US4385143A
Expired / Lapsed
US
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Stabilizer for synthetic resins
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1981-08-31
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Granted: 1983-05-24
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Expires: 2001-08-31
Abstract
Abstract Synthetic resins, particularly polyolefins, are markedly improved in their resistances to heat and oxidation by the incorporation of a 2-methyl-4-t-butyl-5-hydroxyphenylalkanoic acid ester alone or in combination with a thioether-type antioxidant represented by the general formula <IMAGE> wherein R represents an alkyl group of 12 to 20 carbon atoms, or by the general formula <IMAGE> wherein R represents an alkyl group of 4 to 20 carbon atoms.
Inventors
- 👤 Shinichi Yachigo
- 👤 Yuko Takahashi
- 👤 Tsutomu Mitsuda
- 👤 Mitsuhisa Nakatani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:09
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/34; C07C; C07C59/00; C07C59/40; C07C59/42; C07C59/52; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134; C08K5/1345; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
65 words
A compound represented by the general formula (I) ##STR23## wherein A represents an alkylene group having 1 to 4 carbon atoms and n is an integer of 1, 3 or 4; when n=1, R represents an alkyl group having 1 to 20 carbon atoms; when n=3, R represents a group of the formula ##STR24## and when n=4, R represents a group of the formula ##STR25##
Claim 2
Dependent Claim
65 words
A compound represented by the general formula (I) ##STR23## wherein A represents an alkylene group having 1 to 4 carbon atoms and n is an integer of 1, 3 or 4; when n=1, R represents an alkyl group having 1 to 20 carbon atoms; when n=3, R represents a group of the formula ##STR24## and when n=4, R represents a group of the formula ##STR25##
Claim 3
Dependent Claim
7 words
A compound represented by the formula ##STR26##
Claim 4
Dependent Claim
7 words
A compound represented by the formula ##STR26##
Claim 5
Dependent Claim
7 words
A compound represented by the formula ##STR27##
Claim 6
Dependent Claim
7 words
A compound represented by the formula ##STR27##
Claim 7
Dependent Claim
7 words
A compound represented by the formula ##STR28##
Claim 8
Dependent Claim
7 words
A compound represented by the formula ##STR28##
Claim 9
Dependent Claim
7 words
A compound represented by the formula ##STR29##
Claim 10
Dependent Claim
7 words
A compound represented by the formula ##STR29##
Claim 11
Dependent Claim
7 words
A compound represented by the formula ##STR30##
Claim 12
Dependent Claim
7 words
A compound represented by the formula ##STR30##
Claim 13
Dependent Claim
7 words
A compound represented by the formula ##STR31##
Claim 14
Dependent Claim
7 words
A compound represented by the formula ##STR31##
Claim 15
Dependent Claim
7 words
A compound represented by the formula ##STR32##
Claim 16
Dependent Claim
7 words
A compound represented by the formula ##STR32##
Claim 17
Dependent Claim
7 words
A compound represented by the formula ##STR33##
Claim 18
Dependent Claim
7 words
A compound represented by the formula ##STR33##
Claim 19
Dependent Claim
7 words
A compound represented by the formula ##STR34##
Claim 20
Dependent Claim
7 words
A compound represented by the formula ##STR34##
Claim 21
Dependent Claim
77 words
A stabilized synthetic resin composition comprising a synthetic resin and, incorporated therein, a compound represented by the general formula (I) ##STR35## wherein A represents an alkylene group having 1 to 4 carbon atoms and n is an integer of 1, 3 or 4; when n=1, R represents an alkyl group having 1 to 20 carbon atoms; when n=3, R represents a group of the formula ##STR36## and when n=4, R represents a group of the formula ##STR37##
Claim 22
Dependent Claim
77 words
A stabilized synthetic resin composition comprising a synthetic resin and, incorporated therein, a compound represented by the general formula (I) ##STR35## wherein A represents an alkylene group having 1 to 4 carbon atoms and n is an integer of 1, 3 or 4; when n=1, R represents an alkyl group having 1 to 20 carbon atoms; when n=3, R represents a group of the formula ##STR36## and when n=4, R represents a group of the formula ##STR37##
Claim 23
Dependent Claim
36 words
A synthetic resin composition according to claim 11, wherein the composition contains 0.001 to 5 parts by weight of the compound represented by the general formula (I) for 100 parts by weight of the synthetic resin.
Claim 24
Dependent Claim
15 words
A synthetic resin composition according to claim 12, wherein the synthetic resin is a polyolefin.
Claim 25
Dependent Claim
13 words
A synthetic resin composition according to claim 13, wherein the polyolefin is polypropylene.
Claim 26
Dependent Claim
35 words
A synthetic resin composition according to claim 11, wherein as the compound of general formula (I) use is made of a compound represented by the general formula (II) ##STR38## wherein A is as defined above.
Claim 27
Dependent Claim
35 words
A synthetic resin composition according to claim 11, wherein as the compound of general formula (I) use is made of a compound represented by the general formula (III) ##STR39## wherein A is as defined above.
Claim 28
Dependent Claim
58 words
A stabilized synthetic resin composition comprising a synthetic resin and, incorporated therein, a compound represented by the general formula (I) ##STR40## wherein A, n and R are as defined above, and a compound represented by the general formula (IV) ##STR41## wherein R represents an alkyl group having 12 to 20 carbon atoms, in a weight ratio of (I):(IV)=1:1-10.
Claim 29
Dependent Claim
58 words
A stabilized synthetic resin composition comprising a synthetic resin and, incorporated therein, a compound represented by the general formula (I) ##STR40## wherein A, n and R are as defined above, and a compound represented by the general formula (IV) ##STR41## wherein R represents an alkyl group having 12 to 20 carbon atoms, in a weight ratio of (I):(IV)=1:1-10.
Claim 30
Dependent Claim
42 words
A synthetic resin composition according to claim 17, wherein the total amount of the compound of general formula (I) and the compound of general formula (IV) is 0.001 to 5 parts by weight for 100 parts by weight of the synthetic resin.
Claim 31
Dependent Claim
15 words
A synthetic resin composition according to claim 17, wherein the synthetic resin is a polyolefin.
Claim 32
Dependent Claim
13 words
A synthetic resin composition according to claim 19, wherein the polyolefin is polypropylene.
Claim 33
Dependent Claim
35 words
A synthetic resin composition according to claim 20, wherein as the compound of general formula (I) used is made of a compound represented by the general formula (II) ##STR42## wherein A is as defined above.
Claim 34
Dependent Claim
35 words
A synthetic resin composition according to claim 20, wherein as the compound of general formula (I) use is made of a compound represented by the general formula (III) ##STR43## wherein A is as defined above.
Claim 35
Dependent Claim
16 words
A synthetic resin composition according to claim 17, wherein the synthetic resin is an ABS resin.
Claim 36
Dependent Claim
35 words
A synthetic resin composition according to claim 23, wherein as the compound of general formula (I) used is made of a compound represented by the general formula (II) ##STR44## wherein A is as defined above.
Claim 37
Dependent Claim
35 words
A synthetic resin composition according to claim 23, wherein as the compound of general formula (I) use is made of a compound represented by the general formula (III) ##STR45## wherein A is as defined above.
Claim 38
Dependent Claim
58 words
A stabilized synthetic resin composition comprising a synthetic resin and, incorporated therein, a compound represented by the general formula (I) ##STR46## wherein A, n and R are as defined above, and a compound represented by the general formula (V) ##STR47## wherein R represents an alkyl group having 4 to 20 carbon atoms, in a weight ratio of (I):(V)=1:1-10.
Claim 39
Dependent Claim
58 words
A stabilized synthetic resin composition comprising a synthetic resin and, incorporated therein, a compound represented by the general formula (I) ##STR46## wherein A, n and R are as defined above, and a compound represented by the general formula (V) ##STR47## wherein R represents an alkyl group having 4 to 20 carbon atoms, in a weight ratio of (I):(V)=1:1-10.
Claim 40
Dependent Claim
42 words
A synthetic resin composition according to claim 26, wherein the total amount of the compound of general formula (I) and the compound of general formula (V) is 0.001 to 5 parts by weight for 100 parts by weight of the synthetic resin.
Claim 41
Dependent Claim
15 words
A synthetic resin composition according to claim 26, wherein the synthetic resin is a polyolefin.
Claim 42
Dependent Claim
13 words
A synthetic resin composition according to claim 28, wherein the polyolefin is polypropylene.
Claim 43
Dependent Claim
35 words
A synthetic resin composition according to claim 29, wherein as the compound of general formula (I) use is made of a compound represented by the general formula (II) ##STR48## wherein A is as defined above.
Claim 44
Dependent Claim
29 words
A synthetic resin composition according to claim 29, wherein as the compound of general formula (I) use is made of a compound represented by the general formula (III) ##STR49##
Claim 45
Dependent Claim
16 words
A synthetic resin composition according to claim 26, wherein the synthetic resin is a ABS resin.
Claim 46
Dependent Claim
35 words
A synthetic resin composition according to claim 32, wherein as the compound of general formula (I) use is made of a compound represented by the general formula (II) ##STR50## wherein A is as defined above.
Claim 47
Dependent Claim
29 words
A synthetic resin composition according to claim 32, wherein as the compound of general formula (I) use is made of a compound represented by the general formula (III) ##STR51##
Claim 48
Dependent Claim
65 words
A process for preparing a compound represented by the general formula (I) ##STR52## wherein A, n and R are as defined above, which comprises reacting an aliphatic alcohol of 1 to 20 carbon atoms, 1,3,5-tris(2-hydroxyethyl)-S-triazine-2,4,6(1H,3H,5H)-trione, or pentaerythritol and a 2-methyl-4-t-butyl-5-hydroxyphenylalkanoic acid represented by the general formula (VI) ##STR53## wherein A is as defined above, or an acid chloride thereof or a lower alkyl ester thereof.
Claim 49
Dependent Claim
65 words
A process for preparing a compound represented by the general formula (I) ##STR52## wherein A, n and R are as defined above, which comprises reacting an aliphatic alcohol of 1 to 20 carbon atoms, 1,3,5-tris(2-hydroxyethyl)-S-triazine-2,4,6(1H,3H,5H)-trione, or pentaerythritol and a 2-methyl-4-t-butyl-5-hydroxyphenylalkanoic acid represented by the general formula (VI) ##STR53## wherein A is as defined above, or an acid chloride thereof or a lower alkyl ester thereof.
References Cited (Backward Citations)
US3285855A
Cited
US3629194A
Cited
US3763093A
Cited
US3862053A
Cited
US3988363A
Cited
US4032562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |