Patents Represented by Attorney Roger K. Graham
  • Patent number: 5816128
    Abstract: A device for severing flexible polymeric tube, pipe, or tubular extrudate, such as flexible light pipe, reproducibly, cleanly, and safely is described. The device comprises a block with two specially aligned cylindrical devices for holding the pipe and a slot between the devices for guiding the severing blade with minimum deviation from its path, and a pivot and mounting upon which a blade in a holder is mounted to give even more accurate and uniform control of the path of the severing action.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: October 6, 1998
    Assignee: Rohm and Haas Company
    Inventors: Andrew Bruce Walter Bigley, Jr., Edward G. Ludwig, Jr., Ramon Calisto Perez, Niels Haun
  • Patent number: 5696066
    Abstract: A lubricating oil composition includes from 0.01 weight per cent to 2 weight per cent of a polymer that includes repeating units derived from a (C.sub.8 -C.sub.15)alkyl (meth)acrylate monomer and 98 weight per cent to 99.99 weight per cent of a vegetable oil or a polyol ester.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: December 9, 1997
    Assignee: Rohm and Haas Company
    Inventors: Bernard George Kinker, Bridget Marie Stevens, Jerry William Washel
  • Patent number: 5654365
    Abstract: Syndiotactic polystyrene can be impact-modified by a blend of (a) polystyrene-hydrogenated polybutadiene block copolymers and (b) one or more core/shell modifiers based on a lightly or non-crosslinked rubber core, and with at least one shell or intermediate shell stage which is predominantly polystyrene, to produce a material of higher impact strength than the better value of either additive singly at the same total impact modifier level.
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: August 5, 1997
    Assignee: Rohm and Haas Company
    Inventors: Stephen Havriliak, Jr., Nazir Ahmed Memon, Choung-Houng Lai
  • Patent number: 5652306
    Abstract: An improved toughened blend of an aromatic polyester with from 5 to 20 phr of an impact modifier, which impact modifier is a blend of (a) 80 to 85 weight percent of a core/shell impact modifier having a polybutadiene core and at least one shell formed from methyl methacrylate and styrene; and (b) 15 to 20 weight percent of a linear copolymer which contains from 50 to 85 parts of units derived from ethylene, from 5 to 40 parts of units derived from (meth)acrylic esters, and from 2 to 10 parts of a copolymerizable monomer containing an epoxy group. The toughened blend exhibits higher impact strength than would be calculated for the blend using a linear relationship based on values of notched Izod for two blends, each containing only one of the impact modifiers at an equal use level.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: July 29, 1997
    Assignee: Rohm and Haas Company
    Inventors: Jean-Philippe Gaetan Meyer, Didier Michel Leblanc, Yannick Jean Yvon Chiquet
  • Patent number: 5652305
    Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: July 29, 1997
    Assignee: Rohm and Haas Company
    Inventors: Robert Mark Amici, Edward Ewart LaFleur, William James Work
  • Patent number: 5625001
    Abstract: Acrylic impact modifiers for polar thermoplastics such as poly(methyl methacrylate), polyamides, and poly(vinyl chloride) are prepared from emulsion polymer particles with hard methacrylate-rich domains in a continuous polyacrylate network.
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: April 29, 1997
    Assignee: Rohm and Haas Company
    Inventors: Samuel J. Makower, Richard M. Kopchik, Wen-Long Liu, Alan D. Stein
  • Patent number: 5616638
    Abstract: Flexible composites, such as those useful as light pipes, may be effectively cured by reactions upon copolymerized alkoxysilane functionality. Improvements in the optical properties of the uncured and cured systems are found when the alkoxysilane monomer is stabilized during preparation, storage, and copolymerization with low levels of non-aromatic stable free radicals or stable free-radical precursors, such as nitroxides.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: April 1, 1997
    Assignee: Rohm and Haas Company
    Inventors: Michael Hallden-Abberton, Donald McLeod, Jr., James S. Ritscher, Scot M. Turner
  • Patent number: 5612413
    Abstract: Poly(vinyl chloride), when impact modified with a core/shell impact modifier whose shell is predominantly formed from a C.sub.1 to C.sub.4 alkyl methacrylate and whose core is a copolymer of butyl acrylate and a specific compositional range of certain higher alkyl acrylate monomers, exhibits improved toughness, especially at lower use levels of the modifier or lower test temperatures for the blend, than when the core of the impact modifier is either substantially formed from butyl acrylate alone or substantially formed from the higher alkyl acrylate alone.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: March 18, 1997
    Assignee: Rohm and Haas Company
    Inventors: Kenneth P. Rozkuszka, Jane E. Weier
  • Patent number: 5605960
    Abstract: Polymers containing a high percentage of vinyl alcohol units are difficult to process into sheet, film, injection-molded objects, or fibers. Such melt-processing is greatly enhanced by admixing certain core/shell copolymers having either a rubbery, crosslinked core mainly formed from polymerization of butadiene and/or of an alkyl acrylate, or a non-cross-linked core derived mainly of units derived from an alkyl acrylate, and an outer shell mainly formed from polymerization of methyl methacrylate. Such copolymers do not require the presence of functional groups capable of reaction with the hydroxyl groups of the poly(vinyl alcohol) to impart the improved processing.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: February 25, 1997
    Assignee: Rohm and Haas Company
    Inventors: Jean M. Brady, Thierry C. C. Diaz
  • Patent number: 5599854
    Abstract: An improved process for preparing core/shell MBS modifiers is disclosed, wherein by adding feeds of the monomers which form the second and/or third stage polymers prior to completion of polymerization of the earlier stages, a process with substantially reduced polymerization time results with no loss in properties of the product. The process further includes agglomeration of the rubbery polymer to increase particle size during the polymerization process.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: February 4, 1997
    Assignee: Rohm and Haas Company
    Inventors: Edward J. Troy, Anibal Rosado
  • Patent number: 5599860
    Abstract: The invention relates to improved polyacetal compositions composed of polyoxymethylene (component A) and a stabilized MBS core shell graft copolymer (component B) formed from a rubber-elastic core based on polybutadiene, and a hard graft shell.The stabilized MBS core shell graft copolymer (component B) contains a special stabilization formulation of at least one hindered phenol, a phosphite, a sulfide, and a pH buffer system.The shaped articles produced from these mixtures are particularly distinguished by an excellent low-temperature impact strength and a good heat aging performance.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 4, 1997
    Inventors: Nazir A. Memon, Richard H. Weese, Ursula E. Ziegler
  • Patent number: 5569710
    Abstract: Polymer blends of at least one polar polymer are prepared by admixture with a poly(vinyl alcohol) and a (meth)acrylate copolymer also containing vinyl amide and/or unsaturated acid units. The ternary compositions have attractive processing and performance properties.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: October 29, 1996
    Assignee: Rohm and Haas Company
    Inventors: Edward E. LaFleur, William J. Work, Robert M. Amici, Newman M. Bortnick, Norman L. Holy
  • Patent number: 5567768
    Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: October 22, 1996
    Assignee: Rohm and Haas Company
    Inventors: Robert M. Amici, Edward E. LaFleur, William J. Work
  • Patent number: 5545826
    Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: August 13, 1996
    Assignee: Rohm and Haas Company
    Inventors: Robert M. Amici, Edward E. LaFleur, William J. Work
  • Patent number: 5545689
    Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: August 13, 1996
    Assignee: Rohm and Haas Company
    Inventors: Robert M. Amici, Edward E. LaFleur, William J. Work
  • Patent number: 5534594
    Abstract: An improved process for preparing core/shell MBS modifiers is disclosed, wherein by adding feeds of the monomers which form the second and/or third stage polymers prior to completion of polymerization of the earlier stages, a process with substantially reduced polymerization time results with no loss in properties of the product. The process further includes agglomeration of the rubbery polymer to increase particle size during the polymerization process.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: July 9, 1996
    Assignee: Rohm and Haas Company
    Inventors: Edward J. Troy, Anibal Rosado
  • Patent number: 5516840
    Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: May 14, 1996
    Assignee: Rohm and Haas Company
    Inventors: Robert M. Amici, Edward E. LaFleur, William J. Work
  • Patent number: 5508322
    Abstract: Blends of starch with acrylic polymers containing at least one of copolymerized acid or amide groups may be melt-processed into useful thermoplastic articles.
    Type: Grant
    Filed: January 5, 1995
    Date of Patent: April 16, 1996
    Inventors: Newman M. Bortnick, Roger K. Graham, Edward E. LaFleur, William J. Work, Jiun-Chen Wu
  • Patent number: 5506307
    Abstract: Polymer melt blends of a homopolymer of propylene or a copolymer of propylene with up to 40 weight percent of another monoolefin, with a homopolymer of one or more of a C.sub.10 to C.sub.30 alkyl (meth)acrylate or a copolymer containing at least 70 weight percent of the one or more C.sub.10 to C.sub.30 ester of an alkyl (meth)acrylate with up to 30 weight percent of one or more of a C.sub.1 to C.sub.9 alkyl (meth)acrylate, the homopolymer or copolymer having a weight-average molecular weight of at least 670,000, exhibit a relative characteristic time, as herein described, at least five (5) times that for the unmodified homo- or copolymer of polypropylene, and a melt strength ratio (as judged by relative sag resistance) at least 5 times that of the unmodified homo- or copolymer of polypropylene. Such blends are useful in thermoforming operations wherein sheet is thermoformed into cartons, containers, appliance housings, and the like.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: April 9, 1996
    Assignee: Rohm and Haas Company
    Inventor: Nazir A. Memon
  • Patent number: 5504153
    Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: April 2, 1996
    Assignee: Rohm and Haas Company
    Inventors: Robert M. Amici, Edward E. LaFleur, William J. Work