Abstract: This invention relates to (meth)acrylate based polymerizable compositions and multipart adhesive systems prepared therefrom, which include an aziridine-containing compound in a carrier material with which the aziridine-containing compound is unreactive. The inventive composition demonstrates a flash point above 140° F., desirably above 200° F., for each of the parts of the adhesive system. To achieve the physical properties of the inventive compositions and adhesive systems, it is desirable for the carrier material to have such flash points; however, provided that in their entirety the inventive compositions and adhesive systems have such flash points, it is not necessary for the carrier material itself to have such flash points. The inventive compositions and adhesive systems also include a package for controlling the rate of cure and indicating the extent of cure.

Abstract: A composition including at least one anaerobically polymerizable compound; and at least one condensation product of an aldehyde and or ketone/with a polyol. The invention also provides a composition as described above which is in the form of a soft solid, for example, in the form of a stick. A two-part composition is provided, comprising a first part containing at least one polymerizable compound; and a second part containing at least one curing component for polymerizing the composition, wherein at least one of the first or second parts additionally comprises at least one gelling or solidifying agent. A kit is provided comprising the composition according to the invention which includes at least one primer component and at least one carrier solvent for the primer component, and a second composition which includes at least one anaerobically polymerizable compound and at least one condensation product of an aldehyde and or ketone/with a polyol.

Abstract: Metal alkyl borohydrides are used as initiators of polymerisation, particularly in adhesive compositions for bonding a wide range of substrates including low surface energy substrates such as polyolefins. As described, the metal alkyl borohydrides are of the formula I or II. wherein R1 is C1-C10 alkyl, R2 and R3, which may be the same or different, are H, D, C1-C10 alkyl or C3-C10 cycloalkyl, phenyl, or phenyl-substituted C1-C10 alkyl or C3-C10 cycloalkyl, provided that any two of R1-R3 may optionally be part of a carbocyclic ring, and M+ is a metal ion. In particular, alkali metal trialkyl borohydrides are used, the alkali metal salt being selected from: Lithium triethylborohydride, Sodium triethylborohydride, Potassium triethylborohydride, Lithium tri-sec-butylborohydride, Sodium tri-sec-butylborohydride, Potassium tri-sec-butylborohydride, and Lithium triethylborodeuteride. Other exemplified compounds which are less effective on low surface energy substrates include Lithium 9-borabicyclo [3.3.

Abstract: This invention relates to cyanoacrylate-containing compositions that include, in addition to the cyanoacrylate component, certain accelerators to improve fixture speeds on certain substrates.

Abstract: This invention relates to cyanoacrylate-containing compositions that include, in addition to the cyanoacrylate component, certain accelerators to improve fixture speeds on certain substrates.

Abstract: A composition including at least one solvent for cured product and at least one gelling or solidifying agent. The invention also provides a composition described above which is in the form of a soft solid, for example, in the form of a stick. A pack is also provided, comprising (i) a shaped mass of a composition, which includes at least one solvent for a cured product and at least one gelling or solidifying agent and a container (1) for the composition. The container (1) has a mechanism for expelling the shaped mass.

Abstract: A cyanoacrylate adhesive composition having a toughening agent comprising poly(vinylidene-co-acrylonitrile) in combination with fumed silica. A useful amount of poly(vinylidene-co-acrylonitrile) is about 1.0% by weight to about 20.0% by weight fumed silica is usefully present in amounts of 1-10% by wt.

Abstract: A radiation-curable composition that includes a cyanoacrylate component or a cyanoacrylate-containing formulation, a photoinitiated radical generating component, and a photoinitiator component is provided.

Abstract: This invention relates to (meth)acrylate based polymerizable compositions and adhesive systems prepared therefrom, which include an initiator system comprising a complex of an organoborane with a complexing agent, an aziridine-containing compound, and a carrier material with which the initiator system is unreactive and which renders the composition having a flash point above 140° F. The inventive compositions desirably have a flash point above 200° F., for each of the parts of the adhesive system. To achieve the physical properties of the inventive compositions and adhesive systems, it is desirable for the carrier material to have such flash points; however, provided that in their entirety the inventive compositions and adhesive systems have such flash points, it is not necessary for the carrier material itself to have such flash points. The inventive compositions and adhesive systems also include a package for controlling the rate of cure and indicating the extent of cure.

Abstract: A material for sealing threaded pipe joints includes a multifilament yarn ready-coated with a joint sealing composition. The material is packaged in a dispenser from which the coated yarn may be supplied for direct application to a threaded area of a pipe.

Abstract: This invention relates to curable epoxy-based compositions for use in the field of microelectronics, such as those having an epoxy compound which has two or more epoxy groups per molecule, optionally a polythiol compound which has two or more thiol groups per molecule, a latent hardener, and at least one solid organic acid which is substantially insoluble in a mixture of the foregoing components at room temperature. The solid organic acid may be selected from the group consisting of: aliphatic, cycloaliphatic and aromatic carboxylic acids and derivatives thereof, aliphatic, cycloaliphatic, and aromatic quinones and derivatives thereof, phenols and derivatives thereof and enolisable aliphatic, cycloaliphatic and aromatic compounds and derivatives thereof. The solid organic acid should have a pKa of less than or equal to about 12.0, desirably less than or equal to about 10, and often less than or equal to about 9.0, such as less than or equal to about 7.5.

Abstract: Use of an initiator system comprising:

Abstract: Quaternary boron salts are used as initiators of polymerisation in adhesive compositions for bonding low surface energy substrates such as polyolefins.

Abstract: A one-part adhesive composition for bonding glass including: (a) a cyanoacrylate monomer; (b) 15 to 60% w/w of at least one plasticizer by weight of the composition; (c) 0.01% to 5.0% w/w of at least one silane by weight of the composition.

Abstract: The present invention provides a new class of materials effective as curatives for anaerobic adhesive compositions. The addition of these materials into anaerobic adhesives as a replacement for conventional curatives, such as APH, surprisingly provides at least comparable cure speeds and physical properties for the reaction products formed therefrom.

Abstract: An air-activatable polymerisable composition useful, in the field of adhesives, sealants, surface coatings, moulding resins and composite matrices, comprises: a) at least one free-radically polymerisable monomer, b) an activator system for effective polymerisation of the free-radically polymerisable monomer, said activator system comprising at least one auto-oxidisable compound which is a beta diketone, c) a soluble ionic salt, particularly a transition metal salt, d) and a weak acid or a latent weak acid, with the proviso that the composition does not contain a peroxide, or a peroxide precursor which produces peroxide in the absence of air, or any ingredient which is a significant source of radicals in the absence of air.

Abstract: A device for winding pipe sealant filamentary materials onto a pipe comprising: (a) a retainer for retaining a length of filamentary material; and (b) an elongate dispensing aid projecting from said retainer, the dispensing aid comprising at least one guide located at a position spaced from the retainer and through which the filamentary material passes. The material is for sealing threaded pipe joints. The device may be motorized for rotational motion, for example by attachment to a power tool. The device may also have a locating portion for engaging an end of a pipe to which the filamentary material is to be applied. The locating portion may act as an automatic adjuster of the position of the device. Relative rotation of the dispensing aid and the automatic adjuster actuates the automatic adjuster. The device allows for ease of application of pipe sealant material to pipes and may be hand-held.

Abstract: A container is described which is suitable for use with anaerobic products such as sealants and adhesives which cure, set-up or polymerise in the absence of air. The container is flexible having at least one wall made of a deformable, oxygen permeable material, which defines a cavity for receiving and retaining the anaerobic product. The wall may be made of polyethylene or polypropylene.

Abstract: An article of manufacture which comprises a material for sealing threaded pipe joints comprising a multifilament yarn ready-coated with a joint sealing composition and packaged in a dispenser from which the coated yarn may be supplied for direct application to a threaded area of a pipe.

Abstract: The invention provides a device and method for dispensing fluid materials from a product reservoir onto a substrate. The device includes at least one dispensing nozzle having at least one inner conduit leading to an exit port and adaptable to be in fluid communication with a supply source for the fluid dispensable material. The nozzle further comprises an end portion defining the exit port such that a ribbon of fluid dispensable material can be applied to the substrate. The nozzle is mountable on means that effect substantially perpendicular free movement of the nozzle relative to the substrate, such that the end portion of the nozzle maintains contact with the fluid material applied to the substrate. During dispensing, movement towards the substrate is effected by an applied force and movement away from the substrate is effected by a thrust exerted by the dispensed fluid material against said end portion of the nozzle and the dispensable material in the exit port.