Abstract: A high elongation, low 100% modulus composition comprises a copolymer dispersed in a continuous phase polysiloxane. The copolymer is made from high amounts of at least a monomer which is capable of forming a low Tg polymer and relatively low amounts of at least a monomer which is capable of forming a high Tg polymer. The monomer forming the low Tg polymer can be an alkyl acrylate whereas the monomers forming the high Tg polymer can be a vinyl ester, an acrylonitrile or derivatives thereof, a vinyl substituted aromatic such as styrene, an alkyl methacrylate, and the like. The composition has good adhesion to substrates as well as good viscosity aging, and can be utilized in caulks or sealants.
Abstract: A catalyst system and a process for the bulk addition polymerization or of polycyclic olefins, such as norbornene, methylnorbornene, ethylnorbornene, butylnorbornene or hexylnorbornene, 1,2,3,4,4a,5,8,8a-octahydro-1,4:5,8-dimethanonapthalene, 5,5′-(1,2-ethanediyl)bisbicyclo[2.2.1]hept-2-ene, and 1,4,4a,4b,5,8,8a,8b-octahydro-1,4:5,8-dimethanobiphenylene are disclosed. The catalyst includes an organonickel or organopalladium transition metal procatalyst and an activator compound. Polymerization can be carried out in a reaction injection molding process to yield thermoplastic and thermoset molded polymeric articles possessing high glass transition temperatures.
Type:
Grant
Filed:
December 8, 1999
Date of Patent:
February 26, 2002
Assignee:
The B. F. Goodrich Company
Inventors:
Andrew Bell, Larry F. Rhodes, Brian L. Goodall, John C. Fondran
Abstract: The present invention relates to a medium density chlorinated polyvinyl chloride foam and the method of preparing such a foam. The foam having a specific gravity in the range of about 0.3 to about 1.5 comprises chlorinated polyvinyl chloride, a nitrogen containing decomposition type blowing agent, a tin stabilizer, a costabilizer and a high molecular weight process aid.
Abstract: An implant device which includes a structure implantable within a living animal and a sensor included as part of the structure. The sensor is operatively configured to detect accretion of biological material on the sensor by producing an output which varies as a function of the accretion of biological material on the sensor. A communication element is further included as part of the structure and is operatively coupled to the output of the sensor. The communication element is configured to communicate information based on the output of the sensor wirelessly to a remote element located outside the living animal.
Type:
Grant
Filed:
June 14, 2000
Date of Patent:
December 18, 2001
Assignee:
PMD Holdings Corporation
Inventors:
Eric M. Weissman, William B. Spillman, Jr., Elmer D. Dickens, Jr.
Abstract: An emulsion or suspension polymer comprising a vinyl chloride polymeric core and an acrylic ester-acrylonitrile polymeric shell is disclosed. The emulsion polymer is preferably prepared using a two-stage process. In the first stage, a vinyl chloride monomer is polymerized or copolymerized to form a first phase of a polymeric hard core having a relatively high chlorine content. In a second stage, the soft acrylic ester—acrylonitrile copolymer is made in situ in a reaction mixture comprising the first phase. The product provides both flame retardancy and low MFFT, and is useful in a variety of coating and binding applications.
Abstract: Blocky chlorinated polyolefins are disclosed as compatibilizers of PVC and/or CPVC resins with polyolefin elastomers. The blocky chlorinated polyolefins facilitate the dispersion of the elastomers as a dispersed phase with the proper size for impact modification of the PVC and/or CPVC. The blocky chlorinated polyolefin provides better adhesion between the elastomer and the PVC and/or CPVC providing better physical properties such as impact strength as measured by Notched Izod and variable height impact testing (VHIT) than did the randomly chlorinated polyolefins, often used as processing aids and as impact modifiers in PVC or CPVC. The differences in properties achieved with blocky chlorinated polyolefins versus randomly chlorinated polyolefins are attributed to the individual blocks of the blocky polyolefin being compatible (and/or co-crystalizable) with either the polyolefin elastomer or the PVC/CPVC resulting in better adhesion between phases.
Type:
Grant
Filed:
August 4, 1999
Date of Patent:
November 6, 2001
Assignee:
PMD Group Inc.
Inventors:
Bernard F. Cinadr, Carole A. Lepilleur, Arthur L. Backman
Abstract: An analyzer apparatus and method is provided for analyzing restenosis associated with a stent implanted within a living body. The apparatus includes an input for receiving ultrasonic data from an ultrasonic imaging apparatus; digital memory for storing the ultrasonic data at least temporarily; a processor for analyzing the ultrasonic data, the processor being configured to analyze the data in accordance with at least one predefined criteria to diagnose a degree of restenosis experienced by the stent; and an output for outputting information indicative of the diagnosis.
Type:
Grant
Filed:
February 24, 2000
Date of Patent:
October 30, 2001
Assignee:
PMD Holdings Corp.
Inventors:
Eric M. Weissman, Elmer D. Dickens, Jr., William B. Spillman, Jr.
Abstract: The present invention relates to a halogen containing polymer compound containing a modified zeolite stabilizer. The modified zeolite stabilizer has a small particle diameter, narrow particle size distribution and less than 10 weight percent water. The modified zeolite stabilizer is formed by shock annealing, coating or a combination of the two methods.
Type:
Grant
Filed:
September 10, 1998
Date of Patent:
October 23, 2001
Assignee:
PMD Holdings Corporation
Inventors:
Carole A. Lepilleur, Anthony M. Mazany, David L. Milenius, Arthur L. Backman
Abstract: Copolymers containing repeating units polymerized from at least one polycyclic monomer and at least one acrylic monomer are disclosed. The copolymer is formed by addition polymerization in the presence of a Group VIII transition metal catalyst. The copolymers contain hydrocarbyl and/or functional substituents pendant from the polymer backbone. In one embodiment the copolymer contains pendant ester substituents containing acid labile groups. The copolymers are useful as resist materials that are sensitive to imaging radiation.
Type:
Grant
Filed:
June 30, 1999
Date of Patent:
October 16, 2001
Assignee:
The B. F. Goodrich Company
Inventors:
Brian Leslie Goodall, Lester Howard McIntosh, III
Abstract: Improved crosslinked ionic polymers or salts thereof having a soluble polymer fraction of less than about 15 wt %, and methods for making the same. The polymers are useful as bioadhesives, thickeners, emulsifiers, suspending aids, and pharmaceutical controlled release excipients.
Type:
Grant
Filed:
May 19, 1999
Date of Patent:
October 2, 2001
Assignee:
PMD Holdings Corp.
Inventors:
Nancy S. Marchant, Simon Hsaio-Pao Yu, Zahid Amjad
Abstract: A fluoropolymer composition, containing one or more fluoropolymers, is used in a polyurethane composition to facilitate extrusion of the polyurethane composition. The addition of the fluoropolymer composition to the polyurethane composition typically results in less build up in an extruder than would be produced without the fluoropolymer composition.
Type:
Grant
Filed:
December 9, 1999
Date of Patent:
October 2, 2001
Assignee:
The B. F. Goodrich Company
Inventors:
Kemal Onder, George Hunter Loeber, Joseph J. Vontorcik
Abstract: A multilayer composite pipe structure is described. The multilayer composite pipe comprises a hollow inner conduit, a first layer of adhesive, a metallic intermediate layer, a second layer of adhesive, as well as, the outer thermoplastic layer, respectively. The hollow inner conduit is made from any rigid thermoplastic material. The outer thermoplastic layer is made from a rigid, amorphous thermoplastic polymer. This multilayer composite pipe is pressure bearing. In one embodiment, the multilayer composite pipe is solvent cementable; whereas in another embodiment, the multilayer composite pipe is heat fusible. In still yet another embodiment of the invention, the multilayer composite pipe is bendable. Furthermore, the multilayer composite pipe can be used in a fluid conduit system with fittings with an optional insert.
Type:
Grant
Filed:
May 22, 1998
Date of Patent:
September 25, 2001
Assignee:
PMD Holdings Corp.
Inventors:
John C. Bushi, Girish T. Dalal, Thomas L. Evans, Andrew M. Olah, Theodore J. Schmitz, Andrew L. Auvil, A. Donald Meltzer, Stefanie Hahnen-Schroeder, Anthony Kordecki
Abstract: This invention relates to a blend of polymers having electrostatic dissipative properties. The blend in particular comprises a thermoplastic base polymer, electrostatic dissipative agent and acrylic ESD enhancer.
Type:
Grant
Filed:
April 15, 1997
Date of Patent:
September 4, 2001
Assignee:
The B.F. Goodrich Company
Inventors:
Timothy Edward Fahey, Robert Jay Coots, Gary Franklin Wilson
Abstract: A polymerization process for the preparation of (meth)acrylate containing homopolymers or block copolymers comprises heating a mixture of a free radical initiator, a stable free radical agent, and a polymerizable monomer compound to form a thermoplastic resin or resins with a narrow polydispersity. The stable free radical agent is a piperazinone or morpholone based nitroxide or any adducts thereof.
Type:
Grant
Filed:
March 31, 1997
Date of Patent:
August 28, 2001
Assignee:
PMD Holdings Corp.
Inventors:
John Ta-yuan Lai, William F. Masler, Paul Peter Nicholas, Nasar Pourahmady, Rutger D. Puts, Shonali Tahiliani
Abstract: Chlorinated polyvinyl chloride (CPVC) is prepared from polyvinyl chloride (PVC). When PVC is made utilizing polyvinyl alcohol, the low molecular weight CPVC compound so prepared is colored. A low molecular weight CPVC compound prepared from PVC that was made in the presence of a cellulose ether instead of polyvinyl alcohol resulted in a very low color compound having a DE of O by definition. However, a CPVC compound prepared from PVC made in the presence of polyvinyl alcohol resulted in a relatively high color (DE 18.51). During the polymerization of vinyl chloride, polyvinyl alcohol is replaced with the hydroxypropylmethyl cellulose ether having a methoxyl substitution of 15-35 percent and a hydroxypropoxyl substitution of from 4-35 percent.
Abstract: Block chlorinated polyolefins are disclosed as performance enhancer of high rubber graft copolymers or chlorinated polyethylenes impact modifier in PVC and/or CPVC resins. The block chlorinated polyolefins (e.g. block chlorinated polyethylene) provide good dispersion of the impact modifier particles in the matrix and better adhesion between the impact modifier and the PVC and/or CPVC interface, providing better physical properties such as impact strength as measured by Notched Izod than did the randomly chlorinated polyolefins, often used as processing aids and as impact modifiers in PVC or CPVC. The differences in properties achieved with block chlorinated polyolefins versus randomly chlorinated polyolefins are attributed to the individual blocks of the blocky polyolefin being compatible with either the impact modifier or the PVC/CPVC resulting in better adhesion between phases.
Type:
Grant
Filed:
September 29, 1999
Date of Patent:
August 21, 2001
Assignee:
PMD Holdings Corporation
Inventors:
Carole Angèle Lepilleur, Robert Edwin Detterman
Abstract: A method of preparing generally amorphous copolymers of ethylene and at least one norbornene (NB)-type comonomer. These polymers may be random or alternating, depending on the choice of catalyst and/or the relative ratio of the monomers used. This method comprises polymerizing said monomers in a diluent or in bulk in the presence of a cationic palladium catalyst resulting from reacting a chelating ligand with a palladium (II) compound. The catalysts employed in this invention may be represented by the formula:
wherein
X and Y each independently is a donor heteroatom selected from P, N, O, S and As or an organic group containing said heteroatoms, and the heteroatoms are bonded to the bridging group A;
A is a divalent group selected from an organic group and phosphorus forming together with X, Y and Pd a 4, 5, 6, or 7-membered ring, and preferably a 5-membered ring;
R is a hydrocarbyl group; and
CA is a weakly coordinating anion.
Type:
Grant
Filed:
June 9, 1998
Date of Patent:
July 24, 2001
Assignee:
The B. F. Goodrich Company
Inventors:
Brian Leslie Goodall, Lester Howard McIntosh, III
Abstract: The invention is directed to polymers containing a repeating unit derived from a norbornene sulfonamide. These may be addition polymers which include copolymers with one or more comonomers such as norbornene, ethylene, an acrylate or sulfur dioxide or carbon monoxide. Said monomers may be polymerized using single or multicomponent Group VIII catalysts. The norbornene sulfonamides can also form ROMP polymers using known metathesis catalysts. Preferably the ROMP polymers may be hydrogenated to give more stable polymers.
Type:
Grant
Filed:
February 3, 2000
Date of Patent:
May 22, 2001
Assignee:
The B. F. Goodrich Company
Inventors:
Saikumar Jayaraman, Richard Vicari, Larry F. Rhodes
Abstract: The present invention relates to a radiation sensitive photoresist composition comprising a photoacid initiator and a polycyclic polymer comprising repeating units that contain pendant acid labile groups. Upon exposure to an imaging radiation source the photoacid initiator generates an acid which cleaves the pendant acid labile groups effecting a polarity change in the polymer. The polymer is rendered soluble in an aqueous base in the areas exposed to the imaging source.
Type:
Grant
Filed:
September 12, 1997
Date of Patent:
May 15, 2001
Assignee:
The B. F. Goodrich Company
Inventors:
Larry F Rhodes, Andrew Bell, Saikumar Jayaraman, John-Henry Lipian, Brian L. Goodall, Robert A. Shick
Abstract: A method of manufacturing an alkylated diphenylamine composition to generate an alkylated diphenylamine composition with relatively low amounts of unsubstituted diphenylamine, based on the total weight of substituted and unsubstituted diphenylamine in the alkylated diphenylamine composition. The method includes reaction of unsubstituted diphenylamine with at least two olefins. In at least some instances, the alkylated diphenylamine composition may be used, for example, as an antioxidant in a lubricating fluid or polymer composition.