MX166604B - POLYMERIC COMPOSITIONS OF ETHYLENVINYL ALCOHOL, RESISTANT TO OXIDATION - Google Patents
POLYMERIC COMPOSITIONS OF ETHYLENVINYL ALCOHOL, RESISTANT TO OXIDATIONInfo
- Publication number
- MX166604B MX166604B MX2576791A MX2576791A MX166604B MX 166604 B MX166604 B MX 166604B MX 2576791 A MX2576791 A MX 2576791A MX 2576791 A MX2576791 A MX 2576791A MX 166604 B MX166604 B MX 166604B
- Authority
- MX
- Mexico
- Prior art keywords
- percent
- weight
- oxidation
- resistant
- polymeric compositions
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title 1
- 230000003647 oxidation Effects 0.000 title 1
- 238000007254 oxidation reaction Methods 0.000 title 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 abstract 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 229920001038 ethylene copolymer Polymers 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000002530 phenolic antioxidant Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 238000007127 saponification reaction Methods 0.000 abstract 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
La presente invención se refiere a una composición que exhibe una estabilidad mejorada hacia la formación oxidativa de gel a temperaturas elevadas, caracterizada porque consiste esencialmente de: a) al menos un copolímero de etileno y alrededor del 90 a alrededor del 50 por ciento por peso de moléculas de alcohol vinílico, que tiene un grado de saponificación de al menos cerca del 90 por ciento; b) alrededor de 0.01 a alrededor de 0.5 por ciento por peso de al menos una sal de metal monovalente o divalente de un ácido carboxílico alifático, que tiene de 3 a 9 átomos de carbono; y c) alrededor de 0.05 a alrededor de 0.5 por ciento por peso de al menos un antioxidante fenólico impedido.The present invention relates to a composition that exhibits improved stability towards oxidative gel formation at elevated temperatures, characterized in that it consists essentially of: a) at least one ethylene copolymer and about 90 to about 50 percent by weight of vinyl alcohol molecules, which have a degree of saponification of at least about 90 percent; b) about 0.01 to about 0.5 weight percent of at least one monovalent or divalent metal salt of an aliphatic carboxylic acid, having 3 to 9 carbon atoms; and c) about 0.05 to about 0.5 percent by weight of at least one hindered phenolic antioxidant.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/523,506 US5036464A (en) | 1989-11-24 | 1990-05-15 | Methods of detecting endoscope insertion direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX166604B true MX166604B (en) | 1993-01-20 |
Family
ID=24085315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2576791A MX166604B (en) | 1990-05-15 | 1991-05-14 | POLYMERIC COMPOSITIONS OF ETHYLENVINYL ALCOHOL, RESISTANT TO OXIDATION |
Country Status (1)
| Country | Link |
|---|---|
| MX (1) | MX166604B (en) |
-
1991
- 1991-05-14 MX MX2576791A patent/MX166604B/en unknown
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