A UV-curable silicone composition is disclosed. The UV-curable silicone composition comprises: (A) an organopolysiloxane having at least two alkenyl groups and at least one aryl group in a molecule; (B) a polysiloxane block copolymer comprising: (i) a polysiloxane block and (ii) an organo block, wherein the polysiloxane block (i) is bonded to the organo block (ii) via a specific linkage, and wherein the polysiloxane block copolymer has at least two thiol groups in a molecule; (C) a photoinitiator; and (D) an inorganic filler. The composition exhibits excellent transparency even if an inorganic filler is added to improve thixotropic property.

The notched Izod impact toughness and tensile elongation of poly(lactic acid) (PLA)-homopolymers are increased by about 2 to about 4 times by blending therewith a PLA-copolymer having a difunctional flexible middle segment such as a polysiloxane or a polyether from about 0.6 wt. % to about 20 wt. %. The PLA-homopolymer-PLA-copolymer blend having a difunctional flexible polymer from about 0.5 wt. % to about 10 wt. % is thermally annealed to provide impact toughness of at least about 5 kJ/m.sup.2 and tensile elongation of greater than 12%. This exceptional improvement observed in the PLA blend is a synergistic effect of the addition of the difunctional flexible polymer of the copolymer and thermal annealing. The improvement observed in the mechanical properties with high PLA homopolymer content above about 90 to about 98 wt. % is unusual and results in an increased scope of molding and thermoforming applications. The annealed PLA-copolymers having a difunctional flexible middle segment have also been found to have improved notched Izod impact properties.

The notched Izod impact toughness and tensile elongation of poly(lactic acid) (PLA)-homopolymers are increased by about 2 to about 4 times by blending therewith a PLA-copolymer having a difunctional flexible middle segment such as a polysiloxane or a polyether from about 0.6 wt. % to about 20 wt. %. The PLA-homopolymer-PLA-copolymer blend having a difunctional flexible polymer from about 0.5 wt. % to about 10 wt. % is thermally annealed to provide impact toughness of at least about 5 kJ/m.sup.2 and tensile elongation of greater than 12%. This exceptional improvement observed in the PLA blend is a synergistic effect of the addition of the difunctional flexible polymer of the copolymer and thermal annealing. The improvement observed in the mechanical properties with high PLA homopolymer content above about 90 to about 98 wt. % is unusual and results in an increased scope of molding and thermoforming applications. The annealed PLA-copolymers having a difunctional flexible middle segment have also been found to have improved notched Izod impact properties.

A composition of the present disclosure includes an aqueous dispersion of epoxy resin particles. The epoxy resin particles include at least two 1,2-epoxide groups. The composition further includes one or more anti-adhesive agents, one or more anti-microbial agents, or a combination of one or more anti-adhesive agents and one or more anti-microbial agents.

A composition of the present disclosure includes an aqueous dispersion of epoxy resin particles. The epoxy resin particles include at least two 1,2-epoxide groups. The composition further includes one or more anti-adhesive agents, one or more anti-microbial agents, or a combination of one or more anti-adhesive agents and one or more anti-microbial agents.

The modified graphene includes a structure represented by the following formula (I), wherein the modified graphene has a ratio (g/d) of an intensity “g” of a G band to an intensity “d” of a D band of 1.0 or more in a Raman spectroscopy spectrum thereof.

Gr1-Ar1-X1-(Y1).sub.n1  (I)

in the formula (I), Gr1 represents a single-layer graphene or a multilayer graphene, Ar1 represents an arylene group having 6 to 18 carbon atoms, X1 represents a single bond, a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms, or a group obtained by substituting at least one carbon atom in a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms with at least one structure selected from the group consisting of —O—, —NH—,

##STR00001##

—CO—, —COO—, —CONH—, and an arylene group.

The modified graphene includes a structure represented by the following formula (I), wherein the modified graphene has a ratio (g/d) of an intensity “g” of a G band to an intensity “d” of a D band of 1.0 or more in a Raman spectroscopy spectrum thereof.

Gr1-Ar1-X1-(Y1).sub.n1  (I)

in the formula (I), Gr1 represents a single-layer graphene or a multilayer graphene, Ar1 represents an arylene group having 6 to 18 carbon atoms, X1 represents a single bond, a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms, or a group obtained by substituting at least one carbon atom in a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms with at least one structure selected from the group consisting of —O—, —NH—,

##STR00001##

—CO—, —COO—, —CONH—, and an arylene group.

Provided are a (poly)thiophene-(poly)siloxane block copolymer and a production method of a (poly)arylene-(poly)siloxane block copolymer, where the production method is capable of employing raw materials that are readily accessible, produces no metal salt as a by-product, and brings about a high conversion rate. The (poly)thiophene-(poly)siloxane block copolymer contains a structure represented by the following formula (1):

##STR00001## wherein each R.sup.1 independently represents a hydrogen atom, a halogen atom, a hydroxy group, a hydrocarbon group having 1 to 20 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, and a bond may be formed between two R.sup.1s; each R.sup.2 independently represents a hydrocarbon group having 1 to 20 carbon atoms; a is a number of 1 to 1,000; b is a number of 2 to 2,000; c is a number of 1 to 1,000.

Provided are a (poly)thiophene-(poly)siloxane block copolymer and a production method of a (poly)arylene-(poly)siloxane block copolymer, where the production method is capable of employing raw materials that are readily accessible, produces no metal salt as a by-product, and brings about a high conversion rate. The (poly)thiophene-(poly)siloxane block copolymer contains a structure represented by the following formula (1):

##STR00001## wherein each R.sup.1 independently represents a hydrogen atom, a halogen atom, a hydroxy group, a hydrocarbon group having 1 to 20 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, and a bond may be formed between two R.sup.1s; each R.sup.2 independently represents a hydrocarbon group having 1 to 20 carbon atoms; a is a number of 1 to 1,000; b is a number of 2 to 2,000; c is a number of 1 to 1,000.

The present invention relates to a curable petroleum resin, a preparation method therefor, and use thereof, wherein the curable petroleum resin comprises a repeating unit derived from a petroleum resin monomer, a repeating unit derived from a silane monomer and a repeating unit derived from a cyclic anhydride monomer, and wherein the curable petroleum resin is used as an additive for a reactive polyolefin-based adhesive composition to increase the adhesive strength to a polyolefin-based substrate used for various parts.