Patents Represented by Attorney J. V. Lilly

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  • Block copolymer having mixed molecular weight endblocks
    Patent number: 5296547
    Abstract: The present invention is directed to a novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive and tape made therefrom. The novel block copolymer comprises from about 4 to about 40 percent by weight of a polymerized monovinyl aromatic compound and from about 96 to about 60 percent by weight of a conjugated diene. The block copolymer has the general formula Q.sub.n Y where Q represents an individual arm of the block copolymer and has the formula S-B; n represents the number of arms and is at least 3; and Y is the residue of a multifunctional coupling agent. Furthermore, S is a nonelastomeric polymer segment endblock of a polymerized monovinyl aromatic homopolymer, there being at least two different molecular weight endblocks in the block copolymer. The number average molecular weight of the higher molecular weight endblock (Mn).sub.H is in the range of from about 5,000 to about 50,000, and the number average molecular weight of the lower molecular weight endblock (Mn).sub.
    Type: Grant
    Filed: January 28, 1993
    Date of Patent: March 22, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark K. Nestegard, Jingjing Ma
  • Drag reduction article
    Patent number: 4986496
    Abstract: A conformable drag reduction article is provided having a patterned surface capable of reducing drag resistance by fluid flowing thereover.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: January 22, 1991
    Assignee: Minnesota Mining and Manufacturing
    Inventors: Francis J. Marentic, Terry L. Morris
  • Encapsulant compositions for use in signal transmission devices
    Patent number: 4985475
    Abstract: The invention provides a grease compatible encapsulant composition capable of use with signal transmission devices, such as electrical or optical cable. The composition is the extended reaction product of an admixture of an anhydride functionalized compound, a crosslinking agent, and an oxirane containing material which provides improved hydrolytic stability to the encapsulant composition.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: January 15, 1991
    Assignee: Minnesota Mining and Manufacturing
    Inventors: Thomas S. Croft, Hartwick Haugen
  • Compositions and methods for inhibiting plaque formation
    Patent number: 4161518
    Abstract: A dentifrice composition is provided containing a quaternary ammonium organosiloxane having the formula ##STR1## wherein R.sup.1 is an alkoxy group having from 1 to 5 carbon atoms, R.sup.2 is an alkylene group having from 1 to 25 carbon atoms, and R.sup.3, R.sup.4 and R.sup.5 are, individually, alkyl groups of from 1 to 25 carbon atoms, and X is an anion, preferably selected from chlorine, bromine fluorine and iodine. A method of inhibiting plaque formation on teeth in an oral environment is also provided.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: July 17, 1979
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard Y. Wen, Linda L. LaFleur, Michael R. Engel, Anthony J. Lucas