Patent US4113678A successfully refreshed from Google Patents.
US4113678A
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Tin sulfide stabilizer for styrene polymer
Assignee: Argus Chemical Corp
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Filing: 1977-06-14
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Granted: 1978-09-12
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Expires: 1997-06-14
Abstract
Abstract Processability, color, and mechanical properties upon heating of a rubber modified styrene polymer are improved by incorporating in the polymer a new sulfide compound of four-valent tin having linked to tin through carbon 1 or 2 alkoxycarbonylalkylene groups having 1 to 8 carbon atoms in the alkoxy group and 2 to 3 carbon atoms in the alkylene group.
Inventors
- 👤 Motonobu Minagawa
- 👤 Toshio Ohzeki
- 👤 Tetsuo Sekiguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:30
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C07F7/226; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
167 words
A sulfide compound of four-valent tin having linked to tin through carbon from 1 to 2 alkoxycarbonylalkylene groups having 1 to 8 carbon atoms in the alkoxy group and 2 to 3 carbon atoms in the alkylene group, and directly linked to tin at least one bivalent sulfide group, represented by one of the formulae [S.sub.a (C.sub.b H.sub.2b CO.sub.2).sub.c Sn.sub.d (C.sub.e H.sub.2e CO.sub.2 R).sub.2 ].sub.n and ##STR12## in which R is an alkyl group having from 1 to 8 carbon atoms, R' is a hydrocarbon group having from 4 to 18 carbon atoms, R" is -- C e H 2e CO 2 R or -- SC b H 2b CO 2 R' a is an integer from 1 to 4, b is 1 or 2, c is 0 or 1, d is 1 or 2, e is 2 or 3, n is from 1 to about 100 and L is a number from 1 to 10, provided that when d is 2, a is at least 3.
Claim 2
Dependent Claim
167 words
A sulfide compound of four-valent tin having linked to tin through carbon from 1 to 2 alkoxycarbonylalkylene groups having 1 to 8 carbon atoms in the alkoxy group and 2 to 3 carbon atoms in the alkylene group, and directly linked to tin at least one bivalent sulfide group, represented by one of the formulae [S.sub.a (C.sub.b H.sub.2b CO.sub.2).sub.c Sn.sub.d (C.sub.e H.sub.2e CO.sub.2 R).sub.2 ].sub.n and ##STR12## in which R is an alkyl group having from 1 to 8 carbon atoms, R' is a hydrocarbon group having from 4 to 18 carbon atoms, R" is -- C e H 2e CO 2 R or -- SC b H 2b CO 2 R' a is an integer from 1 to 4, b is 1 or 2, c is 0 or 1, d is 1 or 2, e is 2 or 3, n is from 1 to about 100 and L is a number from 1 to 10, provided that when d is 2, a is at least 3.
Claim 3
Dependent Claim
19 words
A tin sulfide compound according to claim 1 in which each bivalent sulfide group consists of one sulfur atom.
Claim 4
Dependent Claim
21 words
A tin sulfide compound according to claim 1 having at least one sulfide group consisting of a plurality of sulfur atoms.
Claim 5
Dependent Claim
28 words
A tin sulfide according to claim 1 having at least one sulfide group which is a carboxyalkylene sulfide with 1 to 2 carbon atoms in the alkylene group.
Claim 6
Dependent Claim
82 words
A tin sulfide compound according to claim 1 having the formula [S.sub.a (C.sub.b H.sub.2b CO.sub.2).sub.c Sn.sub.d (C.sub.e H.sub.2e CO.sub.2 R).sub.2 ].sub.n in which R is an alkyl group having from 1 to 8 carbon atoms, a is an integer from 1 to 4, b is 1 or 2, c is 0 or 1, d is 1 or 2, e is 2 or 3, and n is from 1 to about 100, provided that when d is 2 a is at least 3.
Claim 7
Dependent Claim
85 words
A tin sulfide compound according to claim 1 having the formula ##STR13## in which R is an alkyl group having from 1 to 8 carbon atoms, R' is a hydrocarbon group having 4 to 18 carbon atoms, R" is --C e H 2e CO2R or -- SC b H 2b CO 2 R', a is an integer from 1 to 4, b is 1 or 2, c is 0 or 1, e is 2 or 3, and L is a number from 1 to 10.
Claim 8
Dependent Claim
17 words
A tin sulfide compound according to claim 5 in which a is 3 and d is 2.
Claim 9
Dependent Claim
17 words
A tin sulfide compound according to claim 5 in which a is 1 and c is 0.
Claim 10
Dependent Claim
20 words
A tin sulfide compound according to claim 5 in which a is 1, c is 1, and d is 1.
Claim 11
Dependent Claim
13 words
A tin sulfide compound according to claim 6 in which c is 0.
Claim 12
Dependent Claim
12 words
A tin sulfide compound according to claim 7 which is 2-ethoxycarbonylethylene-tin sulfide.
Claim 13
Dependent Claim
12 words
A tin sulfide compound according to claim 7 which is 2-n-octoxycarbonylethylene-tin sulfide.
Claim 14
Dependent Claim
12 words
A tin sulfide compound according to claim 8 which is bis(2-ethoxycarbonylethylene)-tin sulfide.
Claim 15
Dependent Claim
12 words
A tin sulfide compound according to claim 9 which is bis(2-ethoxycarbonylethylene)tin S,0-(2-carboxyethylene)sulfide.
Claim 16
Dependent Claim
14 words
A tin sulfide compound according to claim 10 which is bis(2-ethoxycarbonylethylene)tin 2-ethylhexyl thioglycolate sulfide.
Claim 17
Dependent Claim
31 words
A rubber-modified styrene polymer composition comprising polymerized styrene and polymerized aliphatic 1,3-diolefin and 0.005% to 5% by weight of the polymer composition of a tin sulfide compound according to claim 1.
Claim 18
Dependent Claim
15 words
A rubber-modified styrene polymer composition according to claim 16 comprising polymerized styrene and polymerized 1,3-butadiene.
Claim 19
Dependent Claim
14 words
A rubber-modified styrene polymer composition according to claim 16 comprising styrene, 1,3-butadiene, and acrylonitrile.
Claim 20
Dependent Claim
15 words
A rubber-modified styrene polymer composition according to claim 16 comprising styrene, 1,3-butadiene and methyl methacrylate.
Claim 21
Dependent Claim
58 words
A rubber modified styrene polymer composition according to claim 16 comprising a block copolymer of styrene and 1,3-butadiene having a non-elastomeric polymer block of styrene units with an average molecular weight within the range from 20,000 to 120,000 and an elastomeric polymer block of 1,3-butadiene units with an average molecular weight within the range from 20,000 to 1,000,000.
Claim 22
Dependent Claim
44 words
A composition able to improve the processability and color of a rubber modified styrene polymer upon heating comprising an amide or Group II metal salt of a carboxylic acid having 8 to 26 carbon atoms and a tin sulfide compound according to claim 1.
Claim 23
Dependent Claim
12 words
A composition according to claim 21 in which the amide is ethylenebisstearamide.
Claim 24
Dependent Claim
16 words
A composition according to claim 21 in which the Group II metal salt is calcium stearate.
Claim 25
Dependent Claim
16 words
A composition according to claim 21 in which the Group II metal salt is barium stearate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |