Abstract: 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.

Abstract: This invention relates generally to heat curable compositions, particularly well utilized for use as impregnation sealants curable using hydrosilation chemistry. The heat curable compositions of the present invention can be stored and shipped as a one-part composition. The composition includes at least one curable unsaturated organic component, at least one co-reactant, which has at least two functional groups reactive with the organic component, and at least one catalyst of initiating the cure of the composition.

Abstract: Anaerobic and heat curing polymerizable impregnation compositions for sealing pourous articles are disclosed. The compositions contain glycerol, oxygenated glycerol or (meth)acrylate glycerol to improve the washability of the compositions in aqueous solutions. The compositions may contain other compounds to effect the curing characteristics of the sealants.

Abstract: The present invention provides compositions and methods for removing water from a sealant composition. This includes the addition of a particularly selected anhydride to a sealant composition and further addition of an acrylic acid, in order to remove water from a sealant composition.

Abstract: The present invention relates to anaerobic curing impregnation sealant compositions which are readily separable from water upon mixing.

Abstract: 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.

Abstract: The present invention relates to heat curing impregnation sealant compositions, which are readily separable from water upon mixing.

Abstract: Anaerobic adhesive compositions, the reaction products of which demonstrate improved cure speed and bond strength are disclosed. A high percentage of ultimate bond strength is reached within the first hour of room temperature cure. Higher ultimate bond strengths as compared to conventional compositions are achieved. The anaerobic adhesive compositions incorporate an adhesion promoter which contributes to these properties.

Abstract: 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.

Abstract: An impregnation sealant composition comprises a low viscosity vulcanizable silicone. The silicone is selected from the group consisting of (i) a heat curable silicone composition formed as the reaction product in the presence of a platinum catalyst of a first silicon containing material containing at least two SiH functionalities and having a molecular weight less than 2000 with a second silicon containing material containing at least two ethylenically unsaturated functionalities and having a molecular weight less than 2000, said silicone composition having a ratio of SiH to Si-ethylenically unsaturated functionalities of from about 0.8 to about 1.2; and (ii) a room temperature vulcanizing silicone composition formed as the reaction product of a silicone fluid containing at least two SiOH functionalities and having a molecular weight less than 2000 with a silane cross-linker of formula (I):R.sub.n Si(X).sub.

Abstract: A curable impregnation sealant composition comprising a curable monomer, e.g., a (meth)acrylic acid ester monomer, of a type adapted for curing by heat and/or substantial absence of oxygen, and a curable monomer-soluble reactive bismaleimide of a type and in a solubilized amount providing enhanced high temperature resistance in the impregnation sealant composition when cured.

Abstract: A method of treating wastewater including a heat-curable (meth)acrylic monomer-containing composition, at temperature below that necessary to effect heat-curing of the composition. The wastewater may be produced by aqueous washing of porous parts impregnated with a sealant composition containing such monomer. The monomer-containing wastewater is (1) adjusted in pH to a value in the range of from about 8 to about 10, and (2) contacted with an effective amount of a reducing agent which is polymerizingly effective for the monomer, to yield corresponding polymer from the monomer. The wastewater is mixed with a cationic flocculating agent in sufficient quantity to flocculate the polymer in the wastewater, and the resulting wastewater is physically separated to recover a monomer- and polymer-reduced wastewater effluent which may be discharged to receiving waters.

Abstract: A method of treating wastewater containing (meth)acrylic monomer, such as is produced by aqueous washing of porous parts impregnated with a sealant composition containing such monomer. The monomer-containing wastewater is (1) adjusted in pH to a value in the range of from about 8 to about 10, and (2) contacted with an effective amount of a reducing agent which is polymerizingly effective for the monomer, to yield corresponding polymer from the monomer. The wastewater is mixed with a cationic flocculating agent in sufficient quantity to flocculate the polymer in the wastewater, and the resulting wastewater is physically separated to recover a monomer- and polymer-reduced wastewater effluent which may be discharged to receiving waters.