Claims
- 1. A thermoplastically processed article which comprises a vinyl alcohol copolymer comprising the following general structure: ##STR6## wherein R is hydrogen or methyl;
- R.sup.1 is hydrogen or methyl;
- R.sup.2 is hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.6 -C.sub.20 aryl or C.sub.7 -C.sub.30 alkylaryl;
- n is a number from 1-1,000; provided n is not 1 when R.sup.2 is hydrogen, methyl or ethyl;
- x is 50-99.9 mole%;
- y is 0-50 mole%; and
- z is 0.001-50 mole%.
- 2. The article of claim 1 in which R is methyl.
- 3. The article of claim 1 in which n is 3-100.
- 4. The article of claim 1 in which n is 5-50.
- 5. The article of claim 1 in which x is 75-99.5 mole%, y is 0-25 mole% and z is 0.005-25 mole%.
- 6. The article of claim 1 in which x is 85-99 mole%, y is 0-15 mole% and z is 0.005-15 mole%.
- 7. The article of claim 2 in which x is 75-99.5 mole%, y is 0-25 mole% and z is 0.005-25 mole%.
- 8. The article of claim 2 in which x is 85-99 mole%, y is 0-15 mole% and z is 0.005-15 mole%.
- 9. The article of claim 1 in which R.sup.2 is hydrogen or C.sub.1 -C.sub.5 alkyl.
- 10. A thermoplastically processed article which comprises a vinyl alcohol copolymer consisting essentially of the following general formula ##STR7## wherein R.sup.1 is hydrogen or methyl;
- R.sup.2 is hydrogen or a C.sub.1 -C.sub.20 alkyl;
- n is a number from 3-100;
- x is 75-99.5 mole%;
- y is 0-25 mole%; and
- z is 0.005-25 mole%.
- 11. The article of claim 10 in which R.sup.2 is a C.sub.4 -C.sub.12 alkyl group.
- 12. The article of claim 10 in which R.sup.1 is hydrogen.
- 13. The article of claim 10 in which R.sup.2 is hydrogen.
- 14. The article of claim 10 in which R.sup.1 and R.sup.2 are hydrogen.
- 15. The article of claim 10 in which x is 85-99 mole%, y is 0.15 mole% and z is 0.005-15 mole%.
- 16. The article of claim 10 in which n is 5-50.
- 17. A thermoplastically processed article which comprises a vinyl alcohol copolymer consisting essentially of the following general formula ##STR8## wherein R.sup.1 is hydrogen or methyl;
- R.sup.2 is hydrogen or a C.sub.4 -C.sub.12 alkyl group;
- n is a number from 5-50;
- x is 85-99 mole%;
- y is 0-15 mole%; and
- z is 0.005-15 mole%.
- 18. The article of claim 17 in which R.sup.1 is hydrogen.
- 19. The article of claim 17 in which R.sup.2 is hydrogen.
- 20. The thermoplastically processed article of claim 1 in which n is 5-50, x is 95-99, y is 0-5 and z is 0.005-3.
- 21. The thermoplastically processed article of claim 17 having a polymer layer comprising a vinyl alcohol copolymer in which x is 95-99, y is 0-5 and z is 0.005-3.
- 22. The article of claim 20 which has an oxygen transmission at 90% relative humidity of less than about 4 cc/100 in.sup.2 /day/mil atm.
- 23. The article of claim 21 which has an oxygen transmission at 90% relative humidity of less than about 4 cc/100 in.sup.2 /day/mil atm.
Parent Case Info
This is a division of application Ser. No. 727,638, filed Apr. 26, 1985, now U.S. Pat. No. 4,618,648.
US Referenced Citations (16)
Foreign Referenced Citations (5)
Number |
Date |
Country |
46-129489 |
Aug 1971 |
JPX |
0206607 |
Dec 1983 |
JPX |
0155408 |
Sep 1984 |
JPX |
0155411 |
Sep 1984 |
JPX |
922459 |
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GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
727638 |
Apr 1985 |
|