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.

Claims

31 · 5 independent · depth 3

31 granted claims

›1.independentA biomass-resource-derived polyester comprising as the main repeating units thereof a dicarboxylic acid unit and a diol unit, wherein at least one of …+15

›2.↳ 1The biomass-resource-derived polyester according to claim 1, wherein the reduced viscosity (ηsp/c) of said polyester is 1.0 or greater.d2

›3.↳ 1The biomass-resource-derived polyester according to claim 1, wherein the water content in said polyester is, in terms of a mass ratio, 1 ppm or greate…d2

›4.↳ 1The biomass-resource-derived polyester according to claim 1, wherein the YI value of said polyester is âˆ’10 or greater but not greater than 30.d2

›5.↳ 1The biomass-resource-derived polyester according to claim 1, wherein the nitrogen atom content in said polyester except for nitrogen atoms contained i…d2

›6.↳ 1The biomass-resource-derived polyester according to claim 1, wherein the sulfur atom content in the polyester is, in terms of a mass ratio, from 0.1 p…d2

›7.↳ 1The biomass-resource-derived polyester according to claim 1, which comprises at least one tri- or higher functional compound unit selected from the gr…d2+1

›9.↳ 1The biomass-resource-derived polyester according to claim 1, wherein the dicarboxylic acid unit constituting one of the main repeating units of said p…d2

›16.↳ 1multiple · 1, 10, 11A molded product obtained by molding a biomass-resource-derived polyester as claimed in any one of claim 1, 10 or 11.d2

›18.↳ 1multiple · 1, 10, 11A pellet obtained from a biomass-resource-derived polyester as claimed in any one of claim 1, 10 or 11.d2

›20.↳ 1The biomass-resource-derived polyester according to claim 1, wherein at least one of the dicarboxylic acid unit and the diol unit is obtained by ferme…d2+1

›22.↳ 1The biomass-resource-derived polyester according to claim 1, wherein at least one of the biomass-resource-derived dicarboxylic acid unit and the diol …d2

›23.↳ 1The biomass-resource-derived polyester according to claim 1, wherein the nitrogen atom content is 1 to 1000 ppm.d2

›24.↳ 1The biomass-resource-derived polyester according to claim 1, wherein the polyester has a biodegradability measured as an average weight reduction in w…d2

›10.independentA process for producing a biomass-resource-derived polyester comprising a dicarboxylic acid and diol units as main repeating units, comprising:nreacti…+2

›11.independentA process for producing a biomass-resource-derived polyester comprising a dicarboxylic acid unit and a diol unit as main repeating units, comprising:n…+2

›15.independentmultiple · 1, 10, 11A biomass-resource-derived polyester resin composition, which comprises 99.9 to 0.1 wt. % of a polyester as claimed in any one of claims 1, 10 or 11 a…+1

›25.independentA biomass-resource-derived polyester comprising as the main repeating units thereof a dicarboxylic acid unit and a diol unit, wherein at least one of …+6

›26.↳ 25The biomass-resource-derived polyester according to claim 25, wherein the water content in said polyester is, in terms of a mass ratio, 1 ppm or great…d2+1

›28.↳ 25The biomass-resource-derived polyester according to claim 25, which comprises at least one tri- or higher functional compound unit selected from the g…d2+1

›30.↳ 25The biomass-resource-derived polyester according to claim 25, wherein the dicarboxylic acid unit constituting one of the main repeating units of said …d2

›31.↳ 25A pellet obtained from the biomass-resource-derived polyester claimed in claim 25.d2

Classifications

6 codes

IPC · International Patent Classification

Section C — Chemistry; metallurgy

C12P7/48

USPC · US Patent Classification

435/145435/252.32528/272528/274525/437

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Pendency

4.8 y

1,761 days filing → grant

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Robert Jones, Jr.

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›Priority documents — 1

Type	Document	Date
related publication	US 20090171037 A1	2 Jul 2009

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