US3872059A
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Polymeric sealants
Assignee: Solvay Solutions UK Ltd
•
Filing: 1973-10-29
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Granted: 1975-03-18
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Expires: 1993-10-29
Abstract
Abstract A moisture curable sealant containing unreacted SH groups comprises the product of reacting under anhydrous conditions (1) a polysulphide of the statistical formula
Inventors
- 👤 Christopher Scott Ely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:57
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/14; C08G75/02; C08G75/04; C08G75/045; C09; C09J; C09J181/00; C09J181/04; C09K; C09K3/00; C09K3/10; C09K3/1006; C09K3/1012; C09K2003/1034; C09K2003/1056; C09K2200/00; C09K2200/02; C09K2200/0239
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
29 words
A MOISTURE CURABLE SEALANT MAINTAINED UNDER ANHYDROUS CONDITIONS CONTAINING UNREACTED SH GROUPS WHICH COMPRISES THE ADDITION PRODUCT OF REACTING UNDER ANHYDROUS CONDITIONS (1) A POLYSULPHIDE OF THE STATISTICAL FORMULA
Claim 2
Dependent Claim
29 words
A MOISTURE CURABLE SEALANT MAINTAINED UNDER ANHYDROUS CONDITIONS CONTAINING UNREACTED SH GROUPS WHICH COMPRISES THE ADDITION PRODUCT OF REACTING UNDER ANHYDROUS CONDITIONS (1) A POLYSULPHIDE OF THE STATISTICAL FORMULA
Claim 3
Dependent Claim
28 words
A sealant according to claim 1 wherein R'''' is a tri- or polyvalent radical containing C, H and S in the form of SH and b'' is 1.
Claim 4
Dependent Claim
10 words
A sealant according to claim 2 wherein R'''' is a
Claim 5
Dependent Claim
44 words
A sealant according to claim 1 wherein R'' is a divalent radical free from aliphatic unsaturation consisting of radicals containing C, H and at least one atom selected from the group consisting of O and S in the form of C-O-C or C-S-C groups.
Claim 6
Dependent Claim
16 words
A sealant according to claim 4 wherein R'' is a CH2 O CH2 O CH2 radical.
Claim 7
Dependent Claim
36 words
A sealant according to claim 1 wherein the polysulphide has been reacted with an amount of the compound of formula QSiX3 sufficient to react with 5 - 20 percent of the SH groups of the polysulphide.
Claim 8
Dependent Claim
18 words
A sealant according to claim 1 wherein Q is a group selected from 3-glycidoxypropyl, 3-methacryloxypropyl and vinyl groups.
Claim 9
Dependent Claim
33 words
A sealant according to claim 7 wherein in the compound of formula QSiX3, two of the X groups represents methoxy or ethoxy groups and the third represents a methoxy, ethoxy or methyl group.
Claim 10
Dependent Claim
34 words
A sealant according to claim 7 wherein the compound of formula QSiX3 is selected from the group consisting of vinyl trimethoxy silane, vinyl triethoxy silane, vinyl methyl dimethoxy silane and vinyl methyl diethoxy silane.
Claim 11
Dependent Claim
48 words
A sealant according to claim 1 which also contains from 0.5 - 10 percent by weight of a silane inhibitor of the formula Zn Si(OZ'')4 n , wherein n'' is 0, 1 or 2, Z is alkyl or aryl and Z'' is a methyl, ethyl or acyl group.
Claim 12
Dependent Claim
17 words
A sealant according to claim 1 which also contains as a moisture curing catalyst a titanate ester.
Claim 13
Dependent Claim
13 words
A sealant according to claim 11 wherein the titanate ester is tetraisopropyl titanate.
Claim 14
Dependent Claim
18 words
A sealant according to claim 3 which comprises the product of reacting a polysulphide of the statistical formula
Claim 15
Dependent Claim
66 words
A process for the preparation of a moisture curable sealant maintained under anhydrous conditions containing unreacted SH groups, which process comprises reacting under anhydrous conditions a polysulphide as defined in claim 1 with an amount of a compound of formula QSiX3, wherein Q and X are as defined in claim 1, sufficIent to react with 3 - 30 percent of the SH groups in the polysulphide.
Claim 16
Dependent Claim
35 words
A process according to claim 14 wherein the polysulphide is reacted with an amount of the compound of the formula QSiX3 sufficient to react with 5 - 20 percent of SH groups in the polysulphide.
Claim 17
Dependent Claim
14 words
A process according to claim 14 carried out in the absence of a solvent.
Claim 18
Dependent Claim
12 words
A process according to claim 14 wherein R'''' in the polysulphide is
Claim 19
Dependent Claim
12 words
A process according to claim 17 wherein R'' is CH2O CH2O CH2.
Claim 20
Dependent Claim
33 words
A process according to claim 17 wherein in the compound of formula QSiX3, two of the X groups represent methoxy or ethoxy groups and the third represents a methoxy, ethoxy or methyl group.
Claim 21
Dependent Claim
15 words
A process according to claim 18 which comprises reacting a polysulphide of the statistical formula
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |