Patents by Inventor Ruth R. Benerito

Patent number: 5322524
Abstract: Novel cellulosic fiber with improved resistance to abrasion and increased permeability to chemicals characterized by highly stable crystalline cellulose III and cellulose IV forms is disclosed. Cellulose selected from either fiber, yarn, fabric, cotton, or mercerized cotton is treated with ammonia vapors at from about ambient to 140.degree. C. and from about 100 psi to 1700 psi for sufficient time to alter the interatomic planar distances and produce stable crystalline cellulose III polymorph. Crystalline cellulose III can also be immersed in ethylenediamine and then boiled in dimethylformamide to completely convert the III to cellulose IV.
Type: Grant
Filed: September 12, 1991
Issued: June 21, 1994
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Lawrence Y. Yatsu, Timothy A. Calamari, Jr., Ruth R. Benerito
Patent number: 4871370
Abstract: Novel cellulosic fiber with improved resistance to abrasion and increased permeability to chemicals characterized by highly stable crystalline cellulose III and cellulose IV forms is disclosed. Cellulose is selected from either fiber, yarn, fabric, cotton, or mercerized cotton treated with ammonia vapors at from about ambient to 140.degree. C. and from about 100 psi to 1700 psi for sufficient time to alter the interatomic planar distances and produce stable crystalline cellulose III polymorph. Crystalline cellulose III can also be immersed in ethylenediamine and then boiled in dimethylformamide to completely convert the III to cellulose IV.
Type: Grant
Filed: June 18, 1987
Issued: October 3, 1989
Assignee: The United States of America as represented by the Secretary of the Agriculture
Inventors: Lawrence Y. Yatsu, Timothy A. Calamari, Jr., Ruth R. Benerito
Patent number: 4414084
Abstract: This invention relates to a process for converting cellulose to amino acids by radiofrequency plasma of nitrogen and hydrogen gases. Cellulose is placed between the electrodes in a radiofrequency plasma reaction chamber which is sealed and maintained at a reduced pressure. Hydrogen and nitrogen mixture is bled through the chamber and sufficient radiofrequency electric current applied until the cellulose is consumed, thereby producing a mixture of amino acids. The cellulose can be either cotton or wood derivatives.
Type: Grant
Filed: August 18, 1982
Issued: November 8, 1983
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Truman L. Ward, Ruth R. Benerito
Patent number: 4351857
Abstract: A process for producing a polymeric-type film in the surface of cellulosic fibers is disclosed. Cellulosic fibers are irradiated in the colored area of a radiofrequency plasma of ammonia for a period of about 10 minutes to 2 hours in a reactor designed to admit ammonia between electrodes at a rate such that all of the ammonia molecules have been activated to plasma. A polymer coating is formed in the surface of the cellulosic fibers that is alkali resistant, water-repellent and improves the wrinkle recovery of the fabrics.
Type: Grant
Filed: August 19, 1981
Issued: September 28, 1982
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Truman L. Ward, Ruth R. Benerito
Patent number: 4092106
Abstract: Cotton and cotton-blended fabrics are impregnated with an emulsion containing an N-methylolated urea resin, a Lewis-acid catalyst, an emulsifying agent, and softener in a water-chlorinated solvent formulation to impart improved durable press properties.
Type: Grant
Filed: September 22, 1976
Issued: May 30, 1978
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Ralph J. Berni, Ruth R. Benerito, Mary W. Pilkington
Patent number: 4084027
Abstract: Stable oil and water emulsions, prepared such that a water-soluble phosphorus monomer, a melamine-formaldehyde resin, and an emulsifier of high HLB value are in the water phase while an oil soluble halogenated phosphate and emulsifier of low HLB value are in a chlorinated solvent, can be used to impart durable-to-laundering flame retardancy to both cotton and cotton-polyester textiles provided the HLB value of the final emulsion is greater than 9 and not over 15.1.
Type: Grant
Filed: May 6, 1977
Issued: April 11, 1978
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Ralph J. Berni, Marilyn M. Smith, Ruth R. Benerito
Patent number: 4082500
Abstract: Certain chemically modified cotton fabrics have been treated with vapors of glycidol at reduced pressures in a heated chamber to impart improved wet and dry wrinkle recovery characteristics.
Type: Grant
Filed: May 6, 1977
Issued: April 4, 1978
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Truman L. Ward, Ruth R. Benerito
Patent number: 4067689
Abstract: Diethylaminoethyl (DEAE)-Cotton, prepared so that the tertiary amine nitrogens have unshared electrons and are thus in the Lewis-base form, is reacted with an alcoholic solution of an alpha-omega dihaloalkane to quaternize amino groups. The fabric produced by this process is crosslinked between tertiary amine nitrogen groups in cellulose and every alkylene group introduced is connected to two quaternary ammonium ions. The products of this process have strong base anion exchange properties and fabrics of high nitrogen content are imparted both wet and dry crease resistance.
Type: Grant
Filed: September 30, 1976
Issued: January 10, 1978
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Dorothy M. Perrier, Ruth R. Benerito
Patent number: 4046953
Abstract: Glasslike materials have been produced by heating plumbite-treated cellulosics in a limited oxygen atmosphere while in contact with a glass or ceramic surface. Cotton-lace, knits, and other designs of cellulosic materials can be applied to glass or ceramic surfaces by process of this invention. Glass or ceramic materials have been joined together to form a strong bond by placing a piece of the plumbite-treated cellulosic material between the glasses and heating the assembly in a limited oxygen atmosphere. Etching of glass has also been achieved by process of this invention.
Type: Grant
Filed: September 8, 1975
Issued: September 6, 1977
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Truman L. Ward, Ruth R. Benerito, Jacques J. Hebert
Patent number: 4032293
Abstract: Strong base quaternary ammonium cellulose derivatives prepared under anhydrous conditions are further chemically modified in selected organic solvents by a sequential process that produces a partial cellulose ether in fibrous form that can be used in electro-chemical reactions covering a range of oxidation-reduction potentials. These new derivatives can be prepared such that they stabilize a given anion in the cellulose matrix until such time as its oxidation or reduction power is needed in desired chemical reactions. Although prepared in nonaqueous media, these red-ox cellulosic anion exchangers can be used to regulate oxidation-reduction reactions in aqueous media. Some of these new red-ox anion exchangers are dispersible in water and can be reprecipitated by organic solvents without losing their red-ox abilities during the process. Others are water insoluble.
Type: Grant
Filed: September 9, 1974
Issued: June 28, 1977
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Dorothy M. Perrier, Ruth R. Benerito, Richard H. Steele
Patent number: 4029533
Abstract: Glasslike materials have been produced by heating plumbite-treated cellulosics in a limited oxygen atmosphere while in contact with a glass or ceramic surface. Cotton-lace, knits, and other designs of cellulosic materials can be applied to glass or ceramic surfaces by process of this invention. Glass or ceramic materials have been joined together to form a strong bond by placing a piece of the plumbite-treated cellulosic material between the glasses and heating the assembly in a limited oxygen atmosphere. Etching of glass has also been achieved by process of this invention.
Type: Grant
Filed: September 8, 1975
Issued: June 14, 1977
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Truman L. Ward, Ruth R. Benerito, Jacques J. Hebert
Patent number: 4013493
Abstract: Glasslike materials have been produced by heating plumbite-treated cellulosics in a limited oxygen atmosphere while in contact with a glass or ceramic surface. Cotton-lace, knits, and other designs of cellulosic materials can be applied to glass or ceramic surfaces by process of this invention. Glass or ceramic materials have been joined together to form a strong bond by placing a piece of the plumbite-treated cellulosic material between the glasses and heating the assembly in a limited oxygen atmosphere. Etching of glass has also been achieved by process of this invention.
Type: Grant
Filed: September 8, 1975
Issued: March 22, 1977
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Truman L. Ward, Ruth R. Benerito, Jacques J. Hebert
Patent number: 3963433
Abstract: Partially Aminoethylated cotton fabric is reacted with either propylene carbonate (4-methyl 1,3 dioxol-2-one) or ethylene carbonate (1,3 dioxol-2-one) with potassium carbonate as catalyst. Reaction is carrid out in a heated vacuum oven. The resultant product has urethane crosslinks and improved wrinkle recovery properties.
Type: Grant
Filed: July 23, 1975
Issued: June 15, 1976
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Truman L. Ward, Ruth R. Benerito
Patent number: 3963435
Abstract: Cellulosic fabric is reacted with a mixture of diethylene glycol, dibasic acid, and either ethylene carbonate (1,3 dioxol-2-one) or propylene carbonate (4-methyl 1,3 dioxol-2-one) in a heated evacuated oven. The resultant product has polyester linear grafts and crosslinks and improved resistance to wrinkling.
Type: Grant
Filed: September 8, 1975
Issued: June 15, 1976
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Truman L. Ward, Ruth R. Benerito
Patent number: 3963434
Abstract: Partially carboxymethylated-cotton fabric prepared by a non-aqueous procedure is reacted with either ethylene carbonate or propylene carbonate in a heated, evacuated oven. The product of either reaction is a fabric with high conditioned and high wet wrinkle recovery.
Type: Grant
Filed: July 23, 1975
Issued: June 15, 1976
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Truman L. Ward, Ruth R. Benerito, Dorothy M. Perrier
Patent number: 3936580
Abstract: Electrically conductive glasslike films have been produced on the surface of various types of glass and porcelain by heating plumbite-treated cellulosics while one surface of the plumbite-treated cellulosic was in contact with glass or porcelain and the other surface of the cellulosic was covered with either aluminum foil or powder. The heating was carried out in a closed oven with a limited availability of oxygen. The various glasses and ceramics treated by the process of this invention were imparted a conductive coating or surface which appeared to be rigid with respect to abrasion and grey with respect to coloration.
Type: Grant
Filed: August 22, 1974
Issued: February 3, 1976
Assignee: The United States of America as represented by the Secretary of Agriculture
Inventors: Truman L. Ward, Ruth R. Benerito