Patents Assigned to Union Camp Corporation
  • Stabilized rosin esters and hot melt adhesives containing them
    Patent number: 5019167
    Abstract: Improved rosin ester compositions are provided having diminished tendency toward hazing concomitant with good viscosity stability when employed in adhesive systems such as hot melt adhesive systems. Addition of zinc composition to rosin ester formulations in an effective amount serves to secure these improvements. Zinc oxide, zinc hydroxide and zinc salts of organic acids are suitable for employment with zinc resinates being preferred in accordance with the practice of certain embodiments.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: May 28, 1991
    Assignee: Union Camp Corporation
    Inventors: Robert W. Johnson, Jr., Kenneth E. Krajca
  • Processes for the conversion of myrcene to nerol and citral
    Patent number: 5017726
    Abstract: A novel process for converting myrcene to a key palladium-myrcene complex using palladium (II) chloride in the presence of an aqueous cycloamide solvent and lithium salt is disclosed. Novel processes for converting the palladium-myrcene complex to citral using a phosphine compound, or to nerol using a nitrogen-donor compound in the presence of hydrogen gas, are also presented.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: May 21, 1991
    Assignee: Union Camp Corporation
    Inventor: James B. Woell
  • Halter top bag
    Patent number: 5011298
    Abstract: The invention is of a halter top, thermoplastic resin film bag which is an improvement over the T-shirt type of bag, in that the base area where the gussets are sealed is strengthened by the trapezoidal configuration given to the bag of the invention.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: April 30, 1991
    Assignee: Union Camp Corporation
    Inventors: Ajit K. Bose, Kurt F. Strater
  • Extrusion coated substrates with separable and removable layers
    Patent number: 5009831
    Abstract: Processes for extruding thermoplastic coatings on substrates are provided by this invention. The processes include directing a substrate between two pressure roll means wherein one of the pressure roll means has a temperature less than the melting point of the thermoplastic. Next, the processes include providing a molten curtain of thermoplastic which is then directed with a current of a fluid medium, such as compressed air, so as to cause at least a first portion of the molten curtain to contact the first pressure roll means for a time sufficient to form a thermoplastic sheet. Next, the processes include extruding at least this thermoplastic sheet with the substrate between the two pressure roll means so as to form an extruded substrate having a thermoplastic layer which is separable from the substrate.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: April 23, 1991
    Assignee: Union Camp Corporation
    Inventor: Eran Turi
  • Multiwall bag and method of packaging utilizing multiwall bags
    Patent number: 5007233
    Abstract: A multiwall bag and method of packaging using a multiwall bag are described. The multiwall bag includes an outer paper bag having an uncoated inner surface. One or more thermoplastic bags containing one or more bulk materials are ultrasonically sealed closed, simultaneously green tacking a small portion of the outer surface of such thermoplastic bags to the inner surface of the paper bag. The open end of the paper bag is then closed and folded back on itself with a small amount of adhesive being applied to keep the paper bag closed. As a result, the paper bag is easily opened and the thermoplastic bags can be quickly removed therefrom for wholesale use in compatible processes.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: April 16, 1991
    Assignee: Union Camp Corporation
    Inventor: Ajit K. Bose
  • Tetracarboxylic acids
    Patent number: 5001260
    Abstract: A process for polymerizing unsaturated dicarboxylic acids comprises heating the acids in the presence of a catalytic proportion of an unactivated clay and water. The product dimer is distilled to separate unreacted monomer acids. The product dimers of 36, 40 and 44 content are useful as corrosion inhibitors, epoxy resin curing agents, lubricants and intermediates for synthetic polymeric resins and polymeric resin plasticizers.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: March 19, 1991
    Assignee: Union Camp Corporation
    Inventor: Kathryn S. Hayes
  • Hot-fill polyethylene bags
    Patent number: 4994324
    Abstract: This invention is directed to polyethylene bags or film. More particularly, this invention is directed to a sealable transparent film structure for hot-fill having one or more layers, at least one layer comprising a blend of(a) from about 20 to 50 parts by weight of a terpolymer of ethylene, propylene, and butene or hexene, or from about 20 to 50 parts by weight of a propylene modified rubber and 3% maleic anhydride,(b) from about 20 to 75 parts by weight of polypropylene, and(c) from about 20 to 75 parts by weight of Hmw-HDPE resin.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: February 19, 1991
    Assignee: Union Camp Corporation
    Inventors: Ajit K. Bose, Kurt F. Strater
  • Dipentene acrylic acid imidazolines and their use as corrosion inhibitors
    Patent number: 4994575
    Abstract: Imidazolines of the formula: ##STR1## wherein n is a whole number integer of from 1 to 6, are metal corrosion inhibitors.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: February 19, 1991
    Assignee: Union Camp Corporation
    Inventor: Ewa A. Bardasz
  • Method for determining amplitude and frequency of web flutter
    Patent number: 4992142
    Abstract: An apparatus and method for determining the frequency and amplitude of flutter of a moving web in a web manufacturing operation, is shown to include a sensor for sensing the pressure of air in a region proximate the web and for generating a pressure signal reflective of the air pressure and a signal processor, connected to receive the pressure signal, for determining the amplitudes and frequencies of the flutter from the pressure signal and for generating an indication signal representative of the flutter amplitude and frequency.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: February 12, 1991
    Assignee: Union Camp Corporation
    Inventor: Dong D. Nguyen
  • Radiation-curable aminoamide acrylate polymer
    Patent number: 4987160
    Abstract: A radiation-curable resin useful as a hot melt adhesive is made by the Michael addition of the amino functional groups of an aminoamide thermoplastic polymer with a portion of the acrylate groups of a polyol acrylate. A photoinitiator is optionally added.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: January 22, 1991
    Assignee: Union Camp Corporation
    Inventors: Charles R. Frihart, Ronald J. Wroczynski
  • Processes for the conversion of myrcene to citral
    Patent number: 4978804
    Abstract: A novel process for converting myrcene to citral using palladium (II) chloride in the presence of an inert aqueous alkylamide solvent and a metal oxoanionic salt at a temperature of at least about 80.degree. C. is disclosed. A novel process for converting a palladium-myrcene complex to citral using a metal oxoanionic salt in the presence of an inert aqueous organic solvent is also disclosed.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: December 18, 1990
    Assignee: Union Camp Corporation
    Inventor: James B. Woell
  • Beta-phellandrene-maleic anhydride copolymers
    Patent number: 4975503
    Abstract: Copolymerization of beta-phellandrene with maleic anhydride, preferably in the presence of a free radical initiator such as AIBN, to form high molecular weight polymers (weight average molecular weight over 1,000) is disclosed. The polymerization may be conducted at a temperature up to about 190.degree. C., preferably in the range of about 40.degree. to 130.degree. C., preferably in the presence of a polar solvent.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: December 4, 1990
    Assignee: Union Camp Corporation
    Inventor: David W. Parker
  • Thermally-curable aminoamide acrylate polymer
    Patent number: 4975498
    Abstract: A thermally-curable acrylate-modified aminoamide resin is the Michael addition product of an aminoamide thermoplastic polymer with a polyol ester having multiple acrylate groups, to which is added a free radical curing initiator.
    Type: Grant
    Filed: December 14, 1988
    Date of Patent: December 4, 1990
    Assignee: Union Camp Corporation
    Inventor: Charles R. Frihart
  • Isoterpinolene-maleic anhydride copolymers
    Patent number: 4975504
    Abstract: Copolymerization of isoterpinolene with maleic anhydride, preferably in the presence of a free radical initiator such as AIBN, to form high molecular weight (weight average molecular weight over 1000) polymers is disclosed. The polymerization may be conducted at a temperature up to about 190.degree. C., preferably in the range of about 40.degree. to 130.degree. C., preferably in the presence of a polar solvent.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: December 4, 1990
    Assignee: Union Camp Corporation
    Inventor: David W. Parker
  • Apparatus for determining amplitude and frequency of web flutter
    Patent number: 4968386
    Abstract: An apparatus and method for determining the frequency and amplitude of flutter of a moving web in a web manufacturing operation, is shown to include a sensor for sensing the pressure of air in a region proximate the web and for generating a pressure signal reflective of the air pressure and a signal processor, connected to receive the pressure signal, for determining the amplitudes and frequencies of the flutter from the pressure signal and for generating an indication signal representative of the flutter amplitude and frequency.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: November 6, 1990
    Assignee: Union Camp Corporation
    Inventor: Dong D. Nguyen
  • Real time mottle measuring device and method
    Patent number: 4966455
    Abstract: Devices and methods for measuring mottle of paper-like materials are provided. the invention includes directing a radiation over a paper-like material and scanning it in a plurality of directions. Radiation scattered by the paper-like material is detected to produce an output. This output is processed to provide a reading proportional to the mottle of the paper-like material. The invention uses electro-optical devices and signal processing to quantify mottle as an appearance property. Gloss measurements of the paper-like material can also be quantified and simultaneously displayed.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: October 30, 1990
    Assignee: Union Camp Corporation
    Inventors: Eitan Avni, Sal A. Pace
  • Copolymer of resin acids and maleic anhydride
    Patent number: 4963630
    Abstract: Copolymerization of maleic anhydride with the resin acids present in rosin, especially abietic-type resin acids (e.g., abietic acid and neoabietic acid), to form high molecular weight copolymers is disclosed. The polymerization is carried out in the presence of a free radical initiator such as AIBN. The temperature can range up to about 190.degree. C. and a solvent such as THF can also be present.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: October 16, 1990
    Assignee: Union Camp Corporation
    Inventor: David W. Parker
  • Novel water-based ink composition
    Patent number: 4963188
    Abstract: Novel water-based ink compositions, suitable as flexographic and gravure inks, are disclosed which incorporate high molecular weight resin acid-maleic anhydride polymers. The ink compositions of this invention comprise a coloring agent and a resin vehicle which comprises an aqueous solution of the reaction product of rosin and maleic anhydride in the presence of a free radical polymerization initiator.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: October 16, 1990
    Assignee: Union Camp Corporation
    Inventor: David W. Parker
  • Method of improving the color of tall oil rosin esters by recrystallizing and distilling rosin followed by esterifying
    Patent number: 4962186
    Abstract: A method of improving the color of tall oil rosin esters comprising the sequential steps of (a) recrystallizing a tall oil rosin from a solvent, (b) purifying the crystalline portion by distillation, and (c) esterifying the resultant rosin with a polyol.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: October 9, 1990
    Assignee: Union Camp Corporation
    Inventor: Robert W. Johnson, Jr.
  • Thermal insulation batt
    Patent number: 4952441
    Abstract: A thermal insulation batt is provided which is comprised of a layer of bulk thermal insulation material; a vapor impervious thermoplastic facing sheet adhesively bonded to the layer of insulation material; paper tabs containing a fold line securely attached along each of longitudinal sides of the facing sheet or by having dual foldable paper strips enclosed within a folded back portion of the facing sheet so as to provide a deadfold characteristic for the tabs. The insulation batts are conveniently packaged with the dual tabs folded downwardly adjacent the facing sheet, and at installation the dual tabs are folded outwardly without snapback and are attached onto spaced apart structure members such as studs of a wall.
    Type: Grant
    Filed: February 9, 1988
    Date of Patent: August 28, 1990
    Assignee: Union Camp Corporation
    Inventors: Ajit K. Bose, Joseph J. Schulte