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US4021408A
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Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)]dicarboxylic acid esters
Assignee: BASF SE
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Filing: 1975-04-03
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Granted: 1977-05-03
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Expires: 1995-04-03
Abstract
Abstract New bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters which are starting materials for the manufacture of dyes, pesticides and additives for plastics, especially stabilizers for polyolefins and polyamides, and are themselves stabilizers, aging retardants or antioxidants for organic products.
Inventors
- 👤 Peter Horn
- 👤 Gernot Teege
- 👤 Werner Fliege
- 👤 Frank Weiss
- 👤 Bernd Meissner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:33
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/49; C07C205/57; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
36 words
Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters of the formula ##STR10## wherein the R 1 's are identical or different and each is hydrogen or an aliphatic radical and R 2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.
Claim 2
Dependent Claim
36 words
Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters of the formula ##STR10## wherein the R 1 's are identical or different and each is hydrogen or an aliphatic radical and R 2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.
Claim 3
Dependent Claim
19 words
Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters of the formula ##STR11## wherein R 2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.
Claim 4
Dependent Claim
19 words
Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters of the formula ##STR11## wherein R 2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.
Claim 5
Dependent Claim
2 words
Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] adipate.
Claim 6
Dependent Claim
2 words
Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] adipate.
Claim 7
Dependent Claim
2 words
Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] terephthalate.
Claim 8
Dependent Claim
2 words
Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] terephthalate.
Claim 9
Dependent Claim
46 words
A process for stabilizing plastics, wherein the stabilizers used are bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters of the formula ##STR12## wherein the R 1 's are identical or different and each is hydrogen or an aliphatic radical and R 2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.
Claim 10
Dependent Claim
46 words
A process for stabilizing plastics, wherein the stabilizers used are bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters of the formula ##STR12## wherein the R 1 's are identical or different and each is hydrogen or an aliphatic radical and R 2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.
Claim 11
Dependent Claim
52 words
A process for stabilizing polyamides against oxidative deterioration and thermal degradation, wherein the stabilizers used are bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters of the formula ##STR13## wherein the R 1 's are identical or different and each is hydrogen or an aliphatic radical and R 2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.
Claim 12
Dependent Claim
52 words
A process for stabilizing polyamides against oxidative deterioration and thermal degradation, wherein the stabilizers used are bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters of the formula ##STR13## wherein the R 1 's are identical or different and each is hydrogen or an aliphatic radical and R 2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.
Claim 13
Dependent Claim
74 words
Bis-[4-m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters of the formula ##STR14## wherein the R 1 's are identical or different and each is alkyl of 1 to 4 carbon atoms or hydrogen and R 2 is alkylene of 1 to 20 carbon atoms, cyclohexylene, aralkylene of 8 to 12 carbon atoms, naphthylene or phenylene and the above radicals may in addition be substituted by alkyl or alkoxy each of 1 to 4 carbon atoms or by nitro.
Claim 14
Dependent Claim
74 words
Bis-[4-m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters of the formula ##STR14## wherein the R 1 's are identical or different and each is alkyl of 1 to 4 carbon atoms or hydrogen and R 2 is alkylene of 1 to 20 carbon atoms, cyclohexylene, aralkylene of 8 to 12 carbon atoms, naphthylene or phenylene and the above radicals may in addition be substituted by alkyl or alkoxy each of 1 to 4 carbon atoms or by nitro.
Claim 15
Dependent Claim
77 words
A process as set forth in claim 6 wherein the R 1 's are identical or different and each is alkyl of 1 to 4 carbon atoms or hydrogen an R 2 is alkylene of 1 to 20 carbon atoms, cyclohexylene, aralkylene of 8 to 12 carbon atoms, naphthylene or phenylene and the above radicals may in addition be substituted by alkyl or alkoxy each of 1 to 4 carbon atoms or by atoms or by nitro.
Claim 16
Dependent Claim
46 words
A polyolefin composition comprising a polyolefin and a thermooxidative stabilizing amount of a compound having the formula ##STR15## wherein the R 1 's are identical or different and each is hydrogen or an aliphatic radical and R 2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.
Claim 17
Dependent Claim
46 words
A polyolefin composition comprising a polyolefin and a thermooxidative stabilizing amount of a compound having the formula ##STR15## wherein the R 1 's are identical or different and each is hydrogen or an aliphatic radical and R 2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.
Claim 18
Dependent Claim
77 words
A stabilized polyolefin molding material as set forth in claim 9 wherein the R 1 's are identical or different and each is alkyl of 1 to 4 carbon atoms or hydrogen and R 2 is alkylene of 1 to 20 carbon atoms, cyclohexylene, aralkylene of 8 to 12 carbon atoms, naphthylene or phenylene and the above radicals may in addition be substituted by alkyl or alkoxy each of 1 to 4 carbon atoms or by nitro.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |