US3988289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding compositions of a resin and hydrated cement
Assignee: Owens Corning
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Filing: 1975-08-11
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Granted: 1976-10-26
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Expires: 1995-08-11
Abstract
Abstract We have developed molding compositions comprising a mixture of phenolic resin and hydrated cement. A minimum amount of hydration in the cement provides strength and cure enhancement to the phenolic resin. We think the hydrated cement acts as a processing aid to the phenolic resin because of surface activity.
Inventors
- 👤 Jeri O. Clark
- 👤 Bobby J. Hankins
- 👤 Walter D. Cottrell, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:49
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B24/00; C04B24/24; C04B24/28; C04B24/30; C04B24/302; C08; C08K; C08K3/00; C08K3/01; C08K3/013
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
71 words
An uncured moldable composition comprising a phenolic resin and hydrated cement, wherein the phenolic resin and hydrated cement have a weight ratio of resin to cement ranging from 1:9 to 9:1 based on the weight of hydrated cement and on resin solids, wherein the hydrated cement has a total water content of at least 2 percent by weight, and wherein the resin is a phenol-formaldehyde condensate or a phenol-amino compound-formaldehyde condensate.
Claim 2
Dependent Claim
71 words
An uncured moldable composition comprising a phenolic resin and hydrated cement, wherein the phenolic resin and hydrated cement have a weight ratio of resin to cement ranging from 1:9 to 9:1 based on the weight of hydrated cement and on resin solids, wherein the hydrated cement has a total water content of at least 2 percent by weight, and wherein the resin is a phenol-formaldehyde condensate or a phenol-amino compound-formaldehyde condensate.
Claim 3
Dependent Claim
23 words
A composition according to claim 1 wherein the hydrated cement has a total water content ranging from 2 to 25 percent by weight.
Claim 4
Dependent Claim
20 words
A composition according to claim 1 wherein the hydrated cement has a total water content of 12.80 percent by weight.
Claim 5
Dependent Claim
24 words
A composition according to claim 1 wherein the hydrated cement has a water of hydration content ranging from 2 to 12.3 percent by weight.
Claim 6
Dependent Claim
21 words
A composition according to claim 1 wherein the hydrated cement has a water of hydration content of 6.5 percent by weight.
Claim 7
Dependent Claim
16 words
A composition according to claim 1 including glass fibers in addition to the resin and cement.
Claim 8
Dependent Claim
32 words
A composition according to claim 6 wherein the glass fibers are present in an amount of up to 0 to 60 weight percent based on the weight of the uncured moldable composition.
Claim 9
Dependent Claim
15 words
A composition according to claim 1 wherein the amino compound is urea, melamine, or dicyandiamide.
Claim 10
Dependent Claim
13 words
A composition according to claim 1 wherein the resin is a phenol-formaldehyde condensate.
Claim 11
Dependent Claim
15 words
A composition according to claim 1 wherein the hydrated cement is Type I Portland cement.
Claim 12
Dependent Claim
13 words
A molded article formed by curing under pressure the composition of claim 1.
Claim 13
Dependent Claim
62 words
A sheet molding compound comprising a phenol-formaldehyde condensate, hydrated ground cement clinker, and glass fibers, wherein the hydrated clinker has a total water content of at least 2 percent by weight, and wherein the condensate and hydrated clinker have a weight ratio of condensate to clinker ranging from 1:9 to 9:1 based on the weight of hydrated clinker and on condensate solids.
Claim 14
Dependent Claim
62 words
A sheet molding compound comprising a phenol-formaldehyde condensate, hydrated ground cement clinker, and glass fibers, wherein the hydrated clinker has a total water content of at least 2 percent by weight, and wherein the condensate and hydrated clinker have a weight ratio of condensate to clinker ranging from 1:9 to 9:1 based on the weight of hydrated clinker and on condensate solids.
Claim 15
Dependent Claim
62 words
A sheet molding compound according to claim 12 wherein: a. the phenol-formaldehyde condensate has a mole ratio of formaldehyde to phenol of 2:1; b. the condensate is present in an amount of 35 weight percent; c. the ground clinker is present in an amount of 39 weight percent; and d. the glass fibers are present in an amount of 20 weight percent.
Claim 16
Dependent Claim
13 words
A molded panel formed by curing under pressure the compound of claim 12.
Claim 17
Dependent Claim
49 words
A bulk molding compound comprising a B-staged novolac resin, hydrated Type I Portland cement, and glass fibers, wherein the hydrated cement has a total water content of at least 2 percent by weight, and wherein the novolac resin and cement have a mole ratio ranging from 1:9 to 9:1.
Claim 18
Dependent Claim
49 words
A bulk molding compound comprising a B-staged novolac resin, hydrated Type I Portland cement, and glass fibers, wherein the hydrated cement has a total water content of at least 2 percent by weight, and wherein the novolac resin and cement have a mole ratio ranging from 1:9 to 9:1.
Claim 19
Dependent Claim
21 words
A bulk molding compound according to claim 15 wherein the glass fibers are present in an amount of 5 weight percent.
Claim 20
Dependent Claim
13 words
A molded panel formed by curing under pressure the compound of claim 15.
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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) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |