Patents by Inventor Janis Robins
Janis Robins has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6800157Abstract: A method of assembling a structure comprises applying an epoxy composition to at least one of a first member and a second member, sandwiching the epoxy composition between the first and second members, and bonding the two members wherein the adhesive bond is a thermally cured mass. The epoxy composition contains an epoxy resin, a phenolic or amine compound as a chain extender, a basic catalyst and a polymeric toughener. The composition can be formulated in two parts wherein part A contains the catalyst and part B has the epoxy resin.Type: GrantFiled: September 16, 2002Date of Patent: October 5, 2004Assignee: 3M Innovative Properties CompanyInventors: Kent S. Tarbutton, Janis Robins
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Publication number: 20030144416Abstract: An epoxy composition effective for forming a thermally curable structural adhesive, and in particular, a two part epoxy resin composition that when cured can obtain preferred and improved physical and chemical characteristics useful in structural assembly applications.Type: ApplicationFiled: September 16, 2002Publication date: July 31, 2003Applicant: 3M Innovative Properties CompanyInventors: Kent S. Tarbutton, Janis Robins
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Patent number: 6486256Abstract: A two-part composition useful as an adhesive comprises an epoxy resin, a chain extender selected from an amine or a phenolic compound, a base catalyst and a polymeric toughener wherein Part A contains the catalyst and Part B with the epoxy resin.Type: GrantFiled: October 13, 1998Date of Patent: November 26, 2002Assignee: 3M Innovative Properties CompanyInventors: Kent S. Tarbutton, Janis Robins
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Patent number: 5629380Abstract: A curable, structural epoxy adhesive composition comprising two parts is provided. The first part comprises an amine curing agent and a catalyst; the second part comprises an epoxy resin having an average epoxide functionality of greater than one.Type: GrantFiled: September 19, 1995Date of Patent: May 13, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: John M. Baldwin, Janis Robins
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Patent number: 5399637Abstract: Polymerizable compositions having at least one cationically polymerizable monomer; an optional free radically polymerizable monomer; an energy-polymerizable catalyst system wherein the catalyst system comprises an organometallic complex salt; a thermally decomposable ester reaction product of a tertiary alkyl alcohol and an acid that forms a chelation complex with the metal ion of the organometallic complex salt; optionally, a peroxide. The polymerized compositions are useful as cured adhesive films, pressure sensitive adhesives, protective coatings, liquid adhesives, structural and semi-structural adhesives, and free standing films.Type: GrantFiled: July 29, 1993Date of Patent: March 21, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Peggy S. Willett, Janis Robins, Kent S. Tarbutton, Michael A. Kropp
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Patent number: 5310840Abstract: Polymerizable compositions having at least one cationically polymerizable monomer; an optional free radically polymerizable monomer; an energy-polymerizable catalyst system wherein the catalyst system comprises an organometallic complex salt; a thermally decomposable ester reaction product of a tertiary alkyl alcohol and an acid that forms a chelation complex with the metal ion of the organometallic complex salt; optionally, a peroxide. The polymerized compositions are useful as cured adhesive films, pressure sensitive adhesives, protective coatings, liquid adhesives, structural and semi-structural adhesives, and free standing films.Type: GrantFiled: July 29, 1993Date of Patent: May 10, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Peggy S. Willett, Janis Robins, Kent S. Tarbutton, Michael A. Kropp
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Patent number: 5280067Abstract: A two-part, thermally curable epoxy composition comprising an epoxy resin; a curing agent prepared from a substituted pentafluoroantimonic acid and a substituted benzene having an amino substituent and an electron-withdrawing substituent on the benzene ring; a polyol; and a toughening agent. The compositions exhibit desirable green strength and pot life.Type: GrantFiled: August 18, 1992Date of Patent: January 18, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Kent S. Tarbutton, Janis Robins, Virginia C. Markevka
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Patent number: 5252694Abstract: Polymerizable compositions having at least one cationically polymerizable monomer; an optional free radically polymerizable monomer; an energy-polymerizable catalyst system wherein the catalyst system comprises an organometallic complex salt; a thermally decomposable ester reaction product of a tertiary alkyl alcohol and an acid that forms a chelation complex with the metal ion of the organometallic complex salt; optionally, a peroxide. The polymerized compositions are useful as cured adhesive films, pressure sensitive adhesives, protective coatings, liquid adhesives, structural and semi-structural adhesives, and free standing films.Type: GrantFiled: January 22, 1992Date of Patent: October 12, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Peggy S. Willett, Janis Robins, Kent S. Tarbutton, Michael A. Kropp
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Patent number: 4948449Abstract: Storage-stable, thermally-curable, one-part epoxy resin compositions comprising a curable epoxide resin; a curative amount of an aliphatic or non-aromatic cyclic polyol having about 2 to 18 carbon atoms, at least two hydroxy groups of said polyol being primary or secondary, and said polyol being free of strong acid groups, and free of electron-withdrawing substituents and large groups which cause steric hindrance in the .alpha.-position in relation to the carbon atoms attached to the methylol groups of the polyol; and a catalytic amount of an imidazole compound.Type: GrantFiled: February 21, 1989Date of Patent: August 14, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Kent S. Tarbutton, Janis Robins, John C. Tangen
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Patent number: 4846905Abstract: Disclosed is a thermally-curable, one-part epoxy adhesive composition comprising: (1) a glycidyl ether epoxide having a048477475 n epoxy functionality grater than one and a molecular weight between about 150 and 10,000; (2) a catalyst comprising (i) an acid of the formula H.sup.+ SbF.sub.5 X.sup.- wherein X is halogen, hydroxy, or --OR where --OR is the residue of an aliphatic or aromatic alcohol having a molecular weight less than about 10,000 and (ii) N,N-diethyl-o-toluidine; (3) an aliphatic or non-aromatic cyclic polyol having about 2 to 18 carbon atoms, at least two hydroxy groups of which are primary or secondary, and being free of electron-withdrawing substituents, amine substituents, or large substituents that cause steric hindrance in the .alpha.-position in relation to the carbon attached to the methylol group of the polyol; and (4) a toughening agent that does not react with the epoxide during curing and has an epoxide compatible component and an epoxide incompatible component.Type: GrantFiled: April 6, 1988Date of Patent: July 11, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: Kent S. Tarbutton, Janis Robins
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Patent number: 4810323Abstract: Storage-stable, thermally-curable, one-part epoxy resin compositions comprising a curable epoxide resin; a curative amount of an aliphatic or non-aromatic cyclic polyol having about 2 to 18 carbon atoms, at least two hydroxy groups of said polyol being primary or secondary, and said polyol being free of strong acid groups, and free of electron-withdrawing substituents and large groups which cause steric hindrance in the .alpha.-position in relation to the carbon atoms attached to the methylol groups of the polyol; and a catalytic amount of an imidazole compound.Type: GrantFiled: June 10, 1988Date of Patent: March 7, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: Kent S. Tarbutton, Janis Robins, John C. Tangen
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Patent number: 4772645Abstract: Storage-stable, thermally-curable, one-part epoxy resin compositions comprising a curable opoxide resin; a curative amount of an aliphatic or non-aromatic cyclic polyol having about 2 to 18 carbon atoms, at least two hydroxy groups of said polyol being primary or secondary, and said polyol being free of strong acid groups, and free of electron-withdrawing substituents and large groups which cause steric hindrance in the .alpha.-position in relation to the carbon atoms attached to the methylol groups of the polyol; and a catalytic amount of an imidazole compound.Type: GrantFiled: December 11, 1987Date of Patent: September 20, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventors: Kent S. Tarbutton, Janis Robins, John C. Tangen
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Patent number: 4704331Abstract: A method for adhering surfaces together using fast curing epoxy resin compositions is provided. The method includes the steps of mixing together (a) a curable glycidyl ether epoxide group-containing compound, (b) an amino-terminated aliphatic polyether curing agent, (c) a polymeric toughening agent having both a rubbery phase and a thermoplastic phase or being capable of forming, with the epoxide group-containing material, both a rubbery phase and a thermoset phase on curing, and (d) a metal salt catalyst capble of providing an exotherm of at least 20.degree. C.; applying the resulting mixture to a portion of at least one surface; contacting the surface having the mixture applied thereto to a second surface in bonding relationship with the mixture disposed between the surfaces; and curing the mixture.Type: GrantFiled: February 9, 1987Date of Patent: November 3, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventors: Janis Robins, Charles D. Wright
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Patent number: 4668736Abstract: An epoxy resin composition is provided. This composition contains (a) a curable glycidyl ether epoxide group-containing material, (b) an amino- terminated aliphatic polyether curing agent, (c) a polymeric toughening agent having both a rubbery phase and a thermoplastic phase or being capable of forming, with the epoxide group-containing material, both a rubbery phase and a thermoset phase on curing, and (d) a metal salt catalyst capable of providing an exotherm of at least 20.degree. C.Type: GrantFiled: March 21, 1986Date of Patent: May 26, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventors: Janis Robins, Charles D. Wright
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Patent number: 4553982Abstract: The use of an aromatic amine salt of a substituted pentafluoroantimonic acid as a curing agent for epoxy resins, and the use of the epoxy resin compositions as binders for abrasives in abrasive sheet products, are disclosed. The aromatic amines are selected from aniline and hindered aromatic amines.Type: GrantFiled: March 5, 1985Date of Patent: November 19, 1985Assignee: Minnesota Mining and Manufacturing Co.Inventors: Gerald E. Korbel, Janis Robins, Harold E. Rude
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Patent number: 4503211Abstract: An epoxy resin latently curable composition including a novel curing agent comprising the liquid salt of a substituted pentafluoroantimonic acid and an aromatic amine selected from the group consisting of aniline and a hindered amine has a desirably long pot life yet cures rapidly with heating to a cured composition.Type: GrantFiled: May 31, 1984Date of Patent: March 5, 1985Assignee: Minnesota Mining and Manufacturing Co.Inventor: Janis Robins
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Patent number: 4460759Abstract: An adhesive composition comprising an adhesive base and accelerator portion, the adhesive base comprising (a) a polymerizable monomer selected from the group consisting of unsubstituted alpha-cyanoacrylates and substituted alpha-cyanoacrylates; and (b) an effective amount of stabilizer; and the accelerator portion comprising a weakly acidic or weakly basic ionic accelerator compound comprising a cation M and an anion A, the pKa relating to cation M in the equilibrium defined byM(H.sub.2 O)+.revreaction.MOH+H.sup.+being at least about 10, the pKa relating to anion A in the equilibrium defined byHA.revreaction.A-+H.sup.Type: GrantFiled: November 20, 1981Date of Patent: July 17, 1984Assignee: Minnesota Mining & Manufacturing CompanyInventor: Janis Robins
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Patent number: 4168332Abstract: A non-glare, abrasion resistant coating can be produced by spraying a polymerizable composition onto a surface. The composition comprises an epoxy prepolymer of an epoxy-terminated silane and an oxirane comonomer in solution. The composition may be conveniently applied from an aerosol can.Type: GrantFiled: August 10, 1978Date of Patent: September 18, 1979Assignee: Minnesota Mining and Manufacturing CompanyInventors: Roger W. Leinen, Jerome A. Pieterick, Wayne A. Pletcher, Janis Robins
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Patent number: 4115295Abstract: Two-part polymerizable compositions are described which contain (a) organic material having epoxide functionality, (b) organic material having hydroxyl functionality, and (c) a catalyst comprising highly fluorinated aliphatic sulfonyl protonic acid or a compound capable of liberating such acid. The compositions polymerize essentially completely at room temperature (or at slightly elevated temperatures). The polymerized compositions have desirable dielectric properties and are therefore especially useful for potting electrical components.Type: GrantFiled: April 26, 1976Date of Patent: September 19, 1978Assignee: Minnesota Mining and Manufacturing CompanyInventors: Janis Robins, James E. Kropp, Chung I. Young
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Patent number: 4100134Abstract: Epoxy prepolymers having particular ranges of physical properties and derived from epoxy-terminated silanes and/or copolymers form high quality abrasion resistant coatings when subsequently hydrolyzed.Type: GrantFiled: March 28, 1977Date of Patent: July 11, 1978Assignee: Minnesota Mining and Manufacturing CompanyInventors: Janis Robins, J. Lamar Zollinger