US4677022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making lightweight body suitable for use as an additive in an article of manufacture, such lightweight body itself, and composite containing same
Assignee: Potters Industries LLC
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Filing: 1986-01-24
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Granted: 1987-06-30
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Expires: 2006-01-24
Abstract
Abstract A process for making a body suitable for use as an additive for incorporation in a plastic, which comprises the steps of forming a blend of glass-forming materials, converting the blend of glass-forming materials into a solidified porous form, and heating such solidified porous blended glass-forming materials to form an exterior glassy shell thereon; as well as lightweight body made by such process, and an article of manufacture incorporating such body.
Inventors
- 👤 Robert Dejaiffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:05
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/22; C08K7/24; C08K7/28; C03; C03C; C03C11/00; C03C11/002; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249969; Y10T428/25; Y10T428/252; Y10T428/259; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
27 words
As an article of manufacture a body which comprises a porous core comprising glass-forming materials including a silicon-source, and integral therewith a surrounding shell of glassy material.
Claim 2
Dependent Claim
27 words
As an article of manufacture a body which comprises a porous core comprising glass-forming materials including a silicon-source, and integral therewith a surrounding shell of glassy material.
Claim 3
Dependent Claim
17 words
A body as defined in claim 1, which exhibits a density of from 1.0 to 1.8 g/cc.
Claim 4
Dependent Claim
18 words
A body as defined in claim 1, which is of from 45 to 150 microns in maximum dimension.
Claim 5
Dependent Claim
16 words
A body as defined in claim 1, which is less than 45 microns in maximum dimension.
Claim 6
Dependent Claim
12 words
A body as defined in claim 1, which is spheroidal in configuration.
Claim 7
Dependent Claim
22 words
A body as defined in claim 1, wherein the glassy shell is formed of aluminosilicate glass, borosilicate glass, or soda lime glass.
Claim 8
Dependent Claim
24 words
A body as defined in claim 1, which is formed from an aqueous mixture comprising silica, calcium hydroxide, and sodium carbonate or sodium silicate.
Claim 9
Dependent Claim
25 words
A body as defined in claim 7, wherein the weight ratio of silica:calcium oxide:sodium oxide in the glassy shell is of from 3:1:1 to 98:1:1.
Claim 10
Dependent Claim
21 words
A body as defined in claim 8, wherein the weight ratio of silica:calcium oxide:sodium oxide in the glassy shell is 17:2:1.
Claim 11
Dependent Claim
51 words
As an article of manufacture, a composite which comprises a plurality of bodies each of which has a porous core comprising glass-forming materials including a silicon-source and integral therewith a surrounding shell of glassy material, and a matrix of thermosetting plastic or thermoplastic in which the plurality of bodies is incorporated.
Claim 12
Dependent Claim
51 words
As an article of manufacture, a composite which comprises a plurality of bodies each of which has a porous core comprising glass-forming materials including a silicon-source and integral therewith a surrounding shell of glassy material, and a matrix of thermosetting plastic or thermoplastic in which the plurality of bodies is incorporated.
Claim 13
Dependent Claim
19 words
A composite as defined in claim 10, wherein such bodies have a density of from 1.0 to 1.8 g/cc.
Claim 14
Dependent Claim
19 words
A composite as defined in claim 10, wherein such bodies are from 45 to 150 microns in maximum dimension.
Claim 15
Dependent Claim
27 words
A composite as defined in claim 10, wherein the weight ratio of silica:calcium oxide:sodium oxide in said shell of glassy material is of from 3:1:1 to 98:1:1.
Claim 16
Dependent Claim
51 words
As an article of manufacture, a composite which comprises a plurality of bodies each of which has a porous core comprising glass-forming materials including a silicon-source, and a matrix of thermosetting plastic in which the plurality of bodies is incorporated and throughout which the plurality of bodies is substantially uniformly distributed.
Claim 17
Dependent Claim
51 words
As an article of manufacture, a composite which comprises a plurality of bodies each of which has a porous core comprising glass-forming materials including a silicon-source, and a matrix of thermosetting plastic in which the plurality of bodies is incorporated and throughout which the plurality of bodies is substantially uniformly distributed.
Claim 18
Dependent Claim
19 words
A composite as defined in claim 14, wherein such bodies have a density of from 1.0 to 1.8 g/cc.
Claim 19
Dependent Claim
19 words
A composite as defined in claim 14, wherein the thermosetting plastic is an epoxy, a polyester, or a polyurethane.
Claim 20
Dependent Claim
48 words
As an article of manufacture, a composite which comprises a plurality of bodies each of which has a porous core comprising glass-forming materials including a silicon-source and integral therewith a surrounding shell of glassy material, and a matrix of thermoplastic in which the plurality of bodies is incorporated.
Claim 21
Dependent Claim
48 words
As an article of manufacture, a composite which comprises a plurality of bodies each of which has a porous core comprising glass-forming materials including a silicon-source and integral therewith a surrounding shell of glassy material, and a matrix of thermoplastic in which the plurality of bodies is incorporated.
Claim 22
Dependent Claim
21 words
A composite as defined in claim 17, wherein such bodies have a compressive strength of at least 10,000 to 15,000 psi.
Claim 23
Dependent Claim
19 words
A composite as defined in claim 17, wherein such bodies have a density of from 1.0 to 1.8 g/cc.
Claim 24
Dependent Claim
27 words
A composite as defined in claim 17, wherein the thermoplastic is an acetal, acrylic, nylon, polyethylene terephthalate, polybutylene terephthalate, polyethylene, polypropylene, vinyl, styrene or liquid crystal polymer.
Claim 25
Dependent Claim
20 words
A composite as defined in claim 17, wherein such bodies have a glass shell formed of aluminosilicate or borosilicate glass.
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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) | 1990-06-29 | 1990-12-29 | 1991-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-29 | 1994-12-29 | 1995-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-29 | 1998-12-29 | 1999-06-30 | $7700.00 | Window Closed / Lapsed |