Phosphorus containing compounds for reducing acetaldehyde in polyesters polymers
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08G-063/00
C08G-063/02
출원번호
UP-0611380
(2009-11-03)
등록번호
US-7799891
(2010-10-11)
발명자
/ 주소
Jernigan, Mary Therese
출원인 / 주소
Eastman Chemical Company
대리인 / 주소
Carrier, Michael K.
인용정보
피인용 횟수 :
0인용 특허 :
231
초록▼
Polyesters whose polycondensation is catalyzed by titanium-containing catalysts and which are susceptible to acetaldehyde formation during polycondensation or subsequent molding operations are prepared with low finished acetaldehyde content and reduced acetaldehyde generation by adding an ammonium o
Polyesters whose polycondensation is catalyzed by titanium-containing catalysts and which are susceptible to acetaldehyde formation during polycondensation or subsequent molding operations are prepared with low finished acetaldehyde content and reduced acetaldehyde generation by adding an ammonium or amine salt of an oxyphosphorus-acid. Polyesters, especially polyethylene terephthalate, may be produced with high inherent viscosity in reduced processing time, without the necessity of further polymerization in the solid state.
대표청구항▼
What is claimed is: 1. A method of forming a bottle preform, comprising: (i) introducing into a melt processing zone a stream comprising an amine salt of one or more of phosphorous acid and phosphoric acid and a stream comprising solid polyester particles having a residual acetaldehyde level of 10
What is claimed is: 1. A method of forming a bottle preform, comprising: (i) introducing into a melt processing zone a stream comprising an amine salt of one or more of phosphorous acid and phosphoric acid and a stream comprising solid polyester particles having a residual acetaldehyde level of 10 ppm or less, wherein the polyester is formed from terephthalic acid and ethylene glycol, and the polyester is modified with one or more modifiers in an amount less than 15 mole %; (ii) melting the particles to form a molten polyester polymer composition; and (iii) forming a bottle preform from the molten polymer composition. 2. The method of claim 1, wherein the bottle preform has a residual acetaldehyde content of 10 ppm or less. 3. The method of claim 1, wherein the bottle preform has a residual acetaldehyde content of 8 ppm or less. 4. A method comprising (i) introducing into a melt processing zone: (a) a stream of polyester particles containing a randomly dispersed amine salt of one or more of phosphorous acid and phosphoric acid, and (b) a stream comprising solid polyester particles having a residual acetaldehyde level of 10 ppm or less, wherein the solid polyester particles comprise a polyester formed from terephthalic acid and ethylene glycol that is modified with one or more modifiers in an amount less than 15 mole %; (ii) melting the particles to form a molten polyester polymer composition; and (iii) forming a bottle preform from the molten polymer composition. 5. The method of claim 4, wherein the bottle preform has a residual acetaldehyde content of 10 ppm or less. 6. The method of claim 4, wherein the bottle preform has a residual acetaldehyde content of 8 ppm or less. 7. The method of claim 1, wherein the one or more modifiers comprise one or more of phthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, diethylene glycol, triethylene glycol, 1,4-cyclohexanedimethanol, propane-1,2-diol, propane-1,3-diol, butane-1,4-diol, pentane-1,5-diol, hexane-1,6-diol, 3-methylpentane-2,4-diol, 2-methylpentane-1,4-diol, 2,2,4-trimethylpentane-1,3-diol, 2-ethylhexane-1,3-diol, 2,2-diethylpropane-1,3-diol, hexane-1,3-diol, 1,4-di(hydroxyethoxy)-benzene, 2,2-bis-(4-hydroxycyclohexyl)-propane, 2,4-dihydroxy-1,1,3,3-tetramethylcyclobutane, 2,2-bis-(3-hydroxyethoxyphenyl)-propane, 2,2-bis-(4-hydroxypropoxyphenyl)-propane, 1,2-cyclohexanediol, or 1,4-cyclohexanediol. 8. The method of claim 1, wherein the one or more modifiers comprise one or more of isophthalic acid, 1,4-cyclohexanedicarboxylic acid, diethylene glycol, triethylene glycol, 1,4-cyclohexanedimethanol, butane-1,4-diol, or 2,4-dihydroxy-1,1,3,3-tetramethylcyclobutane, 1,2-cyclohexanediol, or 1,4-cyclohexanediol. 9. The method of claim 4, wherein the one or more modifiers comprise one or more of phthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, diethylene glycol, triethylene glycol, 1,4-cyclohexanedimethanol, propane-1,2-diol, propane-1,3-diol, butane-1,4-diol, pentane-1,5-diol, hexane-1,6-diol, 3-methylpentane-2,4-diol, 2-methylpentane-1,4-diol, 2,2,4-trimethylpentane-1,3-diol, 2-ethylhexane-1,3-diol, 2,2-diethylpropane-1,3-diol, hexane-1,3-diol, 1,4-di(hydroxyethoxy)-benzene, 2,2-bis-(4-hydroxycyclohexyl)-propane, 2,4-dihydroxy-1,1,3,3-tetramethylcyclobutane, 2,2-bis-(3-hydroxyethoxyphenyl)-propane, 2,2-bis-(4-hydroxypropoxyphenyl)-propane, 1,2-cyclohexanediol, or 1,4-cyclohexanediol. 10. The method of claim 4, wherein the one or more modifiers comprise one or more of isophthalic acid, 1,4-cyclohexanedicarboxylic acid, diethylene glycol, triethylene glycol, 1,4-cyclohexanedimethanol, butane-1,4-diol, or 2,4-dihydroxy-1,1,3,3-tetramethylcyclobutane, 1,2-cyclohexanediol, or 1,4-cyclohexanediol.
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이 특허에 인용된 특허 (231)
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