A curable silicone composition is provided. The composition comprises: (A) an epoxy-functional silicone resin having monovalent aromatic hydrocarbon groups; (B) an epoxy-functional silicone having monovalent aromatic hydrocarbon groups; and (C) a cationic photoinitiator. Optionally, the composition further comprises (D) an epoxy-functional silicone free of monovalent aromatic hydrocarbon groups. The composition has excellent curability with UV radiation, and further with heating, generally forms a cured product with excellent transparency and mechanical properties.

A curable silicone composition is provided. The composition comprises: (A) an epoxy-functional silicone resin having monovalent aromatic hydrocarbon groups; (B) an epoxy-functional silicone having monovalent aromatic hydrocarbon groups; and (C) a cationic photoinitiator. Optionally, the composition further comprises (D) an epoxy-functional silicone free of monovalent aromatic hydrocarbon groups. The composition has excellent curability with UV radiation, and further with heating, generally forms a cured product with excellent transparency and mechanical properties.

In some embodiments, ethylene-propylene random copolymers as viscosity modifiers were synthesized with pyridyldiamido catalyst systems and a chain transfer agent. In some embodiments, the present disclosure provides for ethylene-propylene random copolymers having an ethylene content between about 45 wt % and about 55 wt %. In some embodiments, the ethylene-propylene random copolymer is used as a viscosity modifier in a lubricating composition and a fuel composition.

In some embodiments, ethylene-propylene random copolymers as viscosity modifiers were synthesized with pyridyldiamido catalyst systems and a chain transfer agent. In some embodiments, the present disclosure provides for ethylene-propylene random copolymers having an ethylene content between about 45 wt % and about 55 wt %. In some embodiments, the ethylene-propylene random copolymer is used as a viscosity modifier in a lubricating composition and a fuel composition.

A crosslinked adhesive composition comprising: (i) a polymer; (ii) solid particles embedded within the polymer; and (iii) a multiplicity of boronate linkages crosslinking between the polymer and solid particles, wherein the boronate linkages have the formula

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wherein the polymer and particles are connected to each other through the boronate linkages, and the crosslinked adhesive composition has an ability to bond surfaces and a further ability to thermally debond and rebond the surfaces. Also described herein is a method of bonding first and second surfaces together, the method comprising placing the above-described crosslinked adhesive composition onto the first surface and pressing the second surface onto the crosslinked adhesive composition on the first surface.

Described are sealing primer compositions that can be used to reduce paint defects such as pops or vapor boil on painted plastic substrates, as well as related methods for sealing plastic substrates, and sealed plastic substrates. Sealing primer compositions of the invention include a functionalized polydiene polymer such as a hydroxylated or other functional-group-containing polybutadiene polymer.

Provided is a high-stability ion-selective membrane (ISM) containing a thallium porphyrin complex as an ionophore, the ISM containing: a compound represented by the following formula (1); a polymer; and a membrane solvent.

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Provided is a high-stability ion-selective membrane (ISM) containing a thallium porphyrin complex as an ionophore, the ISM containing: a compound represented by the following formula (1); a polymer; and a membrane solvent.

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Embodiments in accordance with the present invention encompass compositions encompassing a procatalyst, a photoacid generator, a photosensitizer and one or more monomers which undergo vinyl addition polymerization when said composition is exposed to suitable UV irradiation and heated to a temperature from 50° C. to 100° C. to form a substantially transparent film. The monomers employed therein have a range of refractive index from 1.4 to 1.6 and thus these compositions can be tailored to form transparent films of varied refractive indices. Accordingly, compositions of this invention are useful in various opto-electronic applications, including as coatings, encapsulants, fillers, leveling agents, among others.

Embodiments in accordance with the present invention encompass compositions encompassing a procatalyst, a photoacid generator, a photosensitizer and one or more monomers which undergo vinyl addition polymerization when said composition is exposed to suitable UV irradiation and heated to a temperature from 50° C. to 100° C. to form a substantially transparent film. The monomers employed therein have a range of refractive index from 1.4 to 1.6 and thus these compositions can be tailored to form transparent films of varied refractive indices. Accordingly, compositions of this invention are useful in various opto-electronic applications, including as coatings, encapsulants, fillers, leveling agents, among others.