US4287115A
Expired / Lapsed
US
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Filler mixtures and thermoset resins containing same
Assignee: Dow Chemical Co
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Filing: 1979-11-13
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Granted: 1981-09-01
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Expires: 1999-11-13
Abstract
Abstract Filler mixtures containing an amorphous-pyrogenic or fumed silica and a micro or short fiber filler material such as calcium silicate are useful in preparing trowelable thermosettable resin compositions. They are particularly suitable for use in epoxy resin compositions.
Inventors
- 👤 Bobby Legler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:31
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K3/00; C08K3/34
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
37 words
A filler mixture comprising (a) from about 1 to about 20 percent by weight of amorphous-pyrogenic silica and (b) from about 80 to about 99 percent by weight of a micro or short fiber inorganic filler material.
Claim 2
Dependent Claim
37 words
A filler mixture comprising (a) from about 1 to about 20 percent by weight of amorphous-pyrogenic silica and (b) from about 80 to about 99 percent by weight of a micro or short fiber inorganic filler material.
Claim 3
Dependent Claim
39 words
The mixture of claim 1 wherein component (a) is present in quantities of from about 5 to about 15 percent by weight and component (b) is present in quantities of from about 85 to about 95 percent by weight.
Claim 4
Dependent Claim
43 words
The mixture of claim 2 wherein component (b) is selected from mineral wool, a white to light gray, free-flowing short fiber comprising about 75% calcium silicate with the balance consisting of oxides of aluminum, magnesium and other light weight metals or calcium silicate.
Claim 5
Dependent Claim
11 words
The mixture of claim 3 wherein component (b) is calcium silicate.
Claim 6
Dependent Claim
72 words
A filled, curable, thermosettable resin composition containing a thermosettable resin, a curing quantity of a curing system therefor and a sufficient quantity of a filler mixture so as to render the composition non-flowable and trowelable, said filler mixture comprising (a) from about 1 to about 20 percent by weight of amorphous-pyrogenic silica and (b) from about 80 to about 99 percent by weight of a micro or short fiber inorganic filler material.
Claim 7
Dependent Claim
72 words
A filled, curable, thermosettable resin composition containing a thermosettable resin, a curing quantity of a curing system therefor and a sufficient quantity of a filler mixture so as to render the composition non-flowable and trowelable, said filler mixture comprising (a) from about 1 to about 20 percent by weight of amorphous-pyrogenic silica and (b) from about 80 to about 99 percent by weight of a micro or short fiber inorganic filler material.
Claim 8
Dependent Claim
43 words
The composition of claim 5 wherein said filler mixture comprises (a) from about 5 to about 15 percent by weight of amorphous-pyrogenic silica and (b) from about 85 to about 95 percent by weight of a micro or short fiber inorganic filler material.
Claim 9
Dependent Claim
43 words
The composition of claim 6 wherein component (b) is selected from mineral wool, a white to light gray, free-flowing short fiber comprising about 75% calcium silicate with the balance consisting of oxides of aluminum, magnesium and other light weight metals or calcium silicate.
Claim 10
Dependent Claim
11 words
The composition of claim 7 wherein component (b) is calcium silicate.
Claim 11
Dependent Claim
18 words
The composition of claims 5, 6, 7 or 8 wherein the thermosettable resin is a liquid epoxy resin.
Claim 12
Dependent Claim
16 words
The composition of claim 9 wherein the epoxy resin is a diglycidyl ether of bisphenol A.
Claim 13
Dependent Claim
15 words
The composition of claim 10 wherein the epoxy resin is a phenol-formaldehyde epoxy novolac resin.
Claim 14
Dependent Claim
12 words
The composition of claim 9 wherein the curing system is a polyamide.
Claim 15
Dependent Claim
11 words
The composition of claim 10 wherein the curing system is polyamide.
Claim 16
Dependent Claim
12 words
The composition of claim 11 wherein the curing system is a polyamide.
Claim 17
Dependent Claim
14 words
The composition of claims 5, 6, 7 or 8 cured to a thermoset condition.
Claim 18
Dependent Claim
10 words
The composition of claim 9 cured to a thermoset condition.
Claim 19
Dependent Claim
10 words
The composition of claim 10 cured to a thermoset condition.
Claim 20
Dependent Claim
10 words
The composition of claim 11 cured to a thermoset condition.
Claim 21
Dependent Claim
10 words
The composition of claim 12 cured to a thermoset condition.
Claim 22
Dependent Claim
10 words
The composition of claim 13 cured to a thermoset condition.
Claim 23
Dependent Claim
10 words
The composition of claim 14 cured to a thermoset condition.
Claim 24
Dependent Claim
38 words
A filled, curable thermosettable resin composition containing a curing quantity of a curing system therefor and a sufficient quantity of a filler mixture defined in claims 1, 2, 3 or 4 to render the composition non-flowable and trowelable.
Claim 25
Dependent Claim
13 words
The composition of claim 22 wherein the thermosettable resin is an epoxy resin.
Claim 26
Dependent Claim
16 words
The composition of claim 23 wherein the epoxy resin is a diglycidyl ether of bisphenol A.
Claim 27
Dependent Claim
15 words
The composition of claim 23 wherein the epoxy resin is a phenol-formaldehyde epoxy novolac resin.
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) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |