Patents by Inventor Craig E. Hamer
Craig E. Hamer 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: 11492491Abstract: Blend compositions include at least one polydiorganosiloxane polyoxamide copolymer, and at least 70% by weight of at least one silicone tackifying resin. The blend composition is non-tacky at room temperature up to a temperature of at least 100° C. The polydiorganosiloxane polyoxamide copolymer can be a linear or branched copolymer. The blend compositions provide solid, non-powdery, and non-tacky delivery vehicles for silicone tackifying resin.Type: GrantFiled: August 13, 2018Date of Patent: November 8, 2022Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Audrey A. Sherman, Kiu-Yuen Tse, Jay M. Jennen, Craig E. Hamer
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Publication number: 20210147733Abstract: Blend compositions include at least one polydiorganosiloxane polyoxamide copolymer, and at least 70% by weight of at least one silicone tackifying resin. The blend composition is non-tacky at room temperature up to a temperature of at least 100° C. The polydiorganosiloxane polyoxamide copolymer can be a linear or branched copolymer. The blend compositions provide solid, non-powdery, and non-tacky delivery vehicles for silicone tackifying resin.Type: ApplicationFiled: August 13, 2018Publication date: May 20, 2021Inventors: Audrey A. Sherman, Kiu-Yuen Tse, Jay M. Jennen, Craig E. Hamer
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Patent number: 10954418Abstract: Optically clear adhesive compositions contain an elastomeric polymer and a low molecular weight polymeric additive. The elastomeric polymer and the low molecular weight polymeric additive form an acid-base interaction. The refractive index of the adhesive composition is higher than the refractive index of the elastomeric polymer. The adhesive composition may also contain additional domains of liquids, polymers, additives or particles that have a higher refractive index than the elastomeric polymer.Type: GrantFiled: November 25, 2014Date of Patent: March 23, 2021Assignee: 3M Innovation Properties CompanyInventors: Audrey A. Sherman, Margot A. Branigan, Craig E. Hamer, Ross E. Behling, Thomas E. Augustine, Karl E. Benson
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Patent number: 10005925Abstract: Articles with thin caliper melt coatings of high molecular weight, high viscosity materials and methods of making such coatings.Type: GrantFiled: October 19, 2012Date of Patent: June 26, 2018Assignee: 3M Innovative Properties CompanyInventors: Patrick D. Hyde, Jeffrey M. Imsande, Jayshree Seth, Craig E. Hamer, Rebecca A. Shipman, Robert B. Secor, Michael C. Martin, Pentti K. Loukusa
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Patent number: 9708514Abstract: Methods of (co)polymerizing ethylenically-unsaturated materials, including the steps of providing a non-deaerated mixture of free radically (co)polymerizable ethylenically-unsaturated material in a batch reactor, exposing the non-deaerated mixture to a source of ionizing radiation for a time sufficient to initiate (co)polymerization of at least a portion of the free radically (co)polymerizable ethylenically-unsaturated material, and allowing the free radically (co)polymerizable ethylenically-unsaturated material to (co)polymerize under essentially adiabatic conditions while continuing to expose the mixture to the source of ionizing radiation for a time sufficient to yield an at least partially (co)polymerized (co)polymer. The ethylenically-unsaturated materials are selected from vinyl-functional monomers, vinyl-functional oligomers, vinyl-functional macromers, and combinations thereof. The mixture is preferably free of thermally-induced or UV-induced free radical polymerization initiators.Type: GrantFiled: December 6, 2013Date of Patent: July 18, 2017Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Sasha B. Myers, Daniel J. O'Neal, Karl B. Richter, Thu-Van T. Tran, Craig E. Hamer
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Patent number: 9695343Abstract: The methods of preparing hot melt processable pressure sensitive adhesives include combining an elastomeric (meth)acrylate random copolymer and a discontinuous fibrous material in a hot melt mixing apparatus, and mixing to form a hot melt processable pressure sensitive adhesive. The elastomeric (meth)acrylate random copolymer may be contained within a thermoplastic pouch, and the hot melt mixture may include a relatively high level of tackifying resin. The elastomeric (meth)acrylate random copolymer may contain branching agents and photosensitive crosslinking agents. The hot melt processable pressure sensitive adhesives can be used to prepare transfer tapes.Type: GrantFiled: September 23, 2011Date of Patent: July 4, 2017Assignee: 3M Innovative Properties CompanyInventors: Andrew Satrijo, Megan P. Lehmann, Nathan B. Fong, Craig E. Hamer, John R. Jacobsen, Mark F. Ellis
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Patent number: 9580631Abstract: Methods of forming an adhesive composition including the steps of (a) combining a non-deaerated mixture comprising at least one free radically (co)polymerizable ethylenically-unsaturated material with a sealable packaging, wherein the packaging contains the non-deaerated mixture; (b) sealing the non-deaerated mixture in the packaging to form a sealed packaging; and (c) exposing the non-deaerated mixture in the sealed packaging to a source of ionizing radiation for a time sufficient to initiate (co)polymerization of at least a portion of the at least one free radically (co)polymerizable ethylenically-unsaturated material to form an adhesive composition in the sealed packaging. The (co)polymerization takes place essentially non-adiabatically.Type: GrantFiled: December 6, 2013Date of Patent: February 28, 2017Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Daniel J. O'Neal, Sasha B. Myers, Karl Richter, Thu-Van T. Tran, Craig E. Hamer
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Publication number: 20160298005Abstract: Optically clear adhesive compositions contain an elastomeric polymer and a low molecular weight polymeric additive. The elastomeric polymer and the low molecular weight polymeric additive form an acid-base interaction. The refractive index of the adhesive composition is higher than the refractive index of the elastomeric polymer. The adhesive composition may also contain additional domains of liquids, polymers, additives or particles that have a higher refractive index than the elastomeric polymer.Type: ApplicationFiled: November 25, 2014Publication date: October 13, 2016Inventors: Audrey A. Sherman, Margot A. Branigan, Craig E. Hamer, Ross E. Behling, Thomas E. Augustine, Karl E. Benson
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Publication number: 20150322304Abstract: Methods of forming an adhesive composition including the steps of (a) combining a non-deaerated mixture comprising at least one free radically (co)polymerizable ethylenically-unsaturated material with a sealable packaging, wherein the packaging contains the non-deaerated mixture; (b) sealing the non-deaerated mixture in the packaging to form a sealed packaging; and (c) exposing the non-deaerated mixture in the sealed packaging to a source of ionizing radiation for a time sufficient to initiate (co)polymerization of at least a portion of the at least one free radically (co)polymerizable ethylenically-unsaturated material to form an adhesive composition in the sealed packaging. The (co)polymerization takes place essentially non-adiabatically.Type: ApplicationFiled: December 6, 2013Publication date: November 12, 2015Inventors: Daniel J. O'Neal, Sasha B. Myers, Karl Richter, Thu-Van T. Tran, Craig E. Hamer
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Publication number: 20150298366Abstract: Methods of (co)polymerizing ethylenically-unsaturated materials, including the steps of providing a mixture of free radically (co)polymerizable ethylenically-unsaturated material in a mold, exposing the mixture in the mold to a source of ionizing radiation for a time sufficient to initiate (co)polymerization of at least a portion of the free radically (co)polymerizable ethylenically-unsaturated material, and allowing the free radically (co)polymerizable ethylenically-unsaturated material to (co)polymerize in the mold while continuing to expose the mixture to the source of ionizing radiation for a time sufficient to yield an at least partially (co)polymerized (co)polymer. The ethylenically-unsaturated materials are selected from vinyl-functional monomers, vinyl-functional oligomers, vinyl-functional macromers, and combinations thereof. The mixture is preferably free of thermally-induced or UV-induced free radical polymerization initiators.Type: ApplicationFiled: December 6, 2013Publication date: October 22, 2015Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Karl B. Richter, Sasha B. Myers, Daniel J. O'Neal, Thu-Van T. Tran, Craig E. Hamer
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Publication number: 20150299532Abstract: Methods of (co)polymerizing ethylenically-unsaturated materials, including the steps of providing a non-deaerated mixture of free radically (co)polymerizable ethylenically-unsaturated material in a batch reactor, exposing the non-deaerated mixture to a source of ionizing radiation for a time sufficient to initiate (co)polymerization of at least a portion of the free radically (co)polymerizable ethylenically-unsaturated material, and allowing the free radically (co)polymerizable ethylenically-unsaturated material to (co)polymerize under essentially adiabatic conditions while continuing to expose the mixture to the source of ionizing radiation for a time sufficient to yield an at least partially (co)polymerized (co)polymer. The ethylenically-unsaturated materials are selected from vinyl-functional monomers, vinyl-functional oligomers, vinyl-functional macromers, and combinations thereof. The mixture is preferably free of thermally-induced or UV-induced free radical polymerization initiators.Type: ApplicationFiled: December 6, 2013Publication date: October 22, 2015Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Sasha B. Myers, Daniel J. O'Neal, Karl B. Richter, Thu-Van T. Tran, Craig E. Hamer
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Patent number: 8975342Abstract: Compositions are described that are blends of a grafted copolymer and a polyamide. Methods of making the blended compositions are also described. The grafted copolymers are the reaction product of (1) a first compound having both an aziridinyl group and a polymeric group with (2) a second polymeric material having an acidic group. Blending the grafted copolymer with the polyamide can be used, for example, to increase the cohesive strength of the grafted copolymer.Type: GrantFiled: November 16, 2011Date of Patent: March 10, 2015Assignee: 3M Innovative Properties CompanyInventors: Jason D. Clapper, Kevin M. Lewandowski, Craig E. Hamer
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Patent number: 8969456Abstract: A method of making a pressure-sensitive hot melt adhesive. The method includes extruding a melt composition that includes a polymer, wherein the polymer has acidic groups covalently attached thereto, and a metal salt hydrate, wherein the metal salt hydrate has a melting point that is less than the maximum processing temperature.Type: GrantFiled: June 9, 2010Date of Patent: March 3, 2015Assignee: 3M Innovative Properties CompanyInventors: Andrew Satrijo, Megan P. Lehmann, Michael D. Crandall, Craig E. Hamer, Robert D. Waid
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Publication number: 20140234584Abstract: Articles with thin caliper melt coatings of high molecular weight, high viscosity materials and methods of making such coatings.Type: ApplicationFiled: October 19, 2012Publication date: August 21, 2014Inventors: Patrick D. Hyde, Jeffrey M. Imsande, Jayshree Seth, Craig E. Hamer, Rebecca A. Shipman, Robert B. Secor, Michael C. Martin, Pentti K. Loukusa
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Patent number: 8796390Abstract: Grafted compounds are formed by reacting (1) a first compound having both an aziridinyl group and a polymeric group with (2) a second compound having at least one acidic group. This reaction results in the opening of the aziridinyl ring on the first compound by the acidic group on the second compound and the formation of an attachment group that connects polymeric group of the first compound to the second compound. In some embodiments, the second compound is a polymeric material having multiple acidic groups and the product of the reaction of the first compound with the second compound results in the formation of a grafted copolymer.Type: GrantFiled: May 19, 2011Date of Patent: August 5, 2014Assignee: 3M Innovative Properties CompanyInventors: Jason D. Clapper, Kevin M. Lewandowski, Mark F. Ellis, Craig E. Hamer
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Patent number: 8791207Abstract: The present application is directed to a non-aqueous composition. The composition comprises a blend of an acidic copolymer derived from a first group of monomers comprising at least one acidic monomer, and a basic copolymer derived from a second group of monomers comprising at least one basic monomer. The basic copolymer may comprise an amide functionality. In some embodiments, the composition comprises an acidic (meth)acrylic copolymer having a Tg less than 0° C., which is derived from a first group of monomers comprising at least one acidic monomer, and a basic (meth)acrylic copolymer having a Tg less than 0° C., which is derived from a second group of monomers comprising at least one basic monomer. Additionally, the composition may comprise a minimum of 0.10 moles of acid/base pairs per kilogram of composition.Type: GrantFiled: January 15, 2010Date of Patent: July 29, 2014Assignee: 3M Innovative Properties CompanyInventors: Ronald S. Steelman, Michael P. Daniels, David J. Yarusso, Craig E. Hamer
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Patent number: 8653216Abstract: Branched polydiorganosiloxane polyamide, block copolymers and methods of making the copolymers are provided. The method of making the copolymers involves reacting one or more amine compounds including at least one polyamine with a precursor having at least one polydiorganosiloxane segment and at least two ester groups.Type: GrantFiled: April 5, 2013Date of Patent: February 18, 2014Assignee: 3M Innovative Properties CompanyInventors: Audrey A. Sherman, David B. Olson, Stephen A. Johnson, Craig E. Hamer, David S. Hays, Richard G. Hansen
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Publication number: 20130253122Abstract: Compositions are described that are blends of a grafted copolymer and a polyamide. Methods of making the blended compositions are also described. The grafted copolymers are the reaction product of (1) a first compound having both an aziridinyl group and a polymeric group with (2) a second polymeric material having an acidic group. Blending the grafted copolymer with the polyamide can be used, for example, to increase the cohesive strength of the grafted copolymer.Type: ApplicationFiled: November 16, 2011Publication date: September 26, 2013Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Jason D. Clapper, Kevin M. Lewandowski, Craig E. Hamer
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Patent number: 8536241Abstract: This disclosure provides (meth)acryloyl pressure-sensitive adhesive foams and foam articles having one or more of the following properties: small cells, uniform cell sizes, pressure sensitive adhesive compositions, compliance to irregular substrates and vibration damping, and shock absorbing properties.Type: GrantFiled: June 22, 2011Date of Patent: September 17, 2013Assignee: 3M Innovative Properties CompanyInventors: Craig E. Hamer, Ilyess H. Romdhane, Andrew Satrijo, Thomas E. Augustine, Neil J. Fischer, Michael C. Martin, Robert B. Secor, Robert D. Waid, Sharon Wang
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Publication number: 20130184393Abstract: The methods of preparing hot melt processable pressure sensitive adhesives include combining an elastomeric (meth)acrylate random copolymer and a discontinuous fibrous material in a hot melt mixing apparatus, and mixing to form a hot melt processable pressure sensitive adhesive. The elastomeric (meth)acrylate random copolymer may be contained within a thermoplastic pouch, and the hot melt mixture may include a relatively high level of tackifying resin. The elastomeric (meth)acrylate random copolymer may contain branching agents and photosensitive crosslinking agents. The hot melt processable pressure sensitive adhesives can be used to prepare transfer tapes.Type: ApplicationFiled: September 23, 2011Publication date: July 18, 2013Applicant: 3Innovative Properties CompanyInventors: Andrew Satrijo, Megan P. Lehmann, Nathan B. Fong, Craig E. Hamer, John R. Jacobsen, Mark F. Ellis