Loctite Corporation

Raven Lining Systems, Inc.

Loctite (ireland) Limited

David J Dunn

Kieran F Drain

Mark J Holmes

James P Moran, Jr

Elliott Frauenglass

David L Stanley

Patrick P Vano

Colin Watson

William E Ishmael, Jr

A hybrid polyurethane/polyurea polymer suitable for forming a coating on a structure which is in contact with water includes the reaction product of a polyol component consisting of one or more polyols, a polyamine, and a curing agent, such as a polyisocyanate. The polyol component includes a Novolac-type polyether polyol.

Hybrid novolac polyurea/polyurethane

A two-part epoxy composition is provided that comprises a first part having a mixture of an epoxy resin and an anhydride, and a second part having a curing agent. Also provided is a method for making a substantially bis-&#x221d;-glycol free epoxy resin for two-part epoxy compositions, and a method for applying a two-part epoxy composition to a system of water piping.

Two-part epoxy composition

Polymerizable acrylic monomer adhesive systems comprising thirty to eighty percent by weight powdered aluminum filler material are disclosed. More specifically, the adhesive compositions comprise at least one polymerizable acrylate monomer system; an effective amount for initiation of a free radical initiator; and elemental (atomized) aluminum metal powder or powdered alumina.

Process of bonding surfaces employing/anaerobic aluminum filled

A co-curable composition, having utility as a first part of a two-part cationically curable composition and containing a latent curing component which is reactive with a latent curing component in a second part of the two-part composition to form curingly effective cations for the two-part composition, such co-curable composition comprising: (i) a cationically polymerizable material, and (ii) a dioxane-complexed metal salt of a non-nucleophilic anion. Also disclosed is a two-part composition curable by contact of respective parts with one another, comprising first and second parts of the aforementioned types. A preferred class of cation species comprises carbenium ions derived from reaction of an organic halide compound, as the first component, with a metal salt of a non-nucleophilic anion such as SbCl.sub.6.sup.-, SbCl.sub.3.sup.-, SbF.sub.6.sup.-, AsF.sub.6.sup.-, SnCl.sub.5.sup.-, PF.sub.6.sup.-, BF.sub.4.sup.-, CF.sub.3 SO.sub.3.sup.-, and ClO.sub.4.sup.-, as the second component. The respective parts of the two-part composition may be applied to matable surfaces which then are contacted to effect rapid bonding cure of the composition.

Compositions curable by in situ generation of cations

Aluminum filled compositions

A two-part composition curable by contact of respective parts with one another, comprising: a first part comprising a cationically polymerizable material and a first latent curing component; and a second part comprising a cationically polymerizable material and a second latent curing component which is reactive with the first component to form cations which are curingly effective for the resin. A preferred class of cation species comprises carbenium ions derived from reaction of organic halide compounds, as the first component, with silver salts of non-nucleophilic anions, e.g., SbCl.sub.6.sup.-, SbCl.sub.3.sup.-, SbF.sub.6.sup.-, AsF.sub.6.sup.-, SnCl.sub.5.sup.-, PF.sub.6.sup.-, BF.sub.4.sup.-, CF.sub.3 SO.sub.3.sup.- and ClO.sub.4.sup.-, as the second component, The respective parts of the two-part composition may be applied to matable surfaces which then are contacted to effect rapid bonding cure of the composition.

An adhesive composition which exhibits fast curing through large gaps is disclosed. The composition comprises (A) at least one addition polymerizable vinyl-type monomer; (B) at least one free radical stabilizer; and (C) a free radical cure system. The free radical cure system comprises (i) at least one free radical initiator, and (ii) at least one ferrocene type compound.

Two part self-indicating adhesive composition

Compounds with a plurality of oxirane functional groups can be cured to a fixture in less than one minute with a catalyst composition of a trityl or tropylium salt of a non-nucleophillic anion and a suitable solvent. Typical catalyst salts include trityl tetrafluoroborate, trityl hexachloroantimonate and tropylium hexafluorophosphate. The catalyst composition may conveniently be extended with liquid polymeric vehicles and acidic fillers.

Rapid curing epoxide composition employing stable carbenium salt catalyst

A method for coating the internal threads of a fastener includes a rotatable base for holding the fastener, and an applicator having a discharge orifice extending through its side wall which contacts the internal threads at a single point of tangency, the axis of the applicator being offset from the rotational axis of the base. Thus, an induced side load force is created at the point of tangency for effecting the pressing of discharged sealant into the roots of the threads. Differently sized internally threaded elements can be coated in accordance with the invention while using the same sealant applicator.

Method for coating internal threads of a fastener

A composition of matter which is useful in a process for impregnating and sealing of porous articles, the composition comprising:

Composition and process for the impregnation and sealing of porous

A device for coating the internal threads of a fastener includes a rotatable base for holding the fastener, and an applicator having a discharge orifice extending through its side wall which contacts the internal threads at a single point of tangency, the axis of the applicator being offset from the rotational axis of the base. Thus, an induced side load force is created at the point of tangency for effecting the pressing of discharged sealant into the roots of the threads. Differently sized internally threaded elements can be coated in accordance with the invention while using the same sealant applicator.

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Twinsburg, OH, United States of America

David J Dunn