摘要:
In various aspects, the present disclosure pertains to thermoformed webs that comprise polymer films having one or more thermoformed cavities contained therein, the polymer films comprising a polymer blend of amorphous polyethylene terephthalate (APET) and a copolyester that comprises (a) dicarboxylic acid residues (e.g., dicarboxylic acid residues that comprise terephthalic acid residues and, optionally, one or more additional dicarboxylic acid residues) and (b) diol residues (e.g., diol residues comprising ethylene glycol residues and, optionally, one or more additional diol monomer residues). Other aspects of the disclosure pertain to methods of forming such thermoformed webs, packaged products comprising such thermoformed webs, and methods of recycling such thermoformed webs.
摘要:
[Problem to be Solved] The present invention provides a polyester resin composition excellent in transparency and flexibility, high in heat resistance, undergoes the bleeding-out of an oligomer at a reduced level, and can be formed into a formed or molded article or pellets that are rarely agglutinated.[Solution] A polyester resin composition including a polyester resin, the polyester resin being made a polymerization reaction of a dicarboxylic acid component containing (a) 75 to 98 mol % of an alicyclic dicarboxylic acid and (b) 2 to 25 mol % of a dimer acid with (c) a diol component containing 75 mol % or more of an alicyclic diol. (a) The alicyclic dicarboxylic acid is preferably an alicyclic dicarboxylic acid having 5 to 30 carbon atoms. The proportion of the trans-form relative to the total amount of the trans-form and the cis-form of (a) the alicyclic dicarboxylic acid unit contained in the polyester resin composition is desirably 80% or more. (b) The dimer acid is preferably a dimer acid having 36 or 44 carbon atoms.
摘要:
The present invention relates to polyester polyols made from aromatic polyacid sources such as thermoplastic polyesters. The polyols can be made by heating a thermoplastic polyester such as virgin polyethylene terephthalate, recycled polyethylene terephthalate, or mixtures thereof, with a glycol to give a digested intermediate which is then reacted with a digestible polymer, which can be obtained from various recycle waste streams. The polyester polyols comprise a glycol-digested polyacid source and a further digestible polymer. The polyester polyols provide a sustainable alternative to petrochemical or biochemical based polyester polyols.
摘要:
Sports clothing, protective clothing, clothing for body shaping and clothing with a medical function, which clothing comprises at least one fabric comprising elastic fibers, which elastic fibers are produced from a polymer composition comprising a copolymer containing 20-80 wt. % of monomeric units of a dimerized fatty acid or a derivative thereof and further monomer units of at least one dicarboxylic acid and at least one diol.
摘要:
An object of the present invention is to provide a lubricant which has excellent lubrication performance and is able to exhibit excellent lubrication performance even when under extreme pressure conditions. The present invention relates to a complex polyester composition containing polyester obtained by condensing polyhydric alcohol having at least two hydroxyl groups, a dicarboxylic acid having 44 carbon atoms, and monohydric alcohol. Further, the present invention relates to a lubricant composition containing the complex polyester composition, and a lubricant and a production method for a complex polyester composition.
摘要:
The disclosure describes a process for making a polyester resin of defined acid value using a temperature-sensitive reaction and dipropylene glycol as a reagent.
摘要:
Polyester polyols made from thermoplastic polyesters are disclosed. The polyols can be made by heating a thermoplastic polyester such as virgin PET, recycled PET, or mixtures thereof, with a glycol to give a digested intermediate, which is then condensed with a dimer fatty acid to give the polyol. The invention includes a polyester polyol comprising recurring units of a glycol-digested thermoplastic polyester and a dimer fatty acid. The polyester polyol can also be made in a single step by reacting the thermoplastic polyester, glycol, and dimer acid under conditions effective to produce the polyol. High-recycle-content polyols having desirable properties and attributes for formulating polyurethane products, including aqueous polyurethane dispersions, can be made. The polyols provide a sustainable alternative to bio- or petrochemical-based polyols.
摘要:
An amorphous copolyester comprising the reaction product of: (a) a monomer of formula I wherein R1, R2, R3, and R5 are each independently hydrogen or a C1-3 alkyl group, a is 0-1, b is 0-4, c is 0-4 and d is 0-3, and each R4 is independently hydrogen or a C1-3 alkyl group; (b) a virgin monomer selected from terephthalic acid, a di(C1-3 alkyl) terephthalate, and combinations thereof, and (c) 1,4-cyclohexane dimethanol; wherein the residue of monomer (a) is present in an amount from 7 to less than 12 mole % of the copolyester based on moles of repeat units in the polyester; and the copolyester has a glass transition temperature of at least 107° C., an intrinsic viscosity of at least 0.7 dl/g, and a molded sample has a Notched Izod value of at least 290 J/m determined in accordance with ASTM D256.
摘要:
A decomposable polymer represented by General Formula (1): where X1 denotes a certain group; X2 denotes a certain group; R1 and R2 each independently denote a hydrogen atom, an alkyl group, an aromatic group, or an electron-withdrawing group; R3 and R4 each independently denote a hydrogen atom, an alkyl group, or an aromatic group, provide that R3, R4, or both are a hydrogen atom; R5 and R6 each independently denote a hydrogen atom, an alkyl group, or an aromatic group, provide that R5, R6, or both are a hydrogen atom; R7 and R8 each independently denote a hydrogen atom, an alkyl group, a halogen atom, or an aromatic group, provided that R7 and R8 may bond together to form a ring structure; R9 and R10 each independently denote a hydrogen atom, an alkyl group, or an aromatic group; n denotes a positive integer; and m denotes 0 or 1.
摘要翻译:由通式(1)表示的可分解聚合物:其中X1表示某一组; X2表示某一组; R 1和R 2各自独立地表示氢原子,烷基,芳族基或吸电子基团; R3和R4各自独立地表示氢原子,烷基或芳基,提供R3,R4或两者均为氢原子; R5和R6各自独立地表示氢原子,烷基或芳基,其中R5,R6或它们都是氢原子; R 7和R 8各自独立地表示氢原子,烷基,卤素原子或芳基,条件是R 7和R 8可以键合在一起形成环结构; R9和R10各自独立地表示氢原子,烷基或芳基; n表示正整数; m表示0或1。