US5733996A
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US
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Organosiloxane compositions
Assignee: Dow Silicones Belgium SPRL
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Filing: 1996-06-04
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Granted: 1998-03-31
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Expires: 2016-06-04
Abstract
Abstract The specification describes and claims a composition curable in presence of atmospheric moisture to an elastomeric body, comprising (A) the product formed by mixing a polymeric material having at least two groups bonded to silicon which are hydroxyl or hydrolysable (eg alkoxy) groups and an alkoxysilane curative and (B) a compound according to the general formula M OR! x OR'! y where M represents a metal having a valency of 4 selected from Group IVB of the Periodic Table and is preferably titanium, x has a value from 0 to 1, y has a value from 3 to 4 and (x+y)=4, R' represents a monovalent tertiary aliphatic hydrocarbon group and R represents a monovalent linear aliphatic hydrocarbon group having 1 to 6 carbon atoms which is different from R'. Preferred compounds (B) are those in which R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms, the most preferred groups R' being tertiary butyl and t-amyl groups. The compositions cure without need for the presence of a chelating agent and the preferred compositions cure quickly and do not yellow.
Inventors
- 👤 Francois De Buyl
- 👤 Patrick Leempoel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:15
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1006; C09K3/1018; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08; C08K; C08K3/00; C08K3/34; C08K3/36; C08K5/00; C08K5/04; C08K5/05; C08K5/057; C08L; C08L83/00; C08L83/04; C08G77/14; C08G77/16; C08G77/18; C08L2666/00; C08L2666/28; C08L2666/44
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
118 words
A moisture curable composition capable of cure to an elastomeric body, comprising (A) the product formed by mixing a polymeric material having at least two groups bonded to silicon which are hydroxyl or alkoxy groups and an alkoxysilane curative and (B) a compound according to the general formula M OR! x OR'! y where M represents a metal having a valency of 4 selected from Group IVB of the Periodic Table, x has an average value from 0 to 1, y has an average value from 3 to 4 and (x+y)=4,R' represents a monovalent tertiary aliphatic hydrocarbon group and R represents a monovalent linear aliphatic hydrocarbon group having 1 to 6 carbon atoms which is different than R'.
Claim 2
Dependent Claim
118 words
A moisture curable composition capable of cure to an elastomeric body, comprising (A) the product formed by mixing a polymeric material having at least two groups bonded to silicon which are hydroxyl or alkoxy groups and an alkoxysilane curative and (B) a compound according to the general formula M OR! x OR'! y where M represents a metal having a valency of 4 selected from Group IVB of the Periodic Table, x has an average value from 0 to 1, y has an average value from 3 to 4 and (x+y)=4,R' represents a monovalent tertiary aliphatic hydrocarbon group and R represents a monovalent linear aliphatic hydrocarbon group having 1 to 6 carbon atoms which is different than R'.
Claim 3
Dependent Claim
12 words
A moisture curable composition according to claim 1 wherein M represents titanium.
Claim 4
Dependent Claim
41 words
A moisture curable composition according to claim 1 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 5
Dependent Claim
41 words
A moisture curable composition according to claim 2 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 6
Dependent Claim
21 words
A moisture curable composition according to claim 3 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 7
Dependent Claim
21 words
A moisture curable composition according to claim 4 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 8
Dependent Claim
14 words
A moisture curable composition according to claim 1 wherein R represents the isopropyl group.
Claim 9
Dependent Claim
16 words
A moisture curable composition according to claim 1 wherein the catalyst material consists solely of ##STR3##
Claim 10
Dependent Claim
33 words
A composition according to claim 1 wherein the polymeric material is an at least substantially linear polydiorganosiloxane having terminal groups selected from the groups SiMe 2 OH and SiMe 2 R"'Si(OR) 3 .
Claim 11
Dependent Claim
12 words
A moisture curable composition according to claim 9 wherein M represents titanium.
Claim 12
Dependent Claim
41 words
A moisture curable composition according to claim 9 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 13
Dependent Claim
41 words
A moisture curable composition according to claim 10 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 14
Dependent Claim
21 words
A moisture curable composition according to claim 11 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 15
Dependent Claim
21 words
A moisture curable composition according to claim 12 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 16
Dependent Claim
14 words
A moisture curable composition according to claim 9 wherein R represents the isopropyl group.
Claim 17
Dependent Claim
16 words
A moisture curable composition according to claim 9 wherein the catalyst material consists solely of ##STR4##
Claim 18
Dependent Claim
12 words
A composition according to claim 1 wherein the alkoxysilane is methyl trimethoxysilane.
Claim 19
Dependent Claim
12 words
A moisture curable composition according to claim 17 wherein M represents titanium.
Claim 20
Dependent Claim
41 words
A moisture curable composition according to claim 17 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 2 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 21
Dependent Claim
41 words
A moisture curable composition according to claim 18 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 22
Dependent Claim
21 words
A moisture curable composition according to claim 19 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 23
Dependent Claim
21 words
A moisture curable composition according to claim 20 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 24
Dependent Claim
14 words
A moisture curable composition according to claim 17 wherein R represents the isopropyl group.
Claim 25
Dependent Claim
16 words
A moisture curable composition according to claim 17 wherein the catalyst material consists solely of ##STR5##
Claim 26
Dependent Claim
11 words
A composition according to claim 7 also comprising finely divided filler.
Claim 27
Dependent Claim
12 words
A moisture curable composition according to claim 25 wherein M represents titanium.
Claim 28
Dependent Claim
42 words
A moisture curable composition according to claim 25 wherein R' represents C (R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 29
Dependent Claim
41 words
A moisture curable composition according to claim 26 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 30
Dependent Claim
21 words
A moisture curable composition according to claim 27 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 31
Dependent Claim
21 words
A moisture curable composition according to claim 28 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 32
Dependent Claim
14 words
A moisture curable composition according to claim 25 wherein R represents the isopropyl group.
Claim 33
Dependent Claim
16 words
A moisture curable composition according to claim 25 wherein the catalyst material consists solely of ##STR6##
Claim 34
Dependent Claim
14 words
A composition according to claim 25 wherein the finely divided filler is predominantly silica.
Claim 35
Dependent Claim
12 words
A moisture curable composition according to claim 33 wherein M represents titanium.
Claim 36
Dependent Claim
41 words
A moisture curable composition according to claim 33 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 37
Dependent Claim
41 words
A moisture curable composition according to claim 34 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 38
Dependent Claim
21 words
A moisture curable composition according to claim 35 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 39
Dependent Claim
21 words
A moisture curable composition according to claim 36 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 40
Dependent Claim
14 words
A moisture curable composition according to claim 33 wherein R represents the isopropyl group.
Claim 41
Dependent Claim
16 words
A moisture curable composition according to claim 33 wherein the catalyst material consists solely of ##STR7##
Claim 42
Independent Claim
162 words
A method of forming an elastomeric mass between surfaces which is adherent to at least two such surfaces which method comprises introducing between the surfaces a mass of a moisture curable composition comprising (A) the product formed by mixing a polymeric material having at least two groups bonded to silicon which are hydroxyl or hydrolysable groups, and an alkoxysilane curative, and (B) a catalyst material for catalysing the condensation reaction between the polymeric material and the alkoxysilane curative which catalyst material comprises a compound according to the general formula M OR! x OR'! y where M represents a metal having a valency of 4 selected from Group IVB of the Periodic Table, x has an average value from 0 to 1, y has an average value from a 3 to 4 and (x+y)=4, R' represents a monovalent tertiary aliphatic hydrocarbon group and R represents a monovalent linear aliphatic hydrocarbon group having 1 to 6 carbon atoms which is not a group R'.
Claim 43
Independent Claim
162 words
A method of forming an elastomeric mass between surfaces which is adherent to at least two such surfaces which method comprises introducing between the surfaces a mass of a moisture curable composition comprising (A) the product formed by mixing a polymeric material having at least two groups bonded to silicon which are hydroxyl or hydrolysable groups, and an alkoxysilane curative, and (B) a catalyst material for catalysing the condensation reaction between the polymeric material and the alkoxysilane curative which catalyst material comprises a compound according to the general formula M OR! x OR'! y where M represents a metal having a valency of 4 selected from Group IVB of the Periodic Table, x has an average value from 0 to 1, y has an average value from a 3 to 4 and (x+y)=4, R' represents a monovalent tertiary aliphatic hydrocarbon group and R represents a monovalent linear aliphatic hydrocarbon group having 1 to 6 carbon atoms which is not a group R'.
Claim 44
Dependent Claim
10 words
A method according to claim 41 wherein M represents titanium.
Claim 45
Dependent Claim
39 words
A method according to claim 41 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 46
Dependent Claim
39 words
A method according to claim 42 wherein R' represents C(R 2 R 3 R 4 ) in which each of R 2 , R 3 and R 4 represents a monovalent aliphatic chain having 1 to 6 carbon atoms.
Claim 47
Dependent Claim
19 words
A method according to claim 43 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 48
Dependent Claim
19 words
A method according to claim 44 wherein R' is selected from the group consisting of tertiary butyl and t-amyl.
Claim 49
Dependent Claim
12 words
A method according to claim 41 wherein R represents the isopropyl group.
Claim 50
Dependent Claim
25 words
A method according to claim 41 wherein the catalyst material is formed by chemical reaction between a tetra alkoxy titanium compound and a tertiary alcohol.
Claim 51
Dependent Claim
25 words
A method according to claim 41 wherein the chemical reaction to produce the catalyst material is brought about in the preparation of the product (A).
Claim 52
Dependent Claim
24 words
A composition according to claim 1 wherein the catalyst material is formed by chemical reaction between a tetra alkoxy titanium compound and tertiary alcohol.
Claim 53
Dependent Claim
25 words
A composition according to claim 50 wherein the chemical reaction to produce the catalyst material is brought about in the preparation of the product (A).
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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) | 2001-03-30 | 2001-09-29 | 2002-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-30 | 2005-09-29 | 2006-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-30 | 2009-09-29 | 2010-03-31 | $7700.00 | Window Closed / Lapsed |