A copolymer composition that includes a silicone copolymer, methods of making the composition, and articles that include the composition, wherein the copolymer composition includes a silicone copolymer having a backbone composition that includes: silicone segments in an amount of 5 wt-% to 40 wt-%, based on the total weight of the silicone copolymer; hydrophilic segments in an amount of 40 wt-% to 75 wt-%, based on the total weight of the silicone copolymer; and reinforcing segments in an amount of 5 wt-% to 30 wt-%, based on the total weight of the silicone copolymer, wherein the reinforcing segments are derived from the reaction of one or more chain extenders with one or more multi-functional isocyanates, multi-functional carboxylic acids, multi-functional anhydrides, multi-functional esters, and/or multi-functional acid halides; wherein the silicone segments, hydrophilic segments, and reinforcing segments are connected through urea, urethane, amide, and/or oxamide linkages; wherein the hydrophilic segments and the reinforcing segments are present in a weight ratio of 1.8:1 to 8:1; and the hydrophilic segments and the silicone segments are present in a weight ratio of 1.3:1 to 4.5:1.

The invention relates to carbonate-linked surface modifying macromolecules and admixtures thereof. The admixtures can be used in industrial and medical applications where enhanced surface properties are desirable (e.g., surface properties reducing or preventing biofouling, immobilization of biomolecules, or denaturation of certain biomolecules).

Provided is a polycarbonate-polyorganosiloxane copolymer (A), including: a polycarbonate block (A-1) formed of a repeating unit having a specific structure; and a polyorganosiloxane block (A-2) containing a repeating unit having a specific structure, wherein the polycarbonate-polyorganosiloxane copolymer satisfies the following requirements (1) to (3): (1) the content of the polyorganosiloxane block (A-2) in the polycarbonate-polyorganosiloxane copolymer (A) is from more than 40 mass % to 70 mass % or less; (2) the polycarbonate-polyorganosiloxane copolymer has a viscosity-average molecular weight of from 10,000 or more to 23,000 or less; and (3) the polycarbonate-polyorganosiloxane copolymer includes a specific polycarbonate block as the polycarbonate block (A-1).

Provided is a polycarbonate-based resin composition, including: 50 mass % or more to 99 mass % or less of a polycarbonate-based resin (S) containing 0.1 mass % or more to 100 mass % or less of a polycarbonate-polyorganosiloxane copolymer (A), which contains a polycarbonate block (A-1) formed of a specific repeating unit and a polyorganosiloxane block (A-2) containing a specific repeating unit, and 0 mass % or more to 99.9 mass % or less of an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); 1 mass % or more to 50 mass % or less of a polyester-based resin (C); and 0.001 part by mass or more to 1 part by mass or less of an amide compound (D) with respect to 100 parts by mass of a total amount of the polycarbonate-based resin (S) and the polyester-based resin (C).

Provided is a molded body including a polycarbonate-polyorganosiloxane copolymer which contains a polycarbonate block (A-1) formed of a repeating unit having a specific structure and a polyorganosiloxane block (A-2) containing a repeating unit having a specific structure, and in which the content of the polyorganosiloxane block (A-2) is from 20 mass % or more to 70 mass % or less, wherein the molded body has a durometer hardness of from 25 or more to 72 or less measured with a type D durometer in conformity with JIS K 6253-3:2012.

The present disclosure relates to a polycarbonate resin composition having increased fluidity and excellent physical properties, and comprising: a first copolycarbonate comprising a repeating unit represented by Chemical Formula 1, a repeating unit represented by Chemical Formula 2, and a repeating unit represented by Chemical Formula 3 below; and a second copolycarbonate comprising a repeating unit represented by Chemical Formula 1 and a repeating unit represented by Chemical Formula 4 below, ##STR00001## ##STR00002## ##STR00003## ##STR00004##

Disclosed is a moisture curable silane modified terpolymer comprising a polyether segment, a segment of polytetrahydrofuran or polycarbonate, a polysiloxane segment and terminal amino silane groups joined to the terpolymer via urethane linkages and wherein the polyether segment comprises at least 70% by weight based on the total weight of the silane modified terpolymer. Also disclosed is a method of forming moisture curable silane modified terpolymer.

Provided is a method of producing a polycarbonate-polyorganosiloxane copolymer, including a step (a) of producing a polycarbonate oligomer with an alkaline aqueous solution of a dihydric phenol, phosgene, and an organic solvent, the method further including a step of setting a content of a polycarbonate-polyorganosiloxane copolymer in the organic solvent to be introduced into the step (a) to less than 850 ppm by mass.

The present invention provides silicon-based polycarbonates, processes for their preparation and their use in the synthesis of copolymers, in particular segmented copolymers such as polyurethanes for biomedical applications.

The present invention relates to a polysiloxane-polycarbonate copolymer having improved transparency and flame retardancy, and a method for producing the same. More specifically, the present invention relates to a polysiloxane having a specific structure having a side chain containing a randomly substituted hydroxyphenyl group, a polysiloxane-polycarbonate copolymer having the polysiloxane and a polycarbonate block as repeating units, exhibiting excellent flame retardancy and also excellent transparency, and a method for producing the same.