Claims
- 1. A polyester composition comprising (A) 50 to 95% by weight of polyethylene terephthalate and (B) 50 to 5% by weight of a copolyester having an intrinsic viscosity, measured in o-chlorophenol at 25.degree. C., of 0.3 to 1.5 dl/g and being derived from dicarboxylic acid units composed of 95 to 60 mole % of isophthalic acid units and to 40 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 95 to 70 mole % of ethylene glycol units and 5 to 30 mole % of 1,3-bis-(2-hydroxyethoxy)benzene units.
- 2. A polyester composition according to claim 1 comprising (A) 70 to 90% by weight of polyethylene terephthalate and (B) 30 to 10% by weight of a copolyester having an intrinsic viscosity, measured in o-chlorophenol at 25.degree. C., of 0.6 to 1.0 dl/g and being derived from dicarboxylic acid units composed of 90 to 70 mole % of isophthalic acid units and 10 to 30 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 90 to 80 mole % of ethylene glycol units and 10 to 20 mole % of 1,3-bis(2-hydroxyethoxy)benzene units.
- 3. The polyester composition of claim 2 in which the copolyester further comprises 0.01 to 2 mole, per 100 mole of the dihydroxy compound units, of trifunctional or higher-functional polyhydroxy compound units.
- 4. The polyester composition of claim 2 in which the copolyester further comprises 0.05 to 1 mole, per 100 mole of the dihydroxy compound units, of 1,1,1-trishydroxymethylpropane units.
- 5. A film composed of a polyester composition comprising (A) 50 to 95% by weight of polyethylene terephthalate and (B) 50 to 5% by weight of a copolyester having an intrinsic viscosity, measured in o-chlorophenol at 25.degree. C., of 0.3 to 1.5 dl/g and being derived from dicarboxylic acid units composed of 95 to 60 mole % of isophthalic acid units and 5 to 40 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 95 to 70 mole % of ethylene glycol units and 5 to 30 mole % of 1,3-bis(2-hydroxyethoxy)benzene units.
- 6. A film according to claim 5 which is composed of a polyester composition comprising (A) 70 to 90% by weight of polyethylene terephthalate and (B) 30 to 10% by weight of a copolyester having an intrinsic viscosity, measured in o-chlorophenol at 25.degree. C., of 0.6 to 1.0 dl/g and being derived from dicarboxylic acid units composed of 90 to 70 mole % of isophthalic acid units and 10 to 30 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 90 to 80 mole % of ethylene glycol units and 10 to 20 mole % of 1,3-bis(2-hydroxyethoxy)benzene units.
- 7. The film of claim 6 in which the copolyester further comprises 0.01 to 2 mole, per 100 mole of the dihydroxy compound units, of trifunctional or higher-functional polyhydroxy compound units.
- 8. The film of claim 6 in which the copolyester further comprises 0.05 to 1 mole, per 100 mole of the dihydroxy compound units, of 1,1,1-trishydroxymethylpropane units.
- 9. A preform composed of a polyester composition comprising (A) 50 to 95% by weight of polyethylene terephthalate and (B) 50 to 5% by weight of a copolyester having an intrinsic viscosity, measured in o-chlorophenol at 25.degree. C., of 0.3 to 1.5 dl/g and being derived from dicarboxylic acid units composed of 95 to 60 mole % of isophthalic acid units and 5 to 40 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 95 to 70 mole % of ethylene glycol units and 5 to 30 mole % of 1,3-bis(2-hydroxyethoxy)benzene units.
- 10. A preform according to claim 9 which is composed of a polyester composition comprising (A) 70 to 90% by weight of polyethylene terephthalate and (B) 30 to 10% by weight of a copolyester having an intrinsic viscosity, measured in o-chlorophenol at 25.degree. C., of 0.6 to 1.0 dl/g and being derived from dicarboxylic acid units composed of 90 to 70 mole % of isophthalic acid units and 10 to 30 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 90 to 80 mole % of ethylene glycol units and 10 to 20 mole % of 1,3-bis(2-hydroxyethoxy)benzene units.
- 11. The preform of claim 10 in which the copolyester further comprises 0.01 to 2 mole, per 100 mole of the dihydroxy compound units, of trifunctional or higher-functional polyhydroxy compound units.
- 12. The preform of claim 10 in which the copolyester further comprises 0.05 to 1 mole, per 100 mole of the dihydroxy compound units, of 1,1,1-trishydroxymethylpropane units.
- 13. A container composed of a polyester composition comprising (A) 50 to 95% by weight of polyethylene terephthalate and (B) 50 to 5% by weight of a copolyester having an intrinsic viscosity, measured in o-chlorophenol at 25.degree. C., of 0.3 to 1.5 dl/g and being derived from dicarboxylic acid units composed of 95 to 60 mole % of isophthalic acid units and 5 to 40 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 95 to 70 mole % of ethylene glycol units and 5 to 30 mole % of 1,3-bis(2-hydroxyethoxy)benzene units.
- 14. A container according to claim 13 wherein the polyester composition comprises (A) 70 to 90% by weight of polyethylene terephthalate and (B) 30 to 10% by weight of a copolyester having an intrinsic viscosity, measured in o-chlorophenol at 25.degree. C., of 0.6 to 1.0 dl/g and being derived from dicarboxylic acid units composed of 90 to 70 mole % of isophthalic acid units and 10 to 30 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 90 to 80 mole % of ethylene glycol units and 10 to 20 mole % of 1,3-bis(2-hydroxyethoxy)benzene units.
- 15. The container of claim 14 in which the copolyester further comprises 0.01 to 2 mole, per 100 mole of the dihydroxy compound units, of trifunctional or higher-functional polyhydroxy compound units.
- 16. The container of claim 14 in which the copolyester further comprises 0.05 to 1 mole, per 100 mole of the dihydroxy compound units, of 1,1,1-trishydroxymethylpropane units.
- 17. A polyester laminated structure composed of (C) a polyalkylene terephthalate layer and (D) a copolyester layer, the copolyester layer (D) being composed of a copolyester derived from dicarboxylic acid units composed of 95 to 60 mole % of isophthalic acid units and 5 to 40 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 95 to 70 mole % of ethylene glycol units and 5 to 30 mole % of 1,3-bis(2-hydroxyethoxy)benzene units, or a copolyester composition comprising said copolyester and polyethylene terephthalate.
- 18. A polyester laminated structure according to claim 17 composed of (C) a polyalkylene terephthalate layer and (D) a copolyester layer, the copolyester layer (D) being composed of a copolyester derived from dicarboxylic acid units composed of 90 to 70 mole % of isophthalic acid units and 10 to 30 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 90 to 80 mole % of ethylene glycol units and 10 to 20 mole % of 1,3-bis(2-hydroxyethoxy)benzene units, or a copolyester composition comprising said copolyester and polyethylene terephthalate.
- 19. The polyester laminated structure of claim 18 in which the copolyester further comprises 0.01 to 2 mole, per 100 mole of the dihydroxy compound units, of trifunctional or higher-functional polyhydroxy compound units.
- 20. The polyester laminated structure of claim 18 in which the copolyester further comprises 0.05 to 1 mole, per 100 mole of the dihydroxy compound units, of 1,1,1-trishydroxymethylpropane units.
- 21. A stretched polyester laminated structure composed of (C) a polyalkylene terephthalate layer and (D) a copolyester layer composed of a copolyester derived from a dicarboxylic acid units composed of 95 to 60 mole % of isophthalic acid units and 5 to 40 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 95 to 70 mole % of ethylene glycol units and 5 to 30 mole % of 1,3-bis(2-hydroxyethoxy)benzene units or a copolyester composition comprising said copolyester and polyethylene terephthalate, said polyalkylene terephthalate layer (C) and the copolyester layer (D) being stretched.
- 22. A stretched polyester laminate structure according to claim 21 which is composed of (C) a polyethylene terephthalate layer and (D) a copolyester layer composed of a copolyester derived from dicarboxylic acid units composed of 90 to 70 mole % of isophthalic acid units and 10 to 30 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 90 to 80 mole % of ethylene glycol units and 10 to 20 mole % of 1,3-bis(2-hydroxyethoxy)benzene units or a copolyester composition comprising said copolyester and polyethylene terephthalate, said polyalkylene terephthalate layer (C) and the copolyester layer (D) being stretched.
- 23. The polyester stretched laminated structure of claim 22 in which the copolyester further comprises 0.01 to 2 mole, per 100 mole of the dihydroxy compound units, of trifunctional or higher-functional polyhydroxy compound units.
- 24. The polyester stretched laminated structure of claim 22 in which the copolyester further comprises 0.05 to 1 mole, per 100 mole of the dihydroxy compound units, of 1,1,1-trishydroxymethylpropane units.
- 25. A preform for a laminated blow-molded article, said preform being composed of (C) a polyalkylene terephthalate layer and (D) a copolyester layer, the copolyester layer (D) being composed of a copolyester derived from dicarboxylic acid units composed of 95 to 60 mole % of isophthalic acid units and 5 to 40 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 95 to 70 mole % of ethylene glycol units and 5 to 30 mole % of 1,3-bis(2-hydroxyethoxy)benzene units, or a copolyester composition comprising said copolyester and polyethylene terephthalate.
- 26. A preform for a laminated blow-molded article according to claim 25, said preform composed of (C) a polyethylene terephthalate layer and (D) a copolyester layer, the copolyester layer (D) being composed of a copolyester derived from dicarboxylic acid units composed of 90 to 70 mole % of isophthalic acid units and 10 to 30 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 90 to 80 mole % of ethylene glycol units and 10 to 20 mole % of 1,3-bis(2-hydroxyethoxy)benzene units, or a copolyester composition comprising said copolyester and polyethylene terephthalate.
- 27. The preform of claim 26 in which the copolyester further comprises 0.01 to 2 mole, per 100 mole of the dihydroxy compound units, of trifunctional or higher-functional polyhydroxy compound units.
- 28. The preform of claim 26 in which the copolyester further comprises 0.05 to 1 mole, per 100 mole of the dihydroxy compound units, of 1,1,1-trishydroxymethylpropane units.
- 29. A polyester laminated blow-molded article composed of (C) a polyalkylene terephthalate layer and (D) a copolyester layer, the copolyester layer (D) being composed of a copolyester derived from dicarboxylic acid units composed of 95 to 60 mole % of isophthalic acid units and 5 to 40 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 95 to 70 mole % of ethylene glycol units and 5 to 30 mole % of 1,3-bis(2-hydroxyethoxy)benzene units, or a copolyester composition comprising said copolyester and polyethylene terephthalate.
- 30. A polyester laminated blow-molded article according to claim 29 which is composed of (C) a polyethylene terephthalate layer and (D) a copolyester layer, the copolyester layer (D) being composed of a copolyester derived from dicarboxylic acid units composed of 90 to 70 mole % of isophthalic acid units and 10 to 30 mole % of 2,6-naphthalenedicarboxylic acid units and dihydroxy compound units composed of 90 to 80 mole % of ethylene glycol units and 10 to 20 mole % of 1,3-bis(2-hydroxyethoxy)benzene units, or a copolyester composition comprising said copolyester and polyethylene terephthalate.
- 31. The polyester laminated blow-molded article of claim 30 in which the copolyester further comprises 0.01 to 2 mole, per 100 mole of the dihydroxy compound units, of trifunctional or higher-functional polyhydroxy compund units.
- 32. The polyester laminated blow-molded article of claim 30 in which the copolyester further comprises 0.05 to 1 mole, per 100 mole of the dihydroxy compound units, of 1,1,1-trishydroxymethylpropane units.
Priority Claims (3)
Number |
Date |
Country |
Kind |
63-281800 |
Nov 1988 |
JPX |
|
63-328733 |
Dec 1988 |
JPX |
|
63-328737 |
Dec 1988 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 07/432,855, filed Nov. 9, 1989, now U.S. Pat. No. 5,039,780.
US Referenced Citations (6)
Number |
Name |
Date |
Kind |
3972852 |
Inata et al. |
Aug 1976 |
|
4060516 |
Kuratsuji et al. |
Nov 1977 |
|
4100142 |
Schaefer et al. |
Jul 1978 |
|
4390683 |
Yatsu et al. |
Jun 1983 |
|
4692506 |
Yatsu et al. |
Sep 1987 |
|
5039780 |
Hashimoto et al. |
Feb 1991 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
432855 |
Nov 1989 |
|