US4052256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of dispersing glass fibers using a linear polysiloxane and dispersion obtained thereby
Assignee: Owens Corning
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Filing: 1976-02-04
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Granted: 1977-10-04
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Expires: 1996-02-04
Abstract
Abstract Dispersions of glass fibers are produced by agitating a mixture comprising water, glass fibers and a water solution of a linear polysiloxane containing at least 6 silicon atoms, each of said silicon atoms having 2 non-hydrolyzable oleophilic groups attached thereto.
Inventors
- 👤 Laurent C. Renaud
- 👤 Clarence W. Charon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:21
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/1254; D21H13/00; D21H13/36; D21H13/38; D21H13/40; D21H17/00; D21H17/03; D21H17/05; D21H17/13; Y; Y10; Y10S; Y10S162/00; Y10S162/03
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
61 words
In the process of dispersing glass fibers in an aqueous solution, the improvement comprising: vigorously agitating a mixture comprising water, glass fibers and an effective amount of a water solution of a linear polysiloxane containing at least 6 silicon atoms, each of said silicon atoms having 2 non-hydrolyzable oleophilic groups attached thereto, to uniformly disperse said glass fibers in said water.
Claim 2
Dependent Claim
61 words
In the process of dispersing glass fibers in an aqueous solution, the improvement comprising: vigorously agitating a mixture comprising water, glass fibers and an effective amount of a water solution of a linear polysiloxane containing at least 6 silicon atoms, each of said silicon atoms having 2 non-hydrolyzable oleophilic groups attached thereto, to uniformly disperse said glass fibers in said water.
Claim 3
Dependent Claim
20 words
The process of claim 1 in which said polysiloxane is selected from the group consisting of dimethylpolysiloxane, methylpropylpolysiloxane and methacryloxypropyltrimethoxysilane.
Claim 4
Dependent Claim
12 words
The process of claim 1 in which said mixture comprises an acid.
Claim 5
Dependent Claim
14 words
The process of claim 1 in which said mixture comprises clays or hexametaphosphate salts.
Claim 6
Dependent Claim
50 words
An aqueous dispersion consisting essentially of: a. water; b. glass fibers; c. cellulose fibers; and, d. an effective amount of a linear polysiloxane, containing at least 6 silicon atoms and having 2 non-hydrolyzable oleophilic groups affixed to each of said silicon atoms, to hold said fibers dispersed throughout the water.
Claim 7
Dependent Claim
50 words
An aqueous dispersion consisting essentially of: a. water; b. glass fibers; c. cellulose fibers; and, d. an effective amount of a linear polysiloxane, containing at least 6 silicon atoms and having 2 non-hydrolyzable oleophilic groups affixed to each of said silicon atoms, to hold said fibers dispersed throughout the water.
References Cited (Backward Citations)
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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) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |