Abstract: The present invention provides a cationically photocurable epoxy resin composition, which contains (a) an epoxy resin component comprising an alicyclic epoxy resin and an aromatic-ring containing epoxy resin, (b) a cationic photoinitiator component, and (c) a filler selected from oxides, hydroxides and carbonates containing a Group II element. This composition exhibits improved adhesive strength to a glass such as an alkali glass, particularly a sodium-containing glass, or a metal.
Type:
Grant
Filed:
May 7, 2003
Date of Patent:
November 25, 2008
Assignee:
Henkel Corporation
Inventors:
Yoke Ai Gan, Chunfu Chen, Kazuyo Terada
Abstract: An article of manufacture comprising a sag-resistant nucleus-forming monolithic composite capable of being located within a hollow interior portion of a structural material and being expanded therein. Also, articles of manufacture comprising open-cellular structural material containing within the open-cell or cell thereof, at least one sag-resistant nucleus-forming monolithic composite. The composite is desirably in the shape of a plug that is similar or close to similar to the shape of the hollow interior. In addition, there is described a process that comprises forming a pre-shaped sag-resistant nucleus-forming monolithic composite for use in reinforcing and stiffening a normally open-cellular structural material. Also described is a process for reinforcing or stiffening a normally open-cellular structure, any tubular structure, or any channel structure, by putting at least one sag-resistant nucleus-forming monolithic composite within a hollow interior portion of the structure.
Type:
Grant
Filed:
September 2, 2003
Date of Patent:
November 18, 2008
Assignee:
Henkel Corporation
Inventors:
Raymond S. Wong, Stanley L. Lehmann, Wei Helen Li
Abstract: A room temperature vulcanizing silicone polymer composition including: a) as part of the silicone polymer, a segment including a silicone polymer of Formula (I): b) a finely-divided inorganic filler present in an amount of at least about 25% by weight of the total composition. Enhanced elongation ability is possessed by these compositions.
Type:
Grant
Filed:
November 28, 2005
Date of Patent:
November 18, 2008
Assignee:
Henkel Corporation
Inventors:
Robert P. Cross, Thomas Fay-Oy Lim, Hsien-Kun Chu, Mathias E. Liistro, Jr., Alfred A. DeCato, Debora E. Duch, Bahram Issari
Abstract: A nozzle assembly (3, 20) with a reusable break-off cap (20) for dispensing a product from a container (1). On a dispensing end (5) of the nozzle (3) a break-off cap (20) is integrally formed thereon and closes off the dispensing end (5) of the nozzle (3). The break-off cap (20) is removable by breaking a frangible connection (22) between the nozzle (3) and the break-off cap (20). Removing the break-off cap opens the dispensing end (5) of the nozzle (3) thereby allowing product to be dispensed through the nozzle (3). The break-off cap (20) removed from the nozzle (3) can then be re-engaged with the nozzle (3) to close off the dispensing end (5) thereby preventing further product from being dispensed. The cap can be attached to or removed from the nozzle (3) as often as a user requires.
Type:
Grant
Filed:
May 21, 2004
Date of Patent:
October 7, 2008
Assignee:
Loctite (R & D) Limited
Inventors:
Peter C. Rushe, Gary J. Leonard, Robert J. Lambert
Abstract: An activator composition for accelerating hardening and achieving cure-through-volume of cyanoacrylate adhesives) comprising; (a) one or more compounds selected from the group consisting of :(i) pyrazine; or a pyrazine derivative; said pyrazine derivative being pyrazine substituted with at least one electron-releasing group; (ii) pyridine N oxides substituted with at least one electron-releasing group; or (iii) 2,6 pyridines being pyridines substituted in the 2- and 6-positions by substituents, at least one of the substituents being electron-releasing provided that both substituents are not methyl; and (b) a volatile solvent carrier for the compound.
Type:
Grant
Filed:
November 13, 2002
Date of Patent:
October 7, 2008
Assignee:
Loctite (R&D) Limited
Inventors:
Bernard Ryan, Hanns Misiak, James Houlihan
Abstract: The present invention relates to phenylgycines and derivatives thereof, 1,4-aminobenzoyl compounds, and phenyl pyrazolinones as cure accelerators for anaerobically curable compositions.
Type:
Grant
Filed:
March 21, 2005
Date of Patent:
August 12, 2008
Assignee:
Henkel Corporation
Inventors:
Andrew D. Messana, Philip T. Klemarczyk, Karen R. Brantl
Abstract: The present invention relates to new cure accelerators for anaerobic curable compositions. These anaerobic cure accelerators are generally sulfonimide derivatives and sulfonamide derivatives.
Type:
Grant
Filed:
March 7, 2005
Date of Patent:
August 12, 2008
Assignee:
Henkel Corporation
Inventors:
Andrew D. Messana, Philip T. Klemarczyk, Karen R. Brantl
Abstract: The present invention relates to primer compositions in non-flowable form. More particularly, the present invention relates to non-flowable primer compositions which are particularly useful for use with curable adhesive and sealant compositions in threadlocking, retaining, bonding and sealing applications and which can be packaged in a convenient pocket-sized applicator dispenser.
Type:
Grant
Filed:
December 15, 2006
Date of Patent:
August 5, 2008
Assignee:
Henkel Corporation
Inventors:
Prakash S. Patel, Shabbir Attarwala, Matthew P. Burdzy, Qinyan Zhu
Abstract: The reversible separation of bonded joints by applying alternating electromagnetic fields is described. The bonded joint consists of at least one primer layer which contains nanoscale particles which have ferromagnetic, ferrimagnetic, superparamagnetic or piezoelectric properties. As a result of the alternating electromagnetic fields, large amounts of localised heat are produced in the primer layer of the bonded joint. This localised heat input causes, in the case of adjacent thermoplastic adhesive layers, softening of the thermoplastic binder. If thermoset adhesives are adjacent to the boundary layer of the primer, then the cross-linked structure in the binder matrix is broken up due to the high degree of localised warming. In both cases quasi-adhesive substrate separation with a low energy input is enabled as a result of the high localised warming of the boundary layer.
Abstract: This invention relates to (meth)acrylate-based polymerizable compositions and adhesive systems prepared therefrom, which include a alkylated borohydride or tetraalkyl borane metal or ammonium salt and a polymerizable siloxane. The inventive compositions and adhesive systems are particularly well suited for bonding applications which involve at least one low energy bonding surface, for example, the polyolefins, polyethylene, and polypropylene.
Abstract: This invention relates to toughened cyanoacrylate compositions which exhibit improved peel strengths and fixture speeds. The toughened cyanoacrylate compositions include a toughening agent comprising poly(vinychloride-co-vinyl acetate) and poly(methylmethacrytlate).
Abstract: Quaternary boron salts are used as initiators of polymerisation in adhesive compositions for bonding low surface energy substrates such as polyolefins. The quaternary boron salts are of the formula I wherein R1 is C1-C10 alkyl, R2, R3 and R4, which may be the same or different, are, C1-C10 alkyl or C3-C10 cycloalkyl, phenyl, or phenyl-substituted C1-C10 alkyl or C3-C10 cycloalkyl, provided that any two of R1-R4 may optionally be part of a carbocyclic ring, and M+ is a metal ion or a quaternary ammonium ion. When M+ is a quaternary ammonium ion, the initiator may be used in a two-part composition having a (meth)acrylate monomer in both parts and the initiator compound in one part, the two parts being in a weight ratio of about 1:1.
Type:
Grant
Filed:
April 14, 2003
Date of Patent:
May 13, 2008
Assignee:
Loctite (R & D) Limited
Inventors:
Brendan J. Kneafsey, Gerry Coughlan, Thomas B. Harty