Abstract: A polyester sheet includes at least one modified layer made from a polyester composition including a polyester, a polyester-polyether copolymer, a slip agent which has a solubility parameter ranging from 17 MPa1/2 to 22 MPa1/2, and an anti-blocking agent. Based on 100 parts by weight of the polyester, the polyester-polyether copolymer is present in an amount ranging from 0.5 part by weight to 5 parts by weight, the slip agent is present in an amount ranging from 0.02 part by weight to 0.5 part by weight, and the anti-blocking agent is present in an amount ranging from 0.05 part by weight to 0.6 part by weight.

Abstract: A polyester composition includes a polyester, a copolyester-ether, a styrene-butadiene copolymer, and a catalyst. The styrene-butadiene copolymer includes a butadiene monomer unit which is in an amount ranging from 12 wt % to 50 wt % based on a total weight of the styrene-butadiene copolymer. The styrene-butadiene copolymer is in an amount ranging from 0.2 to 4 parts by weight based on 100 parts by weight of the polyester.

Abstract: The present disclosure provides a low gloss sheet and a matte product prepared therefrom. The low gloss sheet includes a substrate and a low gloss layer disposed thereon. The low gloss layer includes polyester and a matting agent. A weight percentage of the matting agent is 4 wt % to 10 wt % based on the total weight of the low gloss layer. The matting agent includes a plurality of first particles and a plurality of second particles. An average particle diameter (d50) of the first particles and the second particles is 8 to 10 ?m and 3 to 6 ?m respectively. An oil absorption of the second particles is 30 to 100 ml/100 g. The matte product is prepared from the low gloss sheet by a forming technique.

Abstract: A polyester composition with gas barrier properties, including polyester polymerized by glycol and dicarboxylic acid, gas barrier enhancing additives, and antioxidants, wherein the gas barrier enhancing additive includes compounds with following chemical formula:

Abstract: A transparent impact resistant polyester composition is disclosed. The polyester composition comprises 100 parts by weight of polyester, and 0.1 to 6.0 parts by weight of styrene butadiene block copolymer, wherein a molecular weight of the styrene butadiene block copolymer is in the range from 100,000 to 200,000, and an intrinsic viscosity of the styrene butadiene block copolymer is in the range from 0.1 to 0.6.

Abstract: A matte sheet includes a substrate and a matte coating layer. The matte coating layer is formed on the substrate. The matte coating layer has an average thickness ranging from 2.5 ?m to 6 ?m and is made from a coating composition that includes a matting agent. The matte coating layer satisfies an inequality formula of 5<d50/Ra?11. D50 stands for a particle size distribution of the matting agent and Ra stands for a roughness of the matte coating layer. The matte product made from the matte sheet is also provided.

Abstract: A down-proof fabric includes a base fabric, an adhesive layer disposed on the base fabric, and at least one down-proof functional layer disposed on the adhesive layer. The down-proof functional layer includes a plurality of voids to block the penetration of the down. The present disclosure improves the drawbacks of conventional down-proof techniques and provides a light, thin, and breathable down-proof fabric with good hand feeling.

Abstract: Disclosed are processes for synthesizing polyimides by a sequential self-repetitive reaction between poly (aryl carbodiimide) (p-CDI) or aryl diisocyanates with dianhydrides.

Abstract: Disclosed are processes for synthesizing polyimides by a sequential self-repetitive reaction between poly (aryl carbodiimide) (p-CDI) or aryl diisocyanates with dianhydrides.

Abstract: Disclosed is a process for synthesizing an aryl N-acylurea in both high selectivity and high yield, comprising reacting an aryl carbodiimide with a carboxylic acid under mild conditions. Thermolysis of N-acylureas at above about 120° C. gives amides and isocyanates, and the latter will undergo the repetitive reaction sequences in the presence of a carbodiimide catalyst. Based on this unique model, a sequential self-repetitive reaction (SSRR) is also developed in a versatile manner for converting aryl carbodiimides into amides, polyamides, polyamide-imides and polyamide-imide elastomers.