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  • [专利] Method for producing polybutylene terephthalate
    (SG11201408099V) (i2) mwu ft iz s-5 iv x m £ titz s issaj n d9) mm IHMMi _ (4Vi H||B^|fl n 2013# 12 fll2 0(12.12.2013) w , PO |pCT (10) WO 2013/183590 A1 (51) C()H(, 63/78 (2006.01) C08G 63/183 (2006.01) (21) (22) (25) g&fflgia)] (26) HI®4>§f]CDl (30) (71) (72) r=£. I DP • C12P 7/18 (2006.01) PCT/JP2013/065365 2013 ^6^ 3 0(03.06.2013) 0*lg •§E. i OP • V—£: 4#Jg| 2012-128064 2012 ^ 6 ^ 5 0(05.06.2012) JP tfjJSIA: (MITSUBISHI CHEM­ ICAL CORPORATION) [JP/JP]; T 1008251 ft EEI E 1^1 — \"T @ 1 S 1 Tokyo (JP). V x / 7f -f • -<>=l — /K U l' \"T y K (GENOMAT- ICA, INC.) [US/US]; 92121 U 17 ir )\s — T #1 > 7-VXZf, — — 'J >7 V V— 5>Jls 1 0 5 2 0 California (US). 3§0J;g: S(UTSUNOMIYA Masaru); T 1008251 — Tl 1S1^ — Tokyo (JP). #)§ TMi(lZA- WAYusuke); T5108530 - SRE3 0 rfirfT|C#|$HT 1 #±fe Mie(JP). /hS (5fP (KONISHI Norikazu); T 5108530 - SR E3 0 TfTrfT^ £|5Bn#±fe Mie(jp).I&m K —lP(MATSUZONO Shinichiro); T 5108530 —M. »ra0rfirfi^Br_1 #ite Mie (JP). tp^ PifT(SUZUKI Takayuki); T 5108530 HS!fteg0mmic^B:i #±fc ttfa Mie(JP). 5 X,/l/(JAPS Michael); 92121 ± U 7 ir )l — T #1 +J- > \"T -f X zf , Vf — — fi 'J V V^-<7>/H 0 5 2:0, vx T7 Rfa California (US). /*—•£? \"7 — (BURK Mark); 92121 ± U 7^;u-7!N1-y->7 -rxd f , I ^3d— ^ — U ry Vf-^U 05 20, i/x/\"7x-r * • -< >=l — TKUI' 7\" -7 Kfa California (US). —<7 ^ — U XCI ARK Warren); 77566 #| U 1'<7VA'<7V>, <7 P^XX h— 'J— h 3 O 2 Texas (US). (74) ftHA: ilea Spf, $1-(HAMAI)A Yuriko el a 1 .); T 1050003 T I7S1 3 JS/PH-X h tf^ux-r >?' 1 o® ¥HFJT Tokyo (JP). (8i) Jt^ia (^ro&i^PBy, IS ^ pj f I): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, [&£%] — (54) Title: PRODUCTION METHOD FOR POLYBUTYLENE TEREPHTHALATE = (54) |: *°'J UT U- jjg «] CO AA o 0\ m oo i-H cn i-H o CJ O TT- — • \"Ef'fbii1,4-BG DO P 50 100 150 200 250 1,4-BG cf <0 GBLg^SCwtppm ) BB AA PBT color tone (b value) BB GBL content in 1,4-BG (wt ppm) CC Nitrogen atom-containing biomethod 1 DD Petrochemical method 1,4-BG 4-BG (57) Abstract: The purpose of the present in­ vention is to provide a production method for polybutylene terephthalate (PBT) having good color tones, said method using a biological re- source-derived 1, 4-butanediol (BG). This pro­ duction method for PBT has: a step in which a dicarboxylic acid component and a diol com­ ponent including raw a material 1, 4-BG hav­ ing nitrogen a atom content of 0.01-50 ppm by mass are esterized or transesterified; and a polycondensation step in which PBT is ob­ tained from the reaction product. The gam- ma-butyrolactone content in the raw material 1, 4-BG 1-100 is ppm by mass. £*r*\"3PBT0>i![ii£&-efcoT\ flul olip pm-efc-5 B P TCDiiii (57)^: 1 , 4 — — ffll fl/7$l/-h (PBT 5 Olip pm©Ifi1 ;UJ ^bPBT jsasa*© (BG) ^ U T U > ) tt&o * o. o 1 ~ , 4-BG liiXr;!/ -€\"CDJ5.)S^ jy. ft X fM
  • [专利] Process for making polybutylene terephthalate oligomers
    (WO201625687) Disclosed is a process for making oligomers of polybutylene terephthalate (PBT) with desirable intrinsic viscosity and carboxylic end group concentrations. The PBT oligomers are used in a continuous process for making polybutylene terephthalate (PBT) resin.
  • [专利] Production method for polybutylene terephthalate
    (WO2013183590) The purpose of the present invention is to provide a production method for polybutylene terephthalate (PBT) having good color tones, said method using a biological resource-derived 1, 4-butanediol (BG). This production method for PBT has: a step in which a dicarboxylic acid component and a diol component including a raw material 1, 4-BG having a nitrogen atom content of 0.01-50 ppm by mass are esterized or transesterified; and a polycondensation step in which PBT is obtained from the reaction product. The gamma-butyrolactone content in the raw material 1, 4-BG is 1-100 ppm by mass.
  • [专利] Continuous process for making polybutylene terephthalate using purified terephthalic acid and 1,4-butane diol
    (WO2016120429) Disclosed is a continuous process and device for making polybutylene terephthalate (PBT) resin, particularly high molecular weight PBT resin. Also disclosed are a device for conducting the process, and a monitoring process for determining the carboxylic acid end group concentration of the resulting PBT.
  • [专利] Process for making polybutylene terephthalate oligomers
    (EP3194467) Disclosed is a process for making oligomers of polybutylene terephthalate (PBT) with desirable intrinsic viscosity and carboxylic end group concentrations. The PBT oligomers are used in a continuous process for making polybutylene terephthalate (PBT) resin. (From WO2016025687 A1)
  • [专利] Production method for polybutylene terephthalate
    (EP2857435) The present invention aims to provide a method for producing polybutylene terephthalate (PBT) with an excellent color using biomass-derived 1,4-butanediol (BG). The invention relates to a method for producing PBT comprising a step of subjecting a diol component containing raw material 1,4-BG having a nitrogen content of 0.01 to 50 ppm by mass and a dicarboxylic acid component to esterification or ester-exchange reaction, and a polycondensation reaction step for obtaining PBT from the reactant, wherein the content of gamma butyrolactone in the raw material 1,4-BG is 1 to 100 ppm by mass.
  • [专利] Process for making polybutylene terephthalate with high molecular weight and high carboxylic end group concentration
    (WO2016202615) Disclosed are improved processes for making high molecular weight polybutylene terephthalate resin. The PBT resin has a number average molecular weight of 30000 and 55000 g/mol, an IV of between 1.10 and 1.25 dl/g and a carboxylic acid end group concentration of between 35 and 70 mmol/kg. The PBT resin is prepared from PBT oligomers having an intrinsic viscosity of between 0.10 and 0.13 dl/g and a CEG of between 80 and 110 mmol/kg. The oligomers are prepared from purified terephthalic acid and 1,4-butane diol in the presence of a catalyst.
  • [专利] Method for producing polybutylene terephthalate
    (CA2875771) The purpose of the present invention is to provide a production method for polybutylene terephthalate (PBT) having good color tones, said method using a biological resource-derived 1, 4-butanediol (BG). This production method for PBT has: a step in which a dicarboxylic acid component and a diol component including a raw material 1, 4-BG having a nitrogen atom content of 0.01-50 ppm by mass are esterized or transesterified; and a polycondensation step in which PBT is obtained from the reaction product. The gamma-butyrolactone content in the raw material 1, 4-BG is 1-100 ppm by mass.
  • [专利] Production method for polybutylene terephthalate
    (KR20150035770) The present invention aims to provide a method for producing polybutylene terephthalate (PBT) with an excellent color using biomass-derived 1,4-butanediol (BG). The invention relates to a method for producing PBT comprising a step of subjecting a diol component containing raw material 1,4-BG having a nitrogen content of 0.01 to 50 ppm by mass and a dicarboxylic acid component to esterification or ester-exchange reaction, and a polycondensation reaction step for obtaining PBT from the reactant, wherein the content of gamma butyrolactone in the raw material 1,4-BG is 1 to 100 ppm by mass. (From EP2857435 A1)
  • [专利] Production method for polybutylene terephthalate
    (AU2013272713) The purpose of the present invention is to provide a production method for polybutylene terephthalate (PBT) having good color tones, said method using a biological resource-derived 1, 4-butanediol (BG). This production method for PBT has: a step in which a dicarboxylic acid component and a diol component including a raw material 1, 4-BG having a nitrogen atom content of 0.01-50 ppm by mass are esterized or transesterified; and a polycondensation step in which PBT is obtained from the reaction product. The gamma-butyrolactone content in the raw material 1, 4-BG is 1-100 ppm by mass.
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