Provided is a polycarbonate-polyorganosiloxane copolymer, which is produced by using a diol monomer (a1) and a polyorganosiloxane (a2) satisfying the following condition, including: a polyorganosiloxane block (A-1) including a specific repeating unit; and a polycarbonate block (A-2) formed of a specific repeating unit: a mixture, which is obtained by bringing the diol monomer (a1), the polyorganosiloxane (a2), a carbonic acid diester, and a basic catalyst present at the same amount ratio as that at a time of production of the polycarbonate-polyorganosiloxane copolymer into contact with each other at from 100° C. to 250° C. for from 0.5 hour to 5 hours, has a haze value of 30 or less measured under conditions of 23° C. and an optical path length of 10 mm in conformity with ISO 14782:1999.

Provided is a polycarbonate-polyorganosiloxane copolymer, which is produced by using a diol monomer (a1) and a polyorganosiloxane (a2) satisfying the following condition, including: a polyorganosiloxane block (A-1) including a specific repeating unit; and a polycarbonate block (A-2) formed of a specific repeating unit: a mixture, which is obtained by bringing the diol monomer (a1), the polyorganosiloxane (a2), a carbonic acid diester, and a basic catalyst present at the same amount ratio as that at a time of production of the polycarbonate-polyorganosiloxane copolymer into contact with each other at from 100° C. to 250° C. for from 0.5 hour to 5 hours, has a haze value of 30 or less measured under conditions of 23° C. and an optical path length of 10 mm in conformity with ISO 14782:1999.

The present disclosure relates to a coating composition, comprising a fluoropolymer component in the form of a fluoropolymer micropowder having a weight average molecular weight of from 300,000 g/mol to 400,000 g/mol, a binder resin, a hydroxy-functional silicone resin; and a silicone oil, as well as articles coated with the composition.

The present disclosure relates to a coating composition, comprising a fluoropolymer component in the form of a fluoropolymer micropowder having a weight average molecular weight of from 300,000 g/mol to 400,000 g/mol, a binder resin, a hydroxy-functional silicone resin; and a silicone oil, as well as articles coated with the composition.

A base composition for forming a release coating composition is disclosed. The base composition comprises (A) a silicate resin that is a liquid at 25° C. in the absence of any solvent. The (A) silicate resin includes an average of at least one silicon-bonded ethylenically un saturated group per molecule. The composition further comprises (B) an organopolysiloxane including an average of at least two silicon-bonded ethylenically un saturated groups per molecule. The (A) silicate resin is miscible with the (B) organopolysiloxane in the absence of any solvent. A method of preparing the base composition and a method of preparing a release coating composition are also disclosed.

A base composition for forming a release coating composition is disclosed. The base composition comprises (A) a silicate resin that is a liquid at 25° C. in the absence of any solvent. The (A) silicate resin includes an average of at least one silicon-bonded ethylenically un saturated group per molecule. The composition further comprises (B) an organopolysiloxane including an average of at least two silicon-bonded ethylenically un saturated groups per molecule. The (A) silicate resin is miscible with the (B) organopolysiloxane in the absence of any solvent. A method of preparing the base composition and a method of preparing a release coating composition are also disclosed.

A composition for forming a release coating is disclosed. The composition comprises (A) an organopolysiloxane comprising the reaction product of: (i) a silicone resin having a particular formula; and (ii) a cyclic siloxane; in the presence of a polymerization catalyst. The composition further comprises (B) an organopolysiloxane including an average of at least two silicon-bonded ethylenically unsaturated groups per molecule.

A composition for forming a release coating is disclosed. The composition comprises (A) an organopolysiloxane comprising the reaction product of: (i) a silicone resin having a particular formula; and (ii) a cyclic siloxane; in the presence of a polymerization catalyst. The composition further comprises (B) an organopolysiloxane including an average of at least two silicon-bonded ethylenically unsaturated groups per molecule.

A curable organopolysiloxane composition that is one component, has superior storage stability, favorable curability and adhesion at relatively low temperatures, and an appropriate usable time is provided. In particular, the composition has excellent curability even at temperatures of 80° C. or lower and excellent adhesion to resins such as polyester and polyphenylene sulfide. The composition comprises: (A) an organopolysiloxane having at least two alkenyl groups in each molecule thereof; (B) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms in a molecule; (C) a hydrosilylation reaction catalyst; (D) a condensation reaction catalyst or a condensation reaction product thereof selected from the group consisting of tetra-tert-butoxy titanium, di(isopropoxy)bis(ethyl acetoacetate)titanium, and an aluminum chelate complex; and (E) a curing inhibitor. When cured, the composition provides a silicone rubber composition with a JIS A hardness of 5 or higher. The composition may include a large amount of (H) inorganic filler or the like.

A curable organopolysiloxane composition that is one component, has superior storage stability, favorable curability and adhesion at relatively low temperatures, and an appropriate usable time is provided. In particular, the composition has excellent curability even at temperatures of 80° C. or lower and excellent adhesion to resins such as polyester and polyphenylene sulfide. The composition comprises: (A) an organopolysiloxane having at least two alkenyl groups in each molecule thereof; (B) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms in a molecule; (C) a hydrosilylation reaction catalyst; (D) a condensation reaction catalyst or a condensation reaction product thereof selected from the group consisting of tetra-tert-butoxy titanium, di(isopropoxy)bis(ethyl acetoacetate)titanium, and an aluminum chelate complex; and (E) a curing inhibitor. When cured, the composition provides a silicone rubber composition with a JIS A hardness of 5 or higher. The composition may include a large amount of (H) inorganic filler or the like.