Abstract: A biodegradable polyester is provided. The biodegradable polyester is a transesterification or esterification reaction product of a reactant (a) and a reactant (b). The reactant (a) is a modified linear saccharide oligomer. The reactant (b) is a polyester, or the reactant (b) includes a dicarboxylic acid and a diol. The modified saccharide oligomer is a reaction product of a saccharide oligomer and a modifier.

Abstract: A foam and a foaming composition are provided. The foam includes a composite material and a plurality of foam cells, wherein the foam cells are disposed in the composite material. The composite material includes a modified sulfur-containing polymer and a fluorine-containing polymer fiber, wherein a degree of orientation as defined by the ratio I110/I200 is from 1.0 to 1.3, wherein I110 is the X-ray diffraction peak intensity of (110) planes of the modified sulfur-containing polymer and I200 is the X-ray diffraction peak intensity of (200) planes of the modified sulfur-containing polymer.

Abstract: A composite material and a foam prepared from the composite material are provided. The composite material includes a network polymer, a fluorine-containing polymer fiber, and a reinforcement fiber. The polymer network is a crosslinking reaction product of a polymer and an oligomer, wherein the polymer is polyamide, polyester, polyurethane, or a combination thereof, and the oligomer is a vinyl aromatic-co-acrylate oligomer with an epoxy functional group. The oligomer has a weight percentage of 1% to 10%, based on the weight of the network polymer. The ratio of the weight of the reinforcement fiber to the total weight of the network polymer and the fluorine-containing polymer fiber is from 1:9 to 4:6.

Abstract: A biodegradable polyester and a method for preparing a biodegradable polyester are provided. The biodegradable polyester is a product of a reactant (A) and a reactant (B) via polycondensation. The reactant (A) is a product of a reactant (C) and a reactant (D) via an esterification reaction. The reactant (B) is at least one epoxy resin with a secondary hydroxyl functional group. The reactant (C) is at least one diol, and the reactant (D) is at least one dicarboxylic acid, at least one acid anhydride, or a combination thereof.

Abstract: A biodegradable material and a method for preparing a biodegradable material are provided. The biodegradable material includes a continuous phase and a dispersed phase. The continuous phase includes a polyester, and the dispersed phase includes a modified saccharide oligomer. In particular, the weight ratio of the modified saccharide oligomer to the polyester is from 3:97 to 30:70. The dispersed phase has a maximum diameter of 100 nm to 900 nm.

Abstract: A bio-resin composition, a bio-resin composite, and a bio-foam material are provided. The bio-resin composition includes a polymer matrix, a toughener, and an antistatic agent. The weight ratio of the polymer matrix to the toughener is between 90:10 and 60:40. Based on the total weight of the polymer matrix and the toughener, the content of the antistatic agent is between 1% and 10%.

Abstract: A UV LED package includes a substrate having a dam, a LED die on the substrate, a lens bonded to the substrate, an extraction layer covering a light emitting surface of the LED die, and a lens sealing layer between the lens and the dam. The extraction layer can be formed to provide a precise gap G between the lens and the light emitting diode (LED). In addition, the materials for the lens and the extraction layer can be selected, and the gap G can be precisely dimensioned, to reduce refraction and reflection, to improve radiation extraction, to reduce power radiance, and to improve the efficiency of the UV LED package.

Abstract: A method of forming a film is provided, which includes providing a sheet from a polyamide composition; and biaxial stretching of the sheet to form a film, wherein the polyamide composition includes a blend of a first polyamide and a second polyamide. The first polyamide has a repeating unit of and the second polyamide has repeating units of The second polyamide is a crystalline random copolymer. The sheet of the polyamide composition is biaxially stretched at a rate of 20 mm/sec to 100 mm/sec.

Abstract: A composite material and a foam prepared from the composite material are provided. The composite material includes a network polymer, a fluorine-containing polymer fiber, and a reinforcement fiber. The polymer network is a crosslinking reaction product of a polymer and an oligomer, wherein the polymer is polyamide, polyester, polyurethane, or a combination thereof, and the oligomer is a vinyl aromatic-co-acrylate oligomer with an epoxy functional group. The oligomer has a weight percentage of 1% to 10%, based on the weight of the network polymer. The ratio of the weight of the reinforcement fiber to the total weight of the network polymer and the fluorine-containing polymer fiber is from 1:9 to 4:6.

Abstract: A biodegradable polyester is provided. The biodegradable polyester is a transesterification or esterification reaction product of a reactant (a) and a reactant (b). The reactant (a) is a modified linear saccharide oligomer. The reactant (b) is a polyester, or the reactant (b) includes a dicarboxylic acid and a diol. The modified saccharide oligomer is a reaction product of a saccharide oligomer and a modifier.

Abstract: A UV LED package includes a substrate having a dam, a LED die on the substrate, a lens bonded to the substrate, an extraction layer covering a light emitting surface of the LED die, and a lens sealing layer between the lens and the dam. The extraction layer can be formed to provide a precise gap G between the lens and the light emitting diode (LED). In addition, the materials for the lens and the extraction layer can be selected, and the gap G can be precisely dimensioned, to reduce refraction and reflection, to improve radiation extraction, to reduce power radiance, and to improve the efficiency of the UV LED package.

Abstract: An elastomer is provided, which is a product of reacting C4-12 lactam, poly(C2-4 alkylene glycol), C4-12 diacid, and multi-ester aliphatic monomer. The C4-12 lactam and the poly(C2-4 alkylene glycol) have a weight ratio of 20:80 to 80:20. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the C4-12 diacid have a ratio of 100:0.5 to 100:10. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the multi-ester aliphatic monomer have a ratio of 100:0.01 to 100:5.

Abstract: A thermoplastic vulcanizate is provided, including 10-50 parts by weight of a nylon plastic and 50-90 parts by weight of a cross-linked acrylic rubber polymer. The cross-linked acrylic rubber polymer is dispersed in the Nylon plastic. The cross-linked acrylic rubber polymer is formed by a modified acrylic rubber polymer having a hydrolysable silane group through crosslinking in the presence of water. In the modified acrylic rubber polymer having a hydrolysable silane group, a linkage group represented by formula (I) or formula (II) is between a backbone and the hydrolysable silane group: wherein R1 is H or —OH; R2 is H, —Z?—Si(OR?)3 or C1-C10 hydrocarbon group; R3 is H or C1-C10 hydrocarbon group; Z? is a divalent bridging group; R? is individually C1-C10 hydrocarbon group. A manufacturing method of the thermoplastic vulcanizate is also provided.

Abstract: A polyester elastomer is provided, which includes a product of reacting (a) amide oligomer, (b) polyalkylene glycol, and (c) poly(alkylene arylate). (a) Amide oligomer has a chemical structure of or a combination thereof, wherein R1 is C4-8 alkylene group, R2 is C4-8 alkylene group, and each of x is independently an integer of 10 to 20. (b) Polyalkylene glycol has a chemical structure of wherein R3 is C2-10 alkylene group, and y is an integer of 20 to 30. (c) Poly(alkylene arylate) has a chemical structure of or a combination thereof, wherein Ar is R4 is C2-6 alkylene group, and z is an integer of 1 to 10.

Abstract: A thermoplastic vulcanizate is provided, including 10-50 parts by weight of a nylon plastic and 50-90 parts by weight of a cross-linked acrylic rubber polymer. The cross-linked acrylic rubber polymer is dispersed in the Nylon plastic. The cross-linked acrylic rubber polymer is formed by a modified acrylic rubber polymer having a hydrolysable silane group through crosslinking in the presence of water. In the modified acrylic rubber polymer having a hydrolysable silane group, a linkage group represented by formula (I) or formula (II) is between a backbone and the hydrolysable silane group: wherein R1 is H or —OH; R2 is H, —Z?—Si(OR?)3 or C1-C10 hydrocarbon group; R3 is H or C1-C10 hydrocarbon group; Z? is a divalent bridging group; R? is individually C1-C10 hydrocarbon group. A manufacturing method of the thermoplastic vulcanizate is also provided.

Abstract: An elastomer is provided, which is a product of reacting C4-12 lactam, poly(C2-4 alkylene glycol), C4-12 diacid, and multi-ester aliphatic monomer. The C4-12 lactam and the poly(C2-4 alkylene glycol) have a weight ratio of 20:80 to 80:20. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the C4-12 diacid have a ratio of 100:0.5 to 100:10. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the multi-ester aliphatic monomer have a ratio of 100:0.01 to 100:5.

Abstract: An elastomer is provided, which is a product of reacting C4-12 lactam, poly(C2-4 alkylene glycol), C4-12 diacid, and multi-ester aliphatic monomer. The C4-12 lactam and the poly(C2-4 alkylene glycol) have a weight ratio of 20:80 to 80:20. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the C4-12 diacid have a ratio of 100:0.5 to 100:10. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the multi-ester aliphatic monomer have a ratio of 100:0.01 to 100:5.

Abstract: A method of forming a film is provided, which includes providing a sheet from a polyamide composition; and biaxial stretching of the sheet to form a film, wherein the polyamide composition includes a blend of a first polyamide and a second polyamide. The first polyamide has a repeating unit of and the second polyamide has repeating units of The second polyamide is a crystalline random copolymer. The sheet of the polyamide composition is biaxially stretched at a rate of 20 mm/sec to 100 mm/sec.

Abstract: An elastomer is provided, which is a product of reacting C4-12 lactam, poly(C2-4 alkylene glycol), C4-12 diacid, and multi-ester aliphatic monomer. The C4-12 lactam and the poly(C2-4 alkylene glycol) have a weight ratio of 20:80 to 80:20. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the C4-12 diacid have a ratio of 100:0.5 to 100:10. The total weight of the C4-12 lactam and the poly(C2-4 alkylene glycol) and the weight of the multi-ester aliphatic monomer have a ratio of 100:0.01 to 100:5.

Abstract: A polyester elastomer is provided, which includes a product of reacting (a) amide oligomer, (b) polyalkylene glycol, and (c) poly(alkylene arylate). (a) Amide oligomer has a chemical structure of or a combination thereof, wherein R1 is C4-8 alkylene group, R2 is C4-8 alkylene group, and each of x is independently an integer of 10 to 20. (b) Polyalkylene glycol has a chemical structure of wherein R3 is C2-10 alkylene group, and y is an integer of 20 to 30. (c) Poly(alkylene arylate) has a chemical structure of or a combination thereof, wherein Ar is R4 is C2-6 alkylene group, and z is an integer of 1 to 10.