Patents Assigned to Avtex Fibers Inc.
  • Alloy rayon fibers of regenerated cellulose and copolymeric acrylic acid salts
    Patent number: 4399255
    Abstract: Alloy rayon fiber of regenerated cellulose and an at least partially neutralized copolymer of acrylic or methacrylic acid and a comonomer selected from an hydroxyalkyl (C.sub.2 -C.sub.6) ester of such acid or a styrenic monomer. The copolymer is present in an amount effective to increase the fluid holding capacity of the fiber. Masses of the fibers are useful as surgical dressings, tampons and other fluid-absorbing articles.
    Type: Grant
    Filed: September 10, 1982
    Date of Patent: August 16, 1983
    Assignees: Avtex Fibers Inc., Rohm & Haas Co.
    Inventors: Frederick R. Smith, Walter W. Toy, David Witiak
  • Method of making viscose rayon
    Patent number: 4388260
    Abstract: A crimped, high wet modulus viscose rayon fiber having a multilobular, skin core cross-section wherein the core is surrounded by a discontinuous broken skin that imparts to fabrics an improved cover and hand properties. The fibers are formed from a modifier-free viscose. The elimination of the modifier reduces manufacturing costs and eliminates an environmental pollution problem created in the discharge of spinning baths containing modifiers.
    Type: Grant
    Filed: January 8, 1981
    Date of Patent: June 14, 1983
    Assignee: Avtex Fibers Inc.
    Inventor: Gregory C. Bockno
  • Flame-retardant polyester fiber compositions
    Patent number: 4295886
    Abstract: Flame-retardant polyester fibers containing 5 to 20% by weight of 3,9-diphenyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane-3,9-dioxide , a novel compound, as the sole frame-retardant additive or a two-component additive comprising the aforesaid spirophosphonate in admixture with 20 to 80% of certain polychlorinated or polybrominated diaryl compounds.
    Type: Grant
    Filed: October 9, 1973
    Date of Patent: October 20, 1981
    Assignee: Avtex Fibers Inc.
    Inventor: John T. Gresham
  • High fluid-holding alloy rayon fiber mass
    Patent number: 4289824
    Abstract: Article of manufacture comprising alloy fibers having high fluid-holding capacity, the alloy fibers being comprised of a matrix of regenerated cellulose having carboxymethylcellulose uniformly dispersed therein, the latter being the sole additive for increasing the fluid holding capacity of the fibers.
    Type: Grant
    Filed: October 5, 1979
    Date of Patent: September 15, 1981
    Assignee: Avtex Fibers Inc.
    Inventor: Frederick R. Smith
  • Fibers of high fluid holding capacity
    Patent number: 4273118
    Abstract: Alloy fibers having high fluid-holding capacity, and a method for making the same, the alloy fibers being comprised of a matrix of regenerated cellulose having 5 to 25 weight percent of alkali metal salts of cellulose sulfate being dispersed therein. The sulfate salts may be present in combination with anionic polymer. The high fluid-holding capacity is at least 4.8 ml per grams as measured by the Demand Absorption Test.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: June 16, 1981
    Assignee: Avtex Fibers Inc.
    Inventor: Frederick R. Smith
  • Viscose rayon
    Patent number: 4245000
    Abstract: A crimped, high wet modulus viscose rayon fiber having a multilobular, skin core cross-section wherein the core is surrounded by a discontinuous broken skin that imparts to fabrics an improved cover and hand properties. The fibers are formed from a modifier-free viscose. The elimination of the modifier reduces manufacturing costs and eliminates an environmental pollution problem created in the discharge of spinning baths containing modifiers.
    Type: Grant
    Filed: March 16, 1979
    Date of Patent: January 13, 1981
    Assignee: Avtex Fibers Inc.
    Inventor: Gregory C. Bockno
  • Viscose rayon and method of making same
    Patent number: 4242405
    Abstract: High wet modulus viscose rayon fiber having a skin core structure and having a multi-lobular cross-section that imparts to fabrics an improved cover and hand properties similar to those of cotton. The fibers are formed from a modifier-free viscose. The elimination of the modifier reduces manufacturing costs and eliminates an environmental pollution problem created in the discharge of spinning baths containing modifiers.
    Type: Grant
    Filed: January 15, 1979
    Date of Patent: December 30, 1980
    Assignee: Avtex Fibers Inc.
    Inventor: Gregory C. Bockno
  • Alloy rayon
    Patent number: 4199367
    Abstract: Alloy rayon staple fibers containing about 15 to 35% sodium carboxymethylcellulose based on the weight of cellulose ("b.o.c.") and having high fluid holding capacity at least 5.5 cc per gram (such as in the range of up to about 7 cc/g) measured by the Syngyna test.
    Type: Grant
    Filed: April 22, 1977
    Date of Patent: April 22, 1980
    Assignee: Avtex Fibers Inc.
    Inventor: Frederick R. Smith
  • Alloy rayon fibers having dispersed therein an amide polymer and a polyacrylic acid salt
    Patent number: 4179416
    Abstract: Alloy fibers having high fluid-holding capacity, and a method for making the same, the alloy fibers being comprised of a matrix of regenerated cellulose having polyvinylpyrrolidone dispersed therein. The polyvinylpyrrolidone may be present in combination with an anionic polymer.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: December 18, 1979
    Assignee: Avtex Fibers Inc.
    Inventor: Frederick R. Smith
  • Cationic dyeable copolyesters
    Patent number: 4161577
    Abstract: Copolyester resins comprising the condensation polymerization product of (a) an aromatic dicarboxylic acid or its lower dialkyl ester (b) an aliphatic glycol and a minor amount of a substituted aromatic acid ester represented by the formula: ##STR1## where R is a lower alkyl radical having 1 to 4 carbon atoms and M is an alkali metal from the group consisting of sodium, potassium, and lithium.
    Type: Grant
    Filed: November 24, 1972
    Date of Patent: July 17, 1979
    Assignee: Avtex Fibers Inc.
    Inventors: John A. Price, Hugo Stange
  • Rayon fibers containing starch
    Patent number: 4144079
    Abstract: Rayon fibers made by spinning a viscose containing dissolved starch. Starch grains may be slurried in water, then made alkaline with NaOH to form a solution and then added to viscose.
    Type: Grant
    Filed: June 30, 1977
    Date of Patent: March 13, 1979
    Assignee: Avtex Fibers Inc.
    Inventor: Frederick R. Smith
  • Tray support for shipping wound material packages
    Patent number: 4141447
    Abstract: The shipping support tray of this invention comprises a single containerboard element containing integral members cut in the board to form a plurality of interlocking post elements for supporting and positioning tubes of wound yarn in a spaced relationship during shipment. The one element serves as both a base and top tray support.
    Type: Grant
    Filed: March 10, 1978
    Date of Patent: February 27, 1979
    Assignee: Avtex Fibers Inc.
    Inventor: Russell L. Anderson
  • Fibers of high fluid-holding capacity
    Patent number: 4136697
    Abstract: Alloy fibers having high fluid-holding capacity, and a method for making the same, the alloy fibers being comprised of a matrix of regenerated cellulose having polyvinylpyrrolidone dispersed therein. The polyvinylpyrrolidone may be present in combination with an anionic polymer.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: January 30, 1979
    Assignee: Avtex Fibers Inc.
    Inventor: Frederick R. Smith
  • Crimped, high-strength rayon yarn and method for its preparation
    Patent number: 4121012
    Abstract: A crimped, high-strength regenerated cellulose yarn of filaments having a broken skin-core cross-sectional structure of which the skin comprises at least about 20 up to about 40% of the cross-sectional area, the peripheral skin surface is substantially smooth and the core section is "blown-out;" and a method of preparing the yarn from a specified viscose and spinning bath wherein the formed yarn is highly stretched and then crimped in the relaxed state in a plasticizing medium.
    Type: Grant
    Filed: February 6, 1976
    Date of Patent: October 17, 1978
    Assignee: Avtex Fibers Inc.
    Inventor: Gregory C. Bockno
  • Flame retardant regenerated cellulose filaments containing cross-linked polymeric phosphazenes
    Patent number: 4111701
    Abstract: Flame-retarded regenerated cellulose filaments and filamentary articles having dispersed therein polymeric phosphazenes with P-O-P oxygen linkages that are prepared through the condensation of alkyl esters of phosphorus acids with acid halides of phosphorus acids with elimination of alkyl halides; and method for their preparation.
    Type: Grant
    Filed: October 1, 1976
    Date of Patent: September 5, 1978
    Assignee: Avtex Fibers Inc.
    Inventors: Borivoj Richard Franko-Filipasic, Edward F. Orwoll, Vithal C. Patel
  • Copolyesters of ethylene 2,6-naphthalene dicarboxylate and halogenated comonomers
    Patent number: 4101528
    Abstract: A flame-retardant filament-forming copolymer of at least 75 mol % of ethylene-2,6-naphthalene dicarboxylate units and at least 3 mol % up to 25 mol % of randomly copolymerized esters units having bromine or chlorine chemically united with either the diacid residue or both the diacid residue and the diol residue of said ester units. In addition, fibers of the above flame-retardant copolyester resin and flame-retardant cellulosic fibers are blended together to provide flame-retardant yarns and fabrics of excellent physical properties.
    Type: Grant
    Filed: June 16, 1977
    Date of Patent: July 18, 1978
    Assignee: Avtex Fibers Inc.
    Inventor: William N. Knopka
  • Method for producing a high modulus polyester yarn
    Patent number: 4082731
    Abstract: Method taught for producing a high modulus yarn of filaments of a polyester resin consisting of at least 15 up to 50 mole percent of bibenzoate units and from 85 to 50 mole percent of terephthalate units, said yarn having been uniformly oriented and then heat-set while free-to-relax.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: April 4, 1978
    Assignee: Avtex Fibers Inc.
    Inventor: William N. Knopka
  • Absorbent mass of alloy fibers of regenerated cellulose and polyacrylic acid salt of alkali-metals or ammonium
    Patent number: RE30029
    Abstract: A mass of alloy fibers of polyacrylic acid salt of alkali-metals or ammonium and regenerated cellulose, useful for absorbing fluids, are prepared by mixing a caustic solution of polyacrylic acid with viscose, spinning the mixture into fibers and obtaining dry fibers in the alkaline state. The fibers are advantageously dried with an alkaline lubricating finish thereon and then processed into dressings, sanitary napkins, tampons and diapers.
    Type: Grant
    Filed: August 27, 1975
    Date of Patent: June 12, 1979
    Assignee: Avtex Fibers Inc.
    Inventor: Frederick R. Smith
  • Rayon fibers containing starch
    Patent number: RE31380
    Abstract: Rayon fibers made by spinning a viscose containing dissolved starch. Starch grains may be slurried in water, then made alkaline with NaOH to form a solution and then added to viscose.
    Type: Grant
    Filed: September 23, 1980
    Date of Patent: September 13, 1983
    Assignee: Avtex Fibers Inc.
    Inventor: Frederick R. Smith
  • Viscose rayon
    Patent number: RE31457
    Abstract: A crimped, high wet modulus viscose rayon fiber having a multilobular, skin core cross-section wherein the core is surrounded by a discontinuous broken skin that imparts to fabrics an improved cover and hand properties. The fibers are formed from a modifier-free viscose. The elimination of the modifier reduces manufacturing costs and eliminates an environmental pollution problem created in the discharge of spinning baths containing modifiers.
    Type: Grant
    Filed: June 21, 1982
    Date of Patent: December 6, 1983
    Assignee: Avtex Fibers Inc.
    Inventor: Gregory C. Bockno