity of cellulose-containing textiles for disperse dyestuffs. Fabrics with prints that are durable to washing are produced by simultaneously heat transfer printing and curing at about 190.degree. C. to 220.degree. C. for 20-30 seconds.

Flame resistance sufficient to enable cellulose containing materials to pass modern flammability standards has been imparted to these materials by application of an aqueous solution containing a methylol phosphorus compound followed by heat drying to about 15% or less moisture content, and finally by polymerizing the phosphorus material in the cellulose containing material by any one of several indirect aqueous ammonia curing techniques. The invention provides an improved process for flame proofing cellulosic materials which avoids the use of ammonia gas during the cure and which results in little or no loss in tensile strength or in an undesirable change in hand. Cellulosic textiles treated by this process retain their flame resistant properties after repeated laundering.

Growing community of inventors

Metairie, LA, United States of America

Robert J Harper, Jr