Patents Represented by Attorney, Agent or Law Firm William L. Krayer
  • Incorporation of functional groups in polymers
    Patent number: 5294679
    Abstract: New polymers are disclosed to be made in supported Ziegler-Natta systems. They include monomers exhibiting polar functionality such as through a hydroxyl group or other functional group protected during polymerization in the presence of highly active catalysts by the use of a protective alkyl silane group which is removed after polymerization to restore the functionality of the group. The typical polymer thus made is a polyolefin having functional groups on its backbone; the functional groups may be reacted with conventional dyes and/or may perform other functions and enter reactions with other reactive compounds.
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: March 15, 1994
    Assignee: Aristech Chemical Corporation
    Inventors: Andrew J. Sivak, Leonard A. Cullo
  • Laminating resins having low organic emissions
    Patent number: 5292841
    Abstract: A laminating resin comprising (A) an acrylated or methacrylated cycloaliphatic epoxide, (B) an acrylated or methacrylated alkoxylated bisphenol-A, in a weight ratio of (A) to (B) of about 3 to 1 to about 1 to 5, and (C) about 5% to about 50%, based on the total composition, cyclohexyl methacrylate. Vinyl toluene and ethylene glycol dimethacrylate are also used to modify certain properties of the resin.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: March 8, 1994
    Assignee: Aristech Chemical Corporation
    Inventors: Thomas W. Smeal, George L. Brownell
  • Inhibiting the growth of zebra mussels
    Patent number: 5288409
    Abstract: Growth of zebra mussels on a surface is inhibited by making the surface from an unsaturated polyester having copolymerized therein about 1-40% N-phenyl maleimide.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: February 22, 1994
    Assignee: Aristech Chemical Corporation
    Inventors: Richard P. Herrle, Virginia Piermattie
  • Filler and artificial stone made therewith
    Patent number: 5286290
    Abstract: Alumina trihydrate is dehydrated and rehydrated with a solution of dye, then dried to make colored alumina trihydrate which is distributed in a resin matrix to make solid decorative materials, such as artificial granite having excellent fire retardance.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: February 15, 1994
    Assignee: Avonite, Inc.
    Inventor: Lon F. Risley
  • Bis (diallylamino) silanes
    Patent number: 5280094
    Abstract: Bis(diallylamino) silanes of the formula ##STR1## where R.sup.1 and R.sup.2 are lower alkyl or phenyl groups are copolymerized with lower olefins and desilylated to exhibit amine functionality; they are receptive to dyes.
    Type: Grant
    Filed: February 11, 1993
    Date of Patent: January 18, 1994
    Assignee: Aristech Chemical Corporation
    Inventor: Steven E. Mulhall
  • Silyl derivatives of eugenol
    Patent number: 5266663
    Abstract: Silyl derivatives of eugenol include compositions of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are independently selected from linear, branched, and cyclic hydrocarbon groups having a total of from one to about eight carbon atoms, except that where one of R.sup.1, R.sup.2 or R.sup.3 is a phenyl group, the total of carbon atoms must be at least nine. They may be made by silylating the corresponding hydroxyl compound. They are useful as comonomers for olefins to introduce functional sites and may be copolymerized in Ziegler-Natta catalyst systems.
    Type: Grant
    Filed: August 5, 1992
    Date of Patent: November 30, 1993
    Assignee: Aristech Chemical Corporation
    Inventors: Mary K. Haus, Andrew J. Sivak
  • Bis(diallylamino) silanes
    Patent number: 5258533
    Abstract: Bis(diallylamino) silanes of the formula ##STR1## where R.sup.1 and R.sup.2 are lower alkyl or phenyl groups. The silanes may be homopolymerized or copolymerized with lower olefins and desilylated to exhibit amine functionality.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: November 2, 1993
    Assignee: Aristech Chemical Corporation
    Inventor: Steven E. Mulhall
  • Method of making amine/propylene copolymers
    Patent number: 5248737
    Abstract: Mono and diallyl amines are silylated to protect them from reacting with high activity Ziegler-Natta catalysts so they may be copolymerized with propylene; also disclosed are copolymers of such amines with propylene and their hydrolyzed or alcoholyzed counterparts.
    Type: Grant
    Filed: August 5, 1992
    Date of Patent: September 28, 1993
    Assignee: Aristech Chemical Corporation
    Inventors: Andrew J. Sivak, Leonard A. Cullo, William L. Krayer
  • Two-stage cleavage of cumene hydroperoxide
    Patent number: 5245090
    Abstract: This invention is an improved two-stage method for producing phenol and acetone from cumene hydroperoxide (CHP) comprising decomposing cumene hydroperoxide in a first stage, and subjecting the product of the first stage to hydrogenation in a second stage; residual cumene hydroperoxide may be decomposed in the second stage, with or without recycling of acetone and/or part of the effluent of the second stage back to the first stage; cumene is also desirably recycled.
    Type: Grant
    Filed: September 11, 1992
    Date of Patent: September 14, 1993
    Assignee: Aristech Chemical Corporation
    Inventors: Anthony J. DeCaria, Alain A. Schutz
  • Acrylic-filled thermoformable acrylic sheet
    Patent number: 5242968
    Abstract: A monomer-rich acrylic syrup is cast including about 10% to about 20% ground acrylic particles. During curing, the particles absorb over half their weight in monomer, and a cured sheet is formed in which the matrix monomer and uncrosslinked polymer form a phase which extends through the particles, while the particles appear to be fused together. Including a crosslinker in the syrup further insures the interpenetration of the matrix phase into the swollen particles. A textured surface is formed, which is useful as an anti-slip surface in bathtubs and shower stalls, after thermoforming.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: September 7, 1993
    Assignee: Aristech Chemical Corporation
    Inventors: Ettore Minghetti, John E. Eitel
  • Amine/propylene copolymers
    Patent number: 5239030
    Abstract: Mono and diallyl amines are silylated to protect them from reacting with high activity Ziegler-Natta catalysts so they may be copolymerized with propylene; copolymers of such amines with propylene and their hydrolyzed or alcholyzed counterparts; also the amine monomers disclosed.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: August 24, 1993
    Assignee: Aristech Chemical Corporation
    Inventors: Andrew J. Sivak, Leonard A. Cullo, William L. Krayer
  • Catalyst and process for making aniline from phenol
    Patent number: 5214210
    Abstract: Phenolic compounds, particularly phenol, are aminated by reaction with ammonia in the presence of a catalyst made by calcining bayerite.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: May 25, 1993
    Assignee: Aristech Chemical Corporation
    Inventors: Alain A. Schutz, Leonard A. Cullo
  • Method of maintaining subterranean formation permeability and inhibiting clay swelling
    Patent number: 5211239
    Abstract: Moulding and migration of subterranean clay is inhibited during stimulation of the production of hydrocarbon fluids, and preparation therefor, by treating said formations with a compound of the formula (CH.sub.2 .dbd.CH-CH.sub.2).sub.n N+(CH.sub.3).sub.4-n X.sup.- where X may be any anion which does not adversely react with the formation or treatment fluid and n is an integer from 1 to 4.
    Type: Grant
    Filed: February 13, 1992
    Date of Patent: May 18, 1993
    Assignee: Clearwater, Inc.
    Inventors: Todd R. Thomas, Kevin W. Smith
  • Inhibiting color change in cumene hydroperoxide
    Patent number: 5202498
    Abstract: Undesirable color change in freshly manufactured cumene hydroperoxide is inhibited by treatment comprising adding sodium hydroxide in an effective amount up to about 120 ppm and holding the treated cumene hydroperoxide at a temperature of about 50.degree. C. to about 70.degree. C. for 0.5 to two hours; optionally the cumene hydroperoxide so treated in the higher end of this caustic range is further treated with a wiped-film evaporator.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: April 13, 1993
    Assignee: Aristech Chemical Corporation
    Inventor: Carole L. Elias
  • Method of making isophorne
    Patent number: 5202496
    Abstract: Magnesium/aluminum synthetic anionic clay catalysts are made by spray-drying a slurry of a Mg/Al synthetic clay, making a plasticized mixture of the spray-dried clay with diatomaceous earth, forming, drying and calcining the formed dried mixture. The catalyst is useful for making isophorone by the condensation of acetone.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: April 13, 1993
    Assignee: Aristech Chemical Corporation
    Inventors: Alain A. Schutz, Leonard A. Cullo
  • Polymethylmethacrylate syrup as medium for liquid crystals
    Patent number: 5200107
    Abstract: Polymer dispersed liquid crystals are made by mixing liquid crystals into a syrup of polymethylmethacrylate dissolved in polymerizable monomers comprising methyl methacrylate, and polymerizing to monomers, to obtain finely dispersed micelles of liquid crystals which change refractive index in response to an electric field.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: April 6, 1993
    Assignee: Aristech Chemical Corporation
    Inventors: Virginia Piermattie, Sharon J. Elliot
  • Diallyl silyl amines
    Patent number: 5200542
    Abstract: Mono and diallyl amines are silylated to protect them from reacting with high activity Ziegler-Natta catalysts so they may be copolymerized with propylene; copolymers of such amines with propylene and their hydrolyzed or alcholyzed counterparts; also the amine monomers disclosed.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: April 6, 1993
    Assignee: Aristech Chemical Corporation
    Inventors: Andrew J. Sivak, Leonard A. Cullo, William L. Krayer
  • Biscuit joiner attachment for radial arm saw
    Patent number: 5193595
    Abstract: An attachment for a radial arm saw to enable biscuit slot cutting includes a separate housing on said radial arm, means for attaching a biscuit slot blade, means for transmitting power to said blade from said radial arm, and means for manipulating said housing with said biscuit slot blade independently of said radial arm.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: March 16, 1993
    Inventors: Clyde R. Johnson, Jerry Katrencik, Dennis W. Standiford
  • Manufacture of neopentyl glycol (IIA)
    Patent number: 5185478
    Abstract: Neopentyl glycol is made by reacting isobutyraldehyde with paraformaldehyde in the presence of a tertiary amine and cadmium or yttrium oxide; then hydrogenating the resulting reaction mixture containing hydroxypivaldehyde and at least about 20% 3-hydroxy-2,2-dimethylpropylhydroxypivalate.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: February 9, 1993
    Assignee: Aristech Chemical Corporation
    Inventors: Jeffrey S. Salek, Joseph Pugach
  • Process for making efficient anionic clay catalyst, catalysts made thereby, and method of making isophorone
    Patent number: 5153156
    Abstract: Mangesium/aluminum synthetic anionic clay catalysts are made by spray-drying a slurry of a Mg/Al synthetic clay, making a plasticized mixture of the spray-dried clay with diatomaceous earth, forming, drying and calcining the formed dried mixture. The catalyst is useful for making isophorone by the condensation of acetone.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: October 6, 1992
    Assignee: Aristech Chemical Corporation
    Inventors: Alain A. Schutz, Leonard A. Cullo