KR960010716A - Aliphatic Copolyester and Blown Film Made Using the Same - Google Patents

Abstract

The present invention relates to a novel aliphatic copolyester and a blown film prepared using the same. More specifically, the acid residues are composed of 95 to 70 mol% of succinic acid and 5 to 30 mol% of adipic acid. The diol residue may be a compound consisting of 5 to 40 mol% of 1,6-hexanediol residues and 95 to 60 mol% of 1,4-butanediol residues or 1,6-hexanediol residues alone, When the compound residue having an acid residue is an alcohol residue with respect to the residue of the acid component is a novel aliphatic copolymer polyester having an intrinsic viscosity of 1.0 to 1 mol% relative to the diol residue is 1.0 or more, and excellent melt strength and A blown film (blown-film) prepared by melting, extruding and stretching through a raw hollow die.

Description

Aliphatic Copolyester and Blown Film Made Using the Same

Since this is an open matter, no full text was included.

Claims (10)

Acid component residues consisting of succinic acid compound residues and adipic acid residues, mixed 1,6-hexanediol residues and 1,4-butanediol residues, or diol residues consisting of 1,6-hexanediol residues alone and polyfunctional or more than three functional groups An aliphatic copolymer having an intrinsic viscosity of at least 1.0, characterized in that it consists of a functional compound residue. The aliphatic copolymer polyester of claim 1 wherein the succinic acid compound residues are selected from succinic acid, succinic anhydride compounds, or succinic acid ester compound residues. The aliphatic copolymer polyester according to claim 2, wherein the acid component residues are composed of 95 to 70 mol% of succinic acid compound residues and 5 to 30 mol% of adipic acid residues. The method of claim 1, wherein the mixture of 1,6-hexanediol residues and 1,4-butanediol residues comprises 5-40 mol% of 1,6-hexanediol residues and 95-60 mol% of 1,4-butanediol residues. An aliphatic copolyester characterized by the above. The aliphatic copolymer polyester according to claim 1, wherein the polyfunctional compound residue is composed of 0.01 to 1 mol% relative to the acid component in the case of an acid residue and diol residue in the case of an alcohol residue. The aliphatic copolyester according to claim 1, wherein the trifunctional or higher trifunctional compound residue is a trimellitic acid residue. The aliphatic copolymer polyester according to claim 1, wherein the trifunctional or higher trifunctional compound residue is a trimethylolpropane residue. The aliphatic copolyester according to claim 1, wherein the trifunctional or higher trifunctional compound residue is a trimethylolethane residue. The aliphatic copolymer polyester according to claim 1, wherein the trifunctional or higher trifunctional compound residue is a glycerin residue. A blow film, which is prepared by melting, extruding and stretching the aliphatic copolyester according to claim 1 in an upward or downward direction through a circular hollow die. ※ Note: The disclosure is based on the initial application.