摘要:
A thermoplastic molded product including a decorative material having superior heat resistance, impact strength and flexural strength is disclosed. The thermoplastic molded product is useful for a window glass substitute, a partition, a decorative panel, a decorative film, and so on. The thermoplastic molded product comprises a copolymerized polyester resin sheet made of a copolymerized polyester resin; and at least one decorative material laminated on the copolymerized polyester resin sheet, the lamination being performed by applying heat and pressure to the copolymerized polyester resin sheet and the decorative material. The copolymerized polyester resin has an alternating structure of acid moieties which are derived from acid components and diol moieties which are derived from diol components, and the acid components comprise terephthalic acid, and the diol components comprise (i) 5˜99 mol % of 1,4-cyclohexanedimethanol and (ii) 1˜60 mol % of isosorbide with respect to the total diol components.
摘要:
Disclosed is a method for preparing a polyester resin, wherein phosphate additives are used in preparing polyester resin to improve the reactive property of the esterification reaction or transesterification, as well as the flame retardancy property and the color stability of a polyester resin. The method for preparing a polyester resin comprises the steps of: carrying out an esterification reaction and/or an ester exchange reaction of a diacid component and a diol component in a presence of phosphoric acid derivatives, wherein the diol component comprises a primary diol and isosorbide, and wherein a reaction time of the esterification reaction or the ester exchange reaction is reduced and the remaining rate of isosorbide in the main chain of the polyester resin is increased.
摘要:
A copolymerized polyester heat shrinkable film which can be used as a label, a cap seal or a direct packaging for various containers is disclosed. The copolymerized polyester heat shrinkable film is made of a copolymerized polyester resin having alternating structures of acid moieties which are derived from acid components and diol moieties which are derived from diol components, the acid components comprising terephthalic acid, and the diol components comprising isosorbide 1,4-cyclohexanedimethanol and ethylene glycol. The copolymerized polyester heat shrinkable film has a shrinkage initiation temperature of equal to or more than 60° C., and a maximum heat shrinkage ratio of less than 2% at 60 to 70° C., and a maximum heat shrinkage ratio of 50 to 90% at 90 to 100° C.
摘要:
The present invention relates to a method for preparing a polyester resin in which isosorbide is copolymerized, and more particularly, to a method for preparing a copolymerized polyester resin containing isosorbide, comprising the steps of: adding glycols containing ethylene glycol and isosorbide to terephthalic acid or dimethyl terephthalate such that the feed molar ratio of total glycols to terephthalic acid or dimethyl terephthalate is 1.05 to 3.0 to allow an esterification reaction; and polycondensing the esterification product using titanium-based compounds of copolymers of titanium dioxide and silicon dioxide, and copolymers of titanium dioxide and zirconium dioxide, as a copolymerization catalyst, and using phosphorous compounds as a stabilizer. The copolymerized polyester resin containing isosorbide prepared according to the present invention exhibits superior reactive properties and productivity, and reduces the quantity of metal used as a catalyst and improves the clarity of a polymer. Further, a high molecular weight copolymerized polyester resin can be prepared using a small amount of catalyst.
摘要:
The present invention relates to a copolymer polyester resin and a molded product using the same, and more specifically to a copolymer polyester resin that contains 10˜80 mol % of 1,4-cyclohexane dimethanol, 0.1˜50 mol % of a diol compound expressed as HO—(CH2)a—CO—(CH2)b—OH (where a and b are integers in the range 1˜5), and ethylene glycol or other diols so that the sum of its entire diol composition is 100 mol % based on dicarboxylic acid. The copolymer polyester resin of the present invention enables reduction of cycle time, improvement of product processability and prevention of PET bottle deformation during mold processing with a heat-shrinking label by complementing low temperature shrinkage, maintaining a high shrinkage rate, and reducing shrinkage stress.
摘要:
Disclosed are a copolymeric polyester resin composition having outstanding color stability (transparency) and a production method therefor. The copolymeric polyester resin composition comprises: between 95 and 99.99 percent by weight of a copolymeric polyester resin having a structure which is obtained by the copolymerization of a dicarboxylic acid component and a diol component that comprises isosorbide, and in which there is repetition of a dicarboxylic acid moiety derived from the dicarboxylic acid component and a diol moiety derived from the diol component; and between 0.01 and 5 percent by weight of an antioxidant selected from the group consisting of hindered phenol-based antioxidants, phosphite-based antioxidants, thioether-based antioxidants and mixtures thereof.
摘要:
The present invention relates to a copolymer polyester resin and a molded product using the same, and more specifically to a copolymer polyester resin that contains 10˜80 mol % of 1,4-cyclohexane dimethanol, 0.1˜50 mol % of a diol compound expressed as HO—(CH2)a—CO—(CH2)b—OH (where a and b are integers in the range 1˜5), and ethylene glycol or other diols so that the sum of its entire diol composition is 100 mol % based on dicarboxylic acid. The copolymer polyester resin of the present invention enables reduction of cycle time, improvement of product processability and prevention of PET bottle deformation during mold processing with a heat-shrinking label by complementing low temperature shrinkage, maintaining a high shrinkage rate, and reducing shrinkage stress.
摘要:
The present invention relates to a copolymer polyester resin and a molded product using the same and more specifically to a copolymer polyester resin that contains 10˜80 mol % of 1,4-cyclohexane dimethanol, 0.1˜50 mol % of a diol compound expressed as HO—R6CR7—R4R1R5—COHR2R3 (where R1 is an alkyl group with a carbon number of 0˜10, and R2˜R7 are hydrogen or an alkyl group with a carbon number of 1˜10), and ethylene glycol as the remainder so that the sum of the entire diol composition is 100 mol % based on aromatic dicarboxylic acid. The copolymer polyester resin of the present invention enables reduction of cycle time and improvement of product processability and prevention of PET bottle deformation during mold processing with a heat-shrinking label by complementing low temperature shrinkage, maintaining a high shrinkage rate, and reducing shrinkage stress.
摘要:
A method for preparing polyester copolymer containing amide link, which can reduce the phase separation of a polyester component and an amide component by improving the compatibility therebetween is disclosed. The method for preparing polyester copolymer comprises the step of polymerizing macrocyclic polyester oligomer and cyclic amide monomer. Wherein, it is preferable that the macrocyclic polyester oligomer is obtained by reacting bis(hydroxyalkyl)ester with dicarboxylic acid chloride in the presence of unhindered amine, and the bis(hydroxyalkyl)ester is obtained by. depolymerizing polyester. resin. Also, lit is preferable that the cyclic amide monomer is E-caprolactam having a cyclic structure and having 2 or more carbon atoms, and the amount of the macrocyclic polyester oligomer is 5 to 99% by weight with respect to total amount of the macrocyclic polyester oligomer and the cyclic amide monomer.
摘要:
The present invention relates to a copolymer polyester resin and a molded product using the same, and more specifically to a copolymer polyester resin that contains 10˜80 mol % of 1,4-cyclohexane dimethanol, 0.1˜50 mol % of a diol compound expressed as HO—(CH2)n—CO—(CH2)b—OH (where a and b are integers in the range 1˜5), and ethylene glycol or other diols so that the sum of its entire diol composition is 100 mol % based on dicarboxylic acid. The copolymer polyester resin of the present invention enables reduction of cycle time, improvement of product processability and prevention of PET bottle deformation during mold processing with a heat-shrinking label by complementing low temperature shrinkage, maintaining a high shrinkage rate, and reducing shrinkage stress.