Claims
- 1. A phenol of the formula I ##STR5## wherein n is 1 to 4,
- R.sub.1 is hydrogen or methyl,
- R.sub.2 is hydrogen, methyl, ethyl or tert.-butyl,
- R.sub.3 is hydrogen, methyl, ethyl or tert.-butyl,
- R.sub.4 and R.sub.5 are each hydrogen,
- Y is -P(OR.sub.7)-, -P(.dbd.O)(OR.sub.7)-, -P(.dbd.O)(R.sub.7)- or -P(R.sub.7)-, wherein R.sub.7 is hydrogen, C.sub.1 -C.sub.18 -alkyl or phenyl, and
- R.sub.6 is a radical -CHR.sub.8 -CHR.sub.9 -S-CR.sub.10 R.sub.11 R.sub.12, wherein R.sub.8 is hydrogen, R.sub.9 is hydrogen or methyl, R.sub.10 is C.sub.4 -C.sub.19 -n-alkyl, and R.sub.11 and R.sub.12 are each hydrogen.
- 2. A phenol according to claim 1, wherein
- Y is -P(OR.sub.7)- or -P(.dbd.O)(OR.sub.7)-, wherein R.sub.7 is C.sub.1 -C.sub.18 -n-alkyl or phenyl, and
- R.sub.10 is C.sub.4 -C.sub.18 -n-alkyl.
- 3. A phenol according to claim 1, wherein
- r.sub.1 is methyl,
- R.sub.2 is hydrogen,
- R.sub.3 is tert.-butyl,
- Y is -P(O-phenyl),
- R.sub.6 is a radical -CH.sub.2 -CHR.sub.9 -S-CH.sub.2 R.sub.10,
- R.sub.9 is methyl, and
- R.sub.10 is C.sub.4 -C.sub.12 -n-alkyl.
- 4. A phenol according to claim 1, wherein
- R.sub.1 is methyl,
- R.sub.2 is hydrogen,
- R.sub.3 is tert.-butyl,
- R.sub.6 is -CH.sub.2 -CH(CH.sub.3)-S-(CH.sub.2).sub.9 -CH.sub.3, and
- Y is -P(O-phenyl)-.
- 5. A stabilizing polyolefin according to claim 4, wherein the polyolefin is polypropylene.
- 6. A polyolefin which contains a compound according to claim 1 in an amount sufficient to stabilize the polyolefin against oxidation.
Priority Claims (1)
Number |
Date |
Country |
Kind |
4750/76 |
Apr 1976 |
CHX |
|
Parent Case Info
This is a division of application Ser. No. 786,177, filed Apr. 11, 1977, now U.S. Pat. No. 4,148,820.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3655718 |
Schutze et al. |
Apr 1972 |
|
3662032 |
Kauder et al. |
May 1972 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
786177 |
Apr 1977 |
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