Patent
Hindered phenolic oxamide compounds and stabilized compositions
| العنوان: | Hindered phenolic oxamide compounds and stabilized compositions |
|---|---|
| Patent Number: | 4,645,853 |
| تاريخ النشر: | February 24, 1987 |
| Appl. No: | 06/771,496 |
| Application Filed: | August 30, 1985 |
| مستخلص: | Novel hindered phenolic compounds derived from oxamides are disclosed which are useful as stabilizers of synthetic polymer resins. |
| Inventors: | Stephen, John F. (West Chester, PA); Smith, Jerry H. (Wilmington, DE); Meshreki, Makram H. (Wilmington, DE) |
| Assignees: | ICI Americas Inc. (Wilmington, DE) |
| Claim: | What is claimed is |
| Claim: | 1. A hindered phenolic compound derived from an oxamide and having the general formula: ##STR2## wherein R.sup.1 and R.sup.2 are independently H or an alkyl group of from 1-8 carbon atoms with the proviso that when R.sup.1 is H, R.sup.2 is alkyl, and R.sup.3 is a divalent hydrocarbon radical containing from 1-12 carbon atoms. |
| Claim: | 2. A compound of claim 1 wherein R.sup.1 and R.sup.2 are selected from the group consisting of methyl, ethyl, isopropyl, sec-butyl and tert-butyl. |
| Claim: | 3. A compound of claim 2 wherein R.sup.3 is an alkylene radical having 2-5 carbon atoms. |
| Claim: | 4. A compound of claim 2 which is 3,3-bis(3,5-di-tert-butyl-4-hydroxyphenyl) butanoic acid, N,N'-bis(2-hydroxyethyl) oxamide diester. |
| Claim: | 5. A compound of claim 2 which is 3,3-bis(3,5-di-tert-butyl-4-hydroxyphenyl) butanoic acid, N,N'-bis(3-hydroxypropyl) oxamide diester. |
| Claim: | 6. A compound of claim 2 which is 3,3-bis(3,5-di-tert-butyl-4-hydroxyphenyl) butanoic acid, N,N'-bis(1,1-dimethyl-2-hydroxyethyl) oxamide diester. |
| Claim: | 7. A compound of claim 2 which is 3,3-bis(3,5-di-tert-butyl-4-hydroxyphenyl) butanoic acid, N,N'-bis(5-hydroxypentyl) oxamide diester. |
| Claim: | 8. A compound of claim 2 which is 3,3-bis(3,5-di-tert-butyl-4-hydroxyphenyl) butanoic acid, N,N'-bis(2-methyl-2-hydroxyethyl) oxamide diester. |
| Claim: | 9. A compound of claim 2 which is 3,3-bis(3,5-di-tert-butyl-4-hydroxyphenyl) butanoic acid, N,N'-bis(2-hydroxyphenyl) oxamide diester. |
| Claim: | 10. A composition comprising a polymerized ethylenically unsaturated monomer and 0.005-5% by weight of a compound of claim 1. |
| Claim: | 11. A composition of claim 10 comprising a resin selected from the group consisting of polyethylene, polypropylene and polystyrene. |
| Claim: | 12. A composition of claim 10 comprising a resin in contact with a heavy metal. |
| Claim: | 13. A composition of claim 12 in which the metal is copper. |
| Claim: | 14. A composition of claim 10 further comprising a co-stabilizer compound selected from the group consisting of dilauryl-.beta.-thiodipropionate, distearyl-.beta.-thiodipropionate, distearyl pentaerythritol diphosphite, pentaerythritol tetrakis(3-(dodecylthio) propionate), tris(2,4-di-tert-butylphenyl)phosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, and tetrakis (2,4-di-tert-butylphenyl)-4, 4'-biphenylene diphosphonite. |
| Claim: | 15. A composition of claim 12 further comprising a hindered phenolic co-stabilizer. |
| Current U.S. Class: | 560/58; 524/219 |
| Current International Class: | C07C 6976; C08K 520 |
| Patent References Cited: | 2399736 May 1946 Holmes 2784141 March 1957 Jacobsen 3198825 August 1965 Zeile et al. 3529982 September 1970 Luethin 3626008 December 1971 Biland 3906033 September 1975 Biland et al. 3979360 September 1976 Spivack 4145556 March 1979 Hirsch et al. 4145723 May 1979 Hirsch et al. 4304714 December 1981 Wheeler et al. |
| Primary Examiner: | Killos, Paul J. |
| Attorney, Agent or Firm: | Rowe, Richard A. |
| رقم الانضمام: | edspgr.04645853 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |