US4460712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions producing aminofunctional silicone foams and coatings
Assignee: Dow Silicones Corp
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Filing: 1983-12-23
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Granted: 1984-07-17
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Expires: 2003-12-23
Abstract
Abstract Compositions that cure rapidly to produce silicone foams and protective coatings are disclosed. These compositions comprise: (A) a certain liquid copolymeric polyorganosiloxane; and (B) an amino functional silicone polymer. For example, simple mixtures of the liquid copolymeric polyorganosiloxane and a polydiorganosiloxane having aminoalkyl substituents can be mixed together to form a resilient silicone foam. If the foam compositions are further provided with certain mineral fillers, a high degree of fire resistance is attained.
Inventors
- 👤 John D. Blizzard
- 👤 Terence J. Swihart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:41
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08L83/10; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/14; C08G77/16; C08G77/18; C08G77/22; C08G77/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
134 words
A method for producing a silicone foam, said method comprising mixing together (A) the reaction product of (i) an organosilicon resin consisting essentially of R 3 SiO 1/2 units and SiO 4/2 units, wherein R represents a monovalent hydrocarbon radical, and the ratio of R 3 SiO 1/2 unit to SiO 4/2 units is from 0.6/1 to 0.9/1, and (ii) a polyorganohydrogensiloxane and (B) an aminofunctional silicone fluid polymer having the general unit formula R' a Q b SiO.sub.(4-a-b)/2, wherein in said unit formula R' is selected from the group consisting of monovalent hydrocarbon radicals, hydroxy radicals, and alkoxy radicals; Q is an aminofunctional radical; the sum of the values of a and b is an average of at least 1; there being in said aminofunctional silicone fluid polymer, at least one Q radical.
Claim 2
Independent Claim
134 words
A method for producing a silicone foam, said method comprising mixing together (A) the reaction product of (i) an organosilicon resin consisting essentially of R 3 SiO 1/2 units and SiO 4/2 units, wherein R represents a monovalent hydrocarbon radical, and the ratio of R 3 SiO 1/2 unit to SiO 4/2 units is from 0.6/1 to 0.9/1, and (ii) a polyorganohydrogensiloxane and (B) an aminofunctional silicone fluid polymer having the general unit formula R' a Q b SiO.sub.(4-a-b)/2, wherein in said unit formula R' is selected from the group consisting of monovalent hydrocarbon radicals, hydroxy radicals, and alkoxy radicals; Q is an aminofunctional radical; the sum of the values of a and b is an average of at least 1; there being in said aminofunctional silicone fluid polymer, at least one Q radical.
Claim 3
Dependent Claim
13 words
A method as claimed in claim 1 wherein Q is a diaminoalkyl radical.
Claim 4
Dependent Claim
26 words
A method as claimed in claim 2 wherein the diaminoalkyl radical is the --CH 2 CH(CH 3 )CH 2 NHCH 2 CH 2 NH 2 radical.
Claim 5
Dependent Claim
81 words
A method as claimed in claim 3 wherein the aminofunctional silicone fluid polymer is a polydiorganosiloxane having the general formula R"Me.sub.2 SiO(Me.sub.2 SiO).sub.x (MeQSiO).sub.y SiMe.sub.2 R", wherein, in said general formula, Me represents the methyl radical R" is selected from the group consisting of R' radicals and Q radicals x has a value of from 0 to 7000, y has a value of from 1 to 5000, and the sum of the values of x plus y is at least 18.
Claim 6
Dependent Claim
35 words
A method as claimed in claim 4 wherein there is present 40 to 60 parts of component (A) and 60 to 40 parts of component (B), based on 100 total parts of (A) and (B).
Claim 7
Dependent Claim
15 words
A method as claimed in claim 5 wherein the composition further comprises a mineral filler.
Claim 8
Dependent Claim
19 words
A method as claimed in claim 6 wherein the mineral filler is Al 2 O 3 ·3H 2 O.
Claim 9
Dependent Claim
10 words
A silicone foam produced by the method of claim 1.
Claim 10
Dependent Claim
10 words
A silicone foam produced by the method of claim 4.
Claim 11
Dependent Claim
10 words
A silicone foam produced by the method of claim 6.
Claim 12
Dependent Claim
10 words
A silicone foam produced by the method of claim 7.
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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |