Patents by Inventor Robert J. Harper, Jr.
Robert J. Harper, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 4780102Abstract: 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.Type: GrantFiled: July 24, 1986Date of Patent: October 25, 1988Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Robert J. Harper, Jr.
-
Patent number: 4765796Abstract: 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.Type: GrantFiled: July 20, 1987Date of Patent: August 23, 1988Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Robert J. Harper, Jr., John V. Beninate
-
Patent number: 4743266Abstract: 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.Type: GrantFiled: September 9, 1986Date of Patent: May 10, 1988Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Robert J. Harper, Jr.
-
Patent number: 4711640Abstract: 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.Type: GrantFiled: June 25, 1986Date of Patent: December 8, 1987Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Robert J. Harper, Jr.
-
Patent number: 4629470Abstract: 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.Type: GrantFiled: October 18, 1985Date of Patent: December 16, 1986Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Robert J. Harper, Jr.
-
Patent number: 4618512Abstract: 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.Type: GrantFiled: June 28, 1985Date of Patent: October 21, 1986Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Robert J. Harper, Jr.
-
Patent number: 4536422Abstract: 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.Type: GrantFiled: March 6, 1984Date of Patent: August 20, 1985Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Robert J. Harper, Jr.
-
Patent number: 4362527Abstract: 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.Type: GrantFiled: January 4, 1982Date of Patent: December 7, 1982Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Robert J. Harper, Jr.
-
Patent number: 4353707Abstract: 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.Type: GrantFiled: September 15, 1981Date of Patent: October 12, 1982Assignee: The United States of America as represented by the Secretary of AgricultureInventors: John G. Frick, Jr., Robert J. Harper, Jr.
-
Patent number: 4304564Abstract: 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.Type: GrantFiled: May 5, 1980Date of Patent: December 8, 1981Assignee: The United States of America as represented by the Secretary of AgricultureInventors: John G. Frick, Jr., Robert J. Harper, Jr.
-
Patent number: 4304565Abstract: 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.Type: GrantFiled: December 3, 1980Date of Patent: December 8, 1981Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Eugene J. Blanchard, Gloria A. Gautreaux, Robert J. Harper, Jr.
-
Patent number: 4298747Abstract: 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.Type: GrantFiled: August 25, 1980Date of Patent: November 3, 1981Assignee: The United States of America as represented by the Secretary of AgricultureInventors: John G. Frick, Jr., Robert J. Harper, Jr.
-
Patent number: 4280812Abstract: 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.Type: GrantFiled: March 21, 1980Date of Patent: July 28, 1981Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Darrell J. Donaldson, Robert J. Harper, Jr.
-
Patent number: 4236890Abstract: 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.Type: GrantFiled: June 7, 1978Date of Patent: December 2, 1980Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Eugene J. Blanchard, Gloria A. Gautreaux, Robert J. Harper, Jr.
-
Patent number: 4194032Abstract: 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.Type: GrantFiled: March 5, 1975Date of Patent: March 18, 1980Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Robert J. Harper, Jr., Timothy A. Calamari, Jr., Sidney P. Schreiber
-
Patent number: 4170670Abstract: Cotton fabric and cotton-blended fabric which has been sensitized by treatments with methylol phosphorus compounds and heat-dried have been subjected to a "wet-transfer" technique which transfers a formaldehyde donor along with an aqueous ammonium hydroxide solution, thus providing an improved process for imparting flame retardance to fibrous cellulosic materials.Type: GrantFiled: December 30, 1977Date of Patent: October 9, 1979Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Robert J. Harper, Jr., Timothy A. Calamari, Jr., Sidney P. Schreiber
-
Patent number: 4105403Abstract: To the surface of knitted cotton fabrics is applied from 20 to 90% wet add-on of crosslinking agent in a novel geometric pattern by any of several techniques including kiss-roll padding, printing, or transferring the solution of crosslinking agent from impregnated material to the surface of the knitted fabric, followed by drying and curing the moist textile at elevated temperatures, and finally by washing the cured fabric to effect differential shrinkage of the fabric in the applied design, which novel shrinkage in the fabric is fixed through the life of the fabric and is stable through subsequent launderings.Type: GrantFiled: May 7, 1976Date of Patent: August 8, 1978Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Bethlehem K. Andrews, Robert J. Harper, Jr., Norton A. Cashen
-
Patent number: 3975154Abstract: This invention relates to the preparation and use of durable press fabrics with strong acid grafts. The preparation is accomplished by the incorporation of a reactive hydroxyalkyl sulfonic or phosphinic acid in a crosslinking finishing system. As a consequence of this, durable press fabrics are produced with sulfonic or phosphinic acid grafts. Because of these strong acid grafts, these fabrics show improved moisture regain properties, can be dyed with basic dyes, can be whitened with basic optical brighteners and have ion exchange properties for metallic cations.Type: GrantFiled: June 9, 1975Date of Patent: August 17, 1976Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Robert J. Harper, Jr., Gloria A. Gautreaux, Joseph S. Bruno
-
Patent number: 3975152Abstract: This invention relates to fabric treatments by which cotton and cellulosic blended fabrics can be provided with wrinkle resistance (smooth dry performance) and color at the same time. In particular, it provides a means by which cellulosic fabrics can be dyed with basic dyestuffs. In addition to a conventional means by which the entire fabric can be dyed with a basic dye, variations are achieved in which one side of the fabric is dyed one color and the other side of the fabric is dyed a second color. The color on the reverse side can be provided by means of either basic dyes or regular cotton dyes. The technique has also been extended for the printing of fabrics.Type: GrantFiled: January 23, 1975Date of Patent: August 17, 1976Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Robert J. Harper, Jr., Joseph S. Bruno, Eugene J. Blanchard, Gloria A. Gautreaux
-
Patent number: 3960477Abstract: This invention relates to a process for producing crossdyed cotton fabrics. For this purpose, by means of a chemical technique, procedures which permit the dyeing of selective yarns in a fabric have been developed.Type: GrantFiled: January 11, 1974Date of Patent: June 1, 1976Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Robert J. Harper, Jr., Eugene J. Blanchard, John T. Lofton, Gloria A. Gautreaux