Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: An aliphatic dicarboxylic acid, an aliphatic diol or a derivatives thereof and/or as succinic acid, a butane diol, or a both-hydroxy-terminated polyether having the number of carbon atoms of 4 to 1000, each of which is derived from a biomass resource and has nitrogen atoms in an amount of 0.01 to 100 ppm. Products and methods using these materials are also provided.

Abstract: An aliphatic dicarboxylic acid, an aliphatic diol or a derivatives thereof and/or as succinic acid, a butane diol, or a both-hydroxy-terminated polyether having the number of carbon atoms of 4 to 1000, each of which is derived from a biomass resource and has nitrogen atoms in an amount of 0.01 to 100 ppm. Products and methods using these materials are also provided.

Abstract: An aliphatic dicarboxylic acid, an aliphatic diol or a derivatives thereof and/or as succinic acid, a butane diol, or a both-hydroxy-terminated polyether having the number of carbon atoms of 4 to 1000, each of which is derived from a biomass resource and has nitrogen atoms in an amount of 0.01 to 100 ppm. Products and methods using these materials are also provided.

Abstract: An aliphatic dicarboxylic acid, an aliphatic diol or a derivatives thereof and/or as succinic acid, a butane diol, or a both-hydroxy-terminated polyether having the number of carbon atoms of 4 to 1000, each of which is derived from a biomass resource and has nitrogen atoms in an amount of 0.01 to 100 ppm. Products and methods using these materials are also provided.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: A method of producing an aliphatic polyester resin by continuously esterifying and melt polycondensing an aliphatic dicarboxylic acid and an aliphatic diol; and at least one aliphatic hydroxycarboxylic acid; and at least one of an aliphatic unsaturated dicarboxylic acid and cis- and trans-isomers of aliphatic unsaturated tricarboxylic acids, wherein the total amount of the at least one aliphatic hydroxycarboxylic acid and the at least one of aliphatic unsaturated dicarboxylic acid and cis- and trans-isomers of aliphatic unsaturated tricarboxylic acids is from 0.0010 to 0.50 mol % of the total amount of the aliphatic polyester resin; and the total amount of the at least one aliphatic hydroxycarboxylic acid is from 1.0 to 7.0 in terms of a molar ratio to the total amount of the at least one of aliphatic unsaturated dicarboxylic acid and cis- and trans-isomers of aliphatic unsaturated tricarboxylic acids.

Abstract: An aliphatic polyester resin having excellent moldability and its production method are provided. When the amount of specific structural units contained in an aliphatic polyester resin is adjusted to an optimum amount, an aliphatic polyester resin having sufficient melt tension at the time of molding and excellent moldability than in the past and its production method is provided.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: An aliphatic polyester resin having excellent moldability and its production method are provided. When the amount of specific structural units contained in an aliphatic polyester resin is adjusted to an optimum amount, an aliphatic polyester resin having sufficient melt tension at the time of molding and excellent moldability than in the past and its production method is provided.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.

Abstract: An aliphatic polyester resin having excellent moldability and its production method are provided. When the amount of specific structural units contained in an aliphatic polyester resin is adjusted to an optimum amount, an aliphatic polyester resin having sufficient melt tension at the time of molding and excellent moldability than in the past and its production method is provided.