Abstract: A semiconductor device includes a substrate. An active pattern is on the substrate and extends in a first horizontal direction. First to third nanosheets are sequentially stacked on the active pattern and are spaced apart from each other in a vertical direction. A gate electrode is on the active pattern and extends in a second horizontal direction. The gate electrode surrounds each of the first to third nanosheets. A source/drain region is on the active pattern on at least one side of the gate electrode. An interlayer insulating layer covers the source/drain region. A source/drain contact penetrates the interlayer insulating layer in the vertical direction and is connected to the source/drain region. At least a portion of the interlayer insulating layer is disposed between sidewalls of the source/drain contact and the source/drain region in the first horizontal direction and overlaps sidewalls of the third nanosheet along the first horizontal direction.

Abstract: The present invention relates to: a separator comprising a porous substrate, and a heat resistant porous layer on one or both surfaces of the porous substrate, wherein the heat resistant porous layer comprises a cross-linked product of a cross-linkable functional group-containing phosphate-based or phosphonate-based monomer, oligomer, or polymer; an electrochemical cell comprising the same; or a method for preparing the separator.

Abstract: The present invention relates to a polycarbonate-polysiloxane copolymer containing a polysiloxane unit. The polycarbonate-polysiloxane copolymer of the present invention includes an aliphatic terminal having a specific carbon number, thereby having excellent impact properties at low temperature, and high transparency.

Abstract: A flame retardant includes a polymer including a unit represented by Formula 1: wherein A and B are each independently a single bond, C1 to C5 alkylene, C1 to C5 alkylidene, C5 to C6 cycloalkylidene, —S— or —SO2—, provided that A and B are different from each other; R1 and R4 are each independently substituted or unsubstituted C1 to C6 alkyl, substituted or unsubstituted C6 to C20 aryl, or substituted or unsubstituted C6 to C20 aryloxy; R2, R3, R5 and R6 are each independently substituted or unsubstituted C1 to C6 alkyl, substituted or unsubstituted C3 to C6 cycloalkyl, substituted or unsubstituted C6 to C12 aryl, or halogen; a, b, c and d are each independently an integer from 0 to 4; m is an integer from 0 to 500; and n is an integer from 1 to 500. The flame retardant polyamide resin composition can have excellent flame retardancy and can maintain crystallinity.

Abstract: A phosphorous copolymer, a method for preparing the same, and a flame retardant thermoplastic resin composition including the same is disclosed. The phosphorous copolymer includes a repeat unit represented by Formula 1: wherein each A is independently a single bond, C1 to C5 alkylene, C1 to C5 alkylidene, C5 to C6 cycloalkylidene, —S—, or —SO2—; R1 and R2 are each independently substituted or unsubstituted C1 to C6 alkyl or substituted or unsubstituted C6 to C20 aryl; R3 and R4 are each independently substituted or unsubstituted C1 to C6 alkyl, substituted or unsubstituted C3 to C6 cycloalkyl, substituted or unsubstituted C6 to C12 aryl, or halogen; a and b are each independently an integer from 0 to 4; and m and n are each independently an integer from 1 to 500.

Abstract: Disclosed is a bishydroxyarylsiloxane compound. The bishydroxyarylsiloxane compound has a novel structure in which a particular moiety is introduced between siloxane blocks. Due to this structure, the physical properties of a copolymer of the bishydroxyarylsiloxane compound and a polymer can be tuned. Further disclosed is a method for preparing the bishydroxyarylsiloxane compound.

Abstract: Disclosed herein is a phosphorus compound represented by Formula 1: wherein each R is the same or different and is independently hydrogen, C1-C6 alkyl or C6-C12 aryl.

Abstract: The present invention provides a thermoplastic resin composition that can have excellent flame retardancy comprising about 100 parts by weight of a base resin including about 30 to about 100% by weight of a polycarbonate-based resin (A); and about 0.1 to about 40 parts by weight of a phosphorus-containing compound in the form of polymer (C). The thermoplastic resin composition can have excellent flame retardancy, can exhibit a balance of properties such as impact strength, heat resistance, flowability, and the like, and can be environment-friendly.

Abstract: A cross-linked polyphosphonate and a thermoplastic resin composition including the cross-linked polyphosphonate are disclosed. The composition may have excellent flame retardancy and mechanical strength and superior appearance and heat resistance.

Abstract: A polyphosphonate having an acid value of about 5.5 mg KOH/g or less and represented by Formula 1: wherein: A is a single bond, C1 to C5 alkylene, C1 to C5 alkylidene, C5 to C6 cycloalkylidene, —S— or —SO2-, R is substituted or unsubstituted C6 to C20 aryl or substituted or unsubstituted C6 to C20 aryloxy, R1 and R2 are the same or different and are each independently substituted or unsubstituted C1 to C6 alkyl, substituted or unsubstituted C3 to C6 cycloalkyl, substituted or unsubstituted C6 to C 12 aryl or halogen, a and b are the same or different and are each independently an integer from about 0 to about 4, and n is an integer from about 1 to about 500.

Abstract: Disclosed herein is a phosphorus compound represented by Formula 1: wherein each R is the same or different and is independently hydrogen, C1-C6 alkyl or C6-C12 aryl.

Abstract: Disclosed is a bishydroxyarylsiloxane compound. The bishydroxyarylsiloxane compound has a novel structure in which a particular moiety is introduced between siloxane blocks. Due to this structure, the physical properties of a copolymer of the bishydroxyarylsiloxane compound and a polymer can be tuned. Further disclosed is a method for preparing the bishydroxyarylsiloxane compound.