Polyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and moderate glass transition temperature and articles made therefrom
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08G-063/199
B29C-049/00
B65D-001/02
B29K-067/00
B29L-031/00
B29K-105/00
출원번호
US-0450278
(2017-03-06)
등록번호
US-10017606
(2018-07-10)
발명자
/ 주소
Crawford, Emmett Dudley
Pecorini, Thomas Joseph
McWilliams, Douglas Stephens
Porter, David Scott
Connell, Gary Wayne
Germroth, Ted Calvin
Barton, Benjamin Fredrick
Shackelford, Damon Bryan
출원인 / 주소
Eastman Chemical Company
대리인 / 주소
Morriss, Robert C.
인용정보
피인용 횟수 :
0인용 특허 :
249
초록▼
A molded article comprising at least one polyester which comprises: (a) a dicarboxylic acid component comprising: i) 95 to 99.99 mole % of terephthalic acid residues; and ii) 0.01 to 5 mole % of isophthalic acid; and (b) a glycol component comprising: i) 5 to 15 mole % of 2,2,4,4-tetramethyl-1,3-cyc
A molded article comprising at least one polyester which comprises: (a) a dicarboxylic acid component comprising: i) 95 to 99.99 mole % of terephthalic acid residues; and ii) 0.01 to 5 mole % of isophthalic acid; and (b) a glycol component comprising: i) 5 to 15 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; ii) 85 to 95 mole % of 1,4-cyclohexanedimethanol residues; and iii) 5 mole % or less of modifying glycols which are not 2,2,4,4-tetramethyl-1,3-cyclobutanediol or cyclohexanedimethanol, wherein the polyester has an inherent viscosity from 0.80 to 1.0 dL/g and a glass transition temperature (Tg) of 90 to 110° C., and wherein the molded article does not contain polycarbonate.
대표청구항▼
1. A molded article comprising polyester, wherein the polyester comprises: (a) a dicarboxylic acid component comprising: i) 95 to 99.99 mole % of terephthalic acid residues; andii) 0.01 to 5 mole % of isophthalic acid residues; and(b) a glycol component comprising: i) 5 to 15 mole % of 2,2,4,4-tetra
1. A molded article comprising polyester, wherein the polyester comprises: (a) a dicarboxylic acid component comprising: i) 95 to 99.99 mole % of terephthalic acid residues; andii) 0.01 to 5 mole % of isophthalic acid residues; and(b) a glycol component comprising: i) 5 to 15 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues;ii) 85 to 95 mole % of 1,4-cyclohexanedimethanol residues; andiii) 5 mole % or less of modifying glycols which are not 2,2,4,4-tetramethyl-1,3-cyclobutanediol or cyclohexanedimethanol,wherein the total mole % of the dicarboxylic acid component is 100 mole %, and the total mole % of the glycol component is 100 mole %;wherein the inherent viscosity of said polyester is from 0.80 to 1 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.;wherein said polyester has a Tg of 90 to 110° C.; andwherein the molded article does not contain polycarbonate. 2. The molded article according to claim 1, wherein the glycol component of the polyester comprises 5 to 10 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, 90 to 95 mole % 1,4-cyclohexanedimethanol residues, and 5 mole % or less of modifying glycols which are not 2,2,4,4-tetramethyl-1,3-cyclobutanediol or cyclohexanedimethanol. 3. The molded article according to claim 1, wherein the polyester has an inherent viscosity from 0.80 to 0.95 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C. 4. The molded article according to claim 1, wherein the polyester has a Tg of 95 to 105° C. 5. The molded article according to claim 1, wherein the 2,2,4,4tetramethyl-1,3-cyclobutanediol residues are a mixture comprising greater than 50 mole % of cis-2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and less than 50 mole % of trans-2,2,4,4tetramethyl-1,3-cyclobutanediol residues. 6. The molded article according to claim 1, wherein the 2,2,4,4tetramethyl-1,3-cyclobutanediol residues are a mixture comprising from 30 to 70 mole % of cis-2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and from 70 to 30 mole % of trans-2,2,4,4tetramethyl-1,3-cyclobutanediol residues. 7. The molded article according to claim 1, wherein said 2,2,4,4tetramethyl-1,3-cyclobutanediol residues are a mixture comprising from 40 to 60 mole % of cis-2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and from 60 to 40 mole % of trans-2,2,4,4tetramethyl-1,3-cyclobutanediol residues. 8. The molded article according to claim 1, wherein the molded article is a food storage container. 9. The molded article according to claim 8, wherein the food storage container is a beverage container. 10. The molded article according to claim 9, wherein the beverage container is a carbonated softdrink container. 11. The molded article according to claim 1, wherein the molded article is an injection stretch blow molded article. 12. The molded article according to claim 1, wherein said polyester has a melt viscosity of less than 10,000 poise as measured a 1 radian/second on a rotary melt rheometer at 290° C. 13. The molded article according to claim 12, wherein said polyester has a notched Izod impact strength of at least 3 ft-lbs/in at 23° C. according to ASTM D256 with a 10-mil notch in a ⅛-inch thick bar. 14. The molded article according to claim 13, wherein said polyester has a notched Izod impact strength of at least 7.5 ft-lbs/in at 23° C. according to ASTM D256 with a 10-mil notch in a ⅛-inch thick bar.
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