US4115437A
Expired / Lapsed
US
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Sulfonated product of butadiene or isoprene oligomer and the production therefor
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1977-09-15
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Granted: 1978-09-19
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Expires: 1997-09-15
Abstract
Abstract A sulfonated product of butadiene or isoprene oligomer of the formula: <IMAGE> wherein one of R1 and R1' is hydrogen or methyl and another one is hydrogen; R2' is hydrogen or methyl; one of X1 and X2 is -SO3M and another one is hydrogen; a and b are each an integer satisfying the conditions; n = a + b, 2 < n < 40 and 0 < b; M is hydrogen, Na, K, Li or -NR3R4R5R6; and R3, R4, R5 and R6 are each hydrogen or an alkyl having 1 to 6 carbon atoms, which has specific properties, particularly excellent hard water resistance, and is useful for various utilities, for instance, as a surfactant, emulsifier, or the like, and a process for the production of the sulfonated product.
Inventors
- 👤 Yoshinobu Matsuda
- 👤 Yukio Suzuki
- 👤 Seimei Yasui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:41
CPC Classifications
C; C07; C07C; C07C309/00; C07C2/00; C07C2/02; C07C2/04; C07C2/38; C07C2/40; C07C2/403; C07C2/406; C08; C08C; C08C19/00; C08C19/20; C07C2531/00; C07C2531/02; C07C2531/04; C07C2531/16; C07C2531/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
104 words
A compound of the formula: ##STR5## wherein one of R 1 and R 1 ' is hydrogen or methyl and another one is hydrogen; R 2 is hydrogen or methyl; one of X 1 and X 2 is --SO 3 M and another one is hydrogen; a and b are each an integer satisfying the conditions: n = a + b, 2≦n≦40 and 0≦b; M is hydrogen, Na, K, Li or --NR 3 R 4 R 5 R 6 ; and R 3 , R 4 , R 5 and R 6 are each hydrogen or an alkyl having 1 to 6 carbon atoms.
Claim 2
Dependent Claim
104 words
A compound of the formula: ##STR5## wherein one of R 1 and R 1 ' is hydrogen or methyl and another one is hydrogen; R 2 is hydrogen or methyl; one of X 1 and X 2 is --SO 3 M and another one is hydrogen; a and b are each an integer satisfying the conditions: n = a + b, 2≦n≦40 and 0≦b; M is hydrogen, Na, K, Li or --NR 3 R 4 R 5 R 6 ; and R 3 , R 4 , R 5 and R 6 are each hydrogen or an alkyl having 1 to 6 carbon atoms.
Claim 3
Dependent Claim
15 words
The compound according to claim 1, wherein b = 0 and R 2 is hydrogen.
Claim 4
Dependent Claim
15 words
The compound according to claim 1, wherein b = 0 and R 2 is methyl.
Claim 5
Dependent Claim
15 words
The compound according to claim 1, wherein b = 1 and R 2 is hydrogen.
Claim 6
Dependent Claim
15 words
The compound according to claim 1, wherein b = 1 and R 2 is methyl.
Claim 7
Dependent Claim
15 words
The compound according to claim 1, wherein b = 2 and R 2 is hydrogen.
Claim 8
Dependent Claim
15 words
The compound according to claim 1, wherein b = 2 and R 2 is methyl.
Claim 9
Dependent Claim
15 words
The compound according to claim 1, wherein b = 3 and R 2 is hydrogen.
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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |