Patents by Inventor Richard D. Rich
Richard D. Rich 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: 7323222Abstract: The present invention relates to anaerobically curable compositions, methods of preparation and methods of use that provide enhanced physical properties when cured in contact with untreated inactive surfaces. The compositions which include isobornyl acrylate, isobornyl methacrylate or combinations thereof in combination with a multi(meth)acrylate and a free-radical initiator, may be used without the addition of a transition metal catalyst.Type: GrantFiled: November 18, 2002Date of Patent: January 29, 2008Assignee: Henkel CorporationInventors: Dzu Dinh Luong, Frederick F. Newberth, III, Canh Minh Tran, Richard D. Rich
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Publication number: 20040112507Abstract: The present invention relates to anaerobically curable compositions, methods of preparation and methods of use that provide enhanced physical properties when cured in contact with untreated inactive surfaces. The compositions which include isobornyl acrylate, isobornyl methacrylate or combinations thereof in combination with a multi(meth)acrylate and a free-radical initiator, may be used without the addition of a transition metal catalyst.Type: ApplicationFiled: September 29, 2003Publication date: June 17, 2004Inventors: Dzu Dinh Luong, Frederick F. Newberth III, Canh Minh Tran, Richard D. Rich
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Patent number: 6673875Abstract: An anaerobic adhesive composition having enhanced toughness and resistance to crack propagation, particularly subsequent to thermal exposure, comprising a combination of three monomers consisting of (a) at least one (meth) acrylate monomer, (b) at least one (meth)acrylate-terminated urethane modified acrylonitrile/butadiene prepolymer, and (c) at least one (meth)acrylate-terminated acrylic/polyisocyanate adduct.Type: GrantFiled: July 3, 2002Date of Patent: January 6, 2004Assignee: Henkel Loctite CorporationInventors: Shabbir Attarwala, Richard D. Rich, Natalie R. Li
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Publication number: 20030036601Abstract: An anaerobic adhesive composition having enhanced toughness and resistance to crack propagation, particularly subsequent to thermal exposure, comprising a combination of three monomers consisting of (a) at least one (meth)acrylate monomer, (b) at least one (meth)acrylate-terminated urethane modified acrylonitrile/butadiene prepolymer, and (c) at least one (meth)acrylate-terminated acrylic/polyisocyanate adduct.Type: ApplicationFiled: July 3, 2002Publication date: February 20, 2003Inventors: Shabbir Attarwala, Richard D Rich, Natalie R Li
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Patent number: 6391993Abstract: The present invention provides anaerobic adhesive compositions, reaction products of which demonstrate controlled-strength at ambient temperature conditions and enhanced resistance to thermal degradation at elevated temperature conditions. The compositions are (meth)acrylate- and/or polyorganosiloxane-based and may include one or more of a variety of other components, such as certain coreactants, a maleimide component, a diluent component reactive at elevated temperature conditions, mono- or poly-hydroxyalkane components, and other components.Type: GrantFiled: February 1, 2000Date of Patent: May 21, 2002Assignee: Loctite CorporationInventors: Shabbir Attarwala, Gina M. Mazzella, Hsien-Kun Chu, Dzu D. Luong, Lester D. Bennington, Mark M. Konarski, Eerik Maandi, Richard D. Rich, Natalie R. Li, Frederick F. Newberth, III, Susan L. Levandoski
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Patent number: 5853520Abstract: A curable composition, having utility for threadlocking engageable members of a threaded mechanical fastener, comprising: a reactive silicone (meth)acrylate emulsified in an aqueous medium, optionally further comprising a polymerizable non-silicone (meth)acrylate monomer or oligomer; and a microencapsulated peroxy initiator which is initiatingly effective for cure of the reactive silicone (meth)acrylate.Type: GrantFiled: January 23, 1997Date of Patent: December 29, 1998Assignee: Loctite CorporationInventors: Richard D. Rich, Eerik Maandi, Paula M. Gontarz, Hsien-Kun Chu
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Patent number: 5811473Abstract: A primer activator composition useful in cleaning and activating metallic surfaces in preparation for use with an anaerobic adhesive. The composition contains a non-combustible, non-ozone depleting, liquid polyfluoroalkane having at least one carbon-hydrogen bond, preferably a C.sub.4-10 dihydro- or trihydro-polyfluoroalkane; an alkanol which is capable of forming an azeotropic mixture with the polyfluoroalkane, preferably a C.sub.1-6 alkanol, such as n-butanol; a transition metal compound, preferably a copper compound; and optionally, an amine co-activator.Type: GrantFiled: April 2, 1996Date of Patent: September 22, 1998Assignee: Loctite CorporationInventors: Jennifer M. Ramos, Richard D. Rich
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Patent number: 5635546Abstract: A curable composition, having utility for threadlocking engageable members of a threaded mechanical fastener, comprising: a reactive silicone (meth)acrylate emulsified in an aqueous medium, optionally further comprising a polymerizable non-silicone (meth)acrylate monomer or oligomer; and a microencapsulated peroxy initiator which is initiatingly effective for cure of the reactive silicone (meth)acrylate.Type: GrantFiled: February 22, 1996Date of Patent: June 3, 1997Assignee: Loctite CorporationInventors: Richard D. Rich, Eerik Maandi, Paula M. Gontarz, Hsien-Kun Chu
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Patent number: 5605999Abstract: An anaerobically curing composition is comprised of (i) a silicone fluid formed as the reaction product of at least one first silane of formula I:R.sub.n Si(X).sub.4-n (I),wherein the R groups are the same or different and selected from the group consisting of hydrogen, C1-C12 alkyl, C6-C12 aryl, C7-C18 arylalkyl, C7-C18 alkylaryl, haloalkyl, haloaryl and monovalent ethylenically unsaturated radicals excluding (meth)acryloxy functional groups, X is a hydrolyzable functionality, and n is an integer of from 0 to 3, and at least one second silane of formula II:R.sup.1.sub.m R.sup.2.sub.p Si(X).sub.4-(m+p) (II),wherein R.sup.1 is a (meth)acrylic functional group and R.sup.Type: GrantFiled: June 5, 1995Date of Patent: February 25, 1997Assignee: Loctite CorporationInventors: Hsien-Kun Chu, Richard D. Rich, I. David Crossan, Robert P. Cross
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Patent number: 5373075Abstract: An adhesive composition capable of post-cure expansion comprising a multifunctional (meth)acrylate and a maleimide capable of effectuating expansion upon post-cure. A homogeneous mixture of a monomer and maleimide are subjected to a first cure heat stage wherein a rigid partially-cured plastic is formed and a post-cure heart stage to effectuate permanent expansion of the cured adhesive composition.Type: GrantFiled: February 1, 1994Date of Patent: December 13, 1994Assignee: Loctite CorporationInventors: Eerik Maandi, Richard D. Rich
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Patent number: 5302679Abstract: An adhesive composition capable of post-cure expansion comprising a multifunctional methacrylate and a maleimide capable of effectuating expansion upon post-cure. A homogeneous mixture of a monomer and maleimide are subjected to a first cure heat stage wherein a rigid partially-cured plastic is formed and a post-cure heat stage to effectuate permanent expansion of the cured adhesive composition.Type: GrantFiled: August 6, 1992Date of Patent: April 12, 1994Assignee: Loctite CorporationInventors: Eerik Maandi, Richard D. Rich
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Patent number: 4321349Abstract: Curable acrylate ester compositions having as an accelerator for the polymerization a hydrazine derivative of the formula R.sup.1 --HN--NH--CO--R.sup.2. Typical of the monomers are the polyalkyleneglycol dimethacrylates and the so-called urethane acrylates. Polymerization is preferably initiated by a peroxy compound such as cumene hydroperoxide, such a composition having anaerobic curing characteristics.Type: GrantFiled: May 27, 1980Date of Patent: March 23, 1982Assignee: Loctite CorporationInventor: Richard D. Rich
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Patent number: 4287330Abstract: Curable acrylate ester compositions having as an accelerator for the polymerization a hydrazine derivative of the formula R.sup.1 --HN--NH--CO--R.sup.2. Typical of the monomers are the polyalkylene-glycol dimethacrylates and the so-called urethane acrylates. Polymerization is preferably initiated by a peroxy compound such as cumene hydroperoxide, such a composition having anaerobic curing characteristics.Type: GrantFiled: May 23, 1975Date of Patent: September 1, 1981Assignee: Loctite CorporationInventor: Richard D. Rich
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Patent number: 4180640Abstract: Curable acrylate ester compositions having as an accelerator for the polymerization a hydrazine derivative of the formula R.sup.1 --HN--NH--CO--R.sup.2 and as a co-accelerator, an acid having a pK.sub.a of less than about 6. The compositions may optionally be formulated as two-part compositions with the non-ester-containing part being applied as a primer. Typical of the monomers are the polyalkylene glycol dimethacrylates and the so-called urethane acrylates. Polymerization is preferably initiated by a peroxy compound such as cumene hydroperoxide, such a composition having anaerobic curing characteristics.Type: GrantFiled: October 31, 1977Date of Patent: December 25, 1979Assignee: Loctite CorporationInventors: David P. Melody, Daniel A. Doherty, John F. O'Grady, Richard D. Rich