A process for end-capping a dimethylsilanol terminated polydiorganosiloxane with one or more di, tri and/or tetra alkoxysilanes in the presence of an end-capping catalyst starting material is provided. The end-capping catalyst starting material comprises one or more linear, branched or cyclic molecules comprising at least one amidine group, guanidine group, or derivatives of the amidine group and/or guanidine group or a mixture thereof. The resulting capped polymeric material may be utilized as a polymer in, e.g., a polydiorganosiloxane elastomer composition.

A process for end-capping a dimethylsilanol terminated polydiorganosiloxane with one or more di, tri and/or tetra alkoxysilanes in the presence of an end-capping catalyst starting material is provided. The end-capping catalyst starting material comprises one or more linear, branched or cyclic molecules comprising at least one amidine group, guanidine group, or derivatives of the amidine group and/or guanidine group or a mixture thereof. The resulting capped polymeric material may be utilized as a polymer in, e.g., a polydiorganosiloxane elastomer composition.

An ultra-high solids content primer coating composition comprising: (i) 5.0 to 50 wt % of at least one bisphenol F epoxy resin; (ii) 1.5 to 12 wt % of at least one silane; (iii) 0 to 20 wt % of at least one hydrocarbon resin; (iv) 0 to 15 wt % of at least one reactive diluent; (v) at least one curing agent; wherein said composition has a solids content of at least 90 wt % according to ASTM D5201-05; wherein said composition has a viscosity of 200 to 800 cps at 23° C. and 50% RH (ASTM D4287); and wherein the ratio between hydrogen equivalents in the curing agent and epoxy equivalents of the coating composition is in the range 50:100 to 120:100

Provided is: a curable organopolysiloxane composition which is easily cured at room temperature, in addition to having excellent adhesiveness with respect to various base materials, a protectant or adhesive composition of electric/electronic parts including this curable organopolysiloxane composition, as well as an electric/electronic equipment wherein electric/electronic parts are encapsulated or sealed by these curable organopolysiloxane compositions. A room temperature curable organopolysiloxane composition of a multicomponent type which is individually stored, including: (A) a diorganopolysiloxane blocked at a molecular terminal with a hydroxysilyl group; (B) a diorganopolysiloxane blocked at a molecular terminal with an alkoxysilyl group; (C) a functional filler; (D) a compound having two or more alkoxy groups bonded to a silicon atom per molecule; and (E) a catalytic amount of a catalyst for a condensation reaction.

Provided is: a curable organopolysiloxane composition which is easily cured at room temperature, in addition to having excellent adhesiveness with respect to various base materials, a protectant or adhesive composition of electric/electronic parts including this curable organopolysiloxane composition, as well as an electric/electronic equipment wherein electric/electronic parts are encapsulated or sealed by these curable organopolysiloxane compositions. A room temperature curable organopolysiloxane composition of a multicomponent type which is individually stored, including: (A) a diorganopolysiloxane blocked at a molecular terminal with a hydroxysilyl group; (B) a diorganopolysiloxane blocked at a molecular terminal with an alkoxysilyl group; (C) a functional filler; (D) a compound having two or more alkoxy groups bonded to a silicon atom per molecule; and (E) a catalytic amount of a catalyst for a condensation reaction.

Provided is: a curable organopolysiloxane composition which is easily cured at room temperature, in addition to having excellent adhesiveness with respect to various base materials, a protectant or adhesive composition of electric/electronic parts including this curable organopolysiloxane composition, as well as an electric/electronic equipment wherein electric/electronic parts are encapsulated or sealed by these curable organopolysiloxane compositions. A room temperature curable organopolysiloxane composition of a multicomponent type which is individually stored, including: (A) a diorganopolysiloxane blocked at a molecular terminal with a hydroxysilyl group; (B) a diorganopolysiloxane blocked at a molecular terminal with an alkoxysilyl group; (C) a functional filler; (D) a compound having two or more alkoxy groups bonded to a silicon atom per molecule; and (E) a catalytic amount of a catalyst for a condensation reaction.

Disclosed herein are compositions comprising from about 26 wt. % to about 89 wt. % of a polycarbonate polymer component, from about 0.5 wt. % to about 20 wt. % of phosphazene-based flame retardant, from about 0.01 wt. % to about 4 wt. % of a siloxane component, and from about 10 wt. % to about 50 wt. % of a filler component, wherein all weight percent are based on the total weight of the composition. The composition may exhibit a notched Izod impact strength of at least 150 J/m when tested in accordance with ASTM D256 at 23° C. and 5 ft-lb on a 3.2 mm bar specimen, a tensile elongation less than or equal to 2% when tested in accordance with D638 at 5 mm/min at break on a Type I bar specimen, and the composition achieves a p(FTP) of at least 0.85 for normal V0 of at 1.2 mm according to UL 94 (2019).

Disclosed herein are compositions comprising from about 26 wt. % to about 89 wt. % of a polycarbonate polymer component, from about 0.5 wt. % to about 20 wt. % of phosphazene-based flame retardant, from about 0.01 wt. % to about 4 wt. % of a siloxane component, and from about 10 wt. % to about 50 wt. % of a filler component, wherein all weight percent are based on the total weight of the composition. The composition may exhibit a notched Izod impact strength of at least 150 J/m when tested in accordance with ASTM D256 at 23° C. and 5 ft-lb on a 3.2 mm bar specimen, a tensile elongation less than or equal to 2% when tested in accordance with D638 at 5 mm/min at break on a Type I bar specimen, and the composition achieves a p(FTP) of at least 0.85 for normal V0 of at 1.2 mm according to UL 94 (2019).

Disclosed herein are compositions comprising from about 26 wt. % to about 89 wt. % of a polycarbonate polymer component, from about 0.5 wt. % to about 20 wt. % of phosphazene-based flame retardant, from about 0.01 wt. % to about 4 wt. % of a siloxane component, and from about 10 wt. % to about 50 wt. % of a filler component, wherein all weight percent are based on the total weight of the composition. The composition may exhibit a notched Izod impact strength of at least 150 J/m when tested in accordance with ASTM D256 at 23° C. and 5 ft-lb on a 3.2 mm bar specimen, a tensile elongation less than or equal to 2% when tested in accordance with D638 at 5 mm/min at break on a Type I bar specimen, and the composition achieves a p(FTP) of at least 0.85 for normal V0 of at 1.2 mm according to UL 94 (2019).

The present application relates to a coating composition, a process for preparing the coating composition and an article containing a coating formed by the coating composition. It relates in particular to a dual-curing coating system, comprising: a film-forming resin composition comprising an aqueous dispersion of at least one carboxyl functional polymer; a first crosslinking agent comprising an epoxy silane; and a second crosslinking agent comprising an isocyanate.