US4381199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersion of glass fibers and method and composition for producing same
Assignee: PPG Industries Inc
•
Filing: 1981-10-16
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Granted: 1983-04-26
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Expires: 2001-10-16
Abstract
Abstract A uniform, stable low foam aqueous dispersion of glass fibers can be accomplished with the present invention. This accomplishment is obtained by the use of a unique combination of an alkyl sulfate quaternary salt of an alkyl amino fatty amine or amide and a water dispersible, liquid mineral oil, inorganic silica defoaming agent. The blend of the dispersing agent and the defoaming agent can be present on the glass fibers to be dispersed in the liquid solution or can be added to the aqueous solution prior to the addition of the glass fibers.
Inventors
- 👤 Roy R. Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:13
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/40; C; C03; C03C; C03C25/00; C03C25/10; C03C25/465; C04; C04B; C04B30/00; C04B30/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
111 words
Glass fibers having filament diameters larger than around 13 microns that are readily dispersible in aqueous solutions having thereon an aqueous sizing composition, comprising: a. about 0.1 to about 50 weight percent of a blend of alkyl sulfate quaternary of an alkyl amino fatty acid amine or amide and a liquid mineral oil-inorganic silica defoaming agent made water dispersible with a compatible surfactant, where the amount of the quaternary material is in the range of about 50 to about 95 weight percent of the blend and the amount of the defoaming agent is around 5 to about 50 weight percent of the blend; b. a glass fiber lubricant; and c. water.
Claim 2
Dependent Claim
111 words
Glass fibers having filament diameters larger than around 13 microns that are readily dispersible in aqueous solutions having thereon an aqueous sizing composition, comprising: a. about 0.1 to about 50 weight percent of a blend of alkyl sulfate quaternary of an alkyl amino fatty acid amine or amide and a liquid mineral oil-inorganic silica defoaming agent made water dispersible with a compatible surfactant, where the amount of the quaternary material is in the range of about 50 to about 95 weight percent of the blend and the amount of the defoaming agent is around 5 to about 50 weight percent of the blend; b. a glass fiber lubricant; and c. water.
Claim 3
Dependent Claim
33 words
Glass fibers of claim 1 having filament diameters less than 13 microns to produce chopped glass fibers that are more readily dispersible in aqueous solution, that in addition have present a film former.
Claim 4
Dependent Claim
15 words
Glass fibers of claim 1 or 2 wherein there is present a silane coupling agent.
Claim 5
Dependent Claim
14 words
Glass fibers of claim 1 or 2 wherein there is present a cationic lubricant.
Claim 6
Dependent Claim
15 words
Glass fibers of claim 1 or 2 having present a thickening or viscosity building agent.
Claim 7
Dependent Claim
8 words
Dried glass fibers of claims 1 or 2.
Claim 8
Dependent Claim
46 words
Glass fibers of claims 1 or 2, wherein the blend of quaternary material and defoaming agent has about 5 to about 95 weight percent of the blend as the quaternary material and about 5 to about 25 weight percent of the blend as the defoaming agent.
Claim 9
Dependent Claim
20 words
Glass fibers of claim 1 or 2 wherein the dispersing agent is diethyl sulfate quaternary of an alkyl amino oleylamide.
Claim 10
Dependent Claim
18 words
Glass fibers of claim 1 wherein the defoaming agent is one exhibiting the infrared spectrum of FIG. 2.
Claim 11
Dependent Claim
24 words
Glass fibers of claim 1 wherein the blend of the quaternary material and defoaming agent is one exhibiting the infrared spectrum of FIG. 1.
Claim 12
Dependent Claim
49 words
Glass fibers of claim 5, wherein the thickening or viscosity building agent is selected from the group consisting of carboxy methyl cellulose and soluble salts thereof, carboxy methyl hydroxy ethyl cellulose, and soluble salts thereof, and hydroxy ethyl cellulose and substituted and unsubstituted hydroxy ethyl cellulose and mixtures thereof.
Claim 13
Dependent Claim
12 words
Glass fibers of claim 2, wherein the film former is a starch.
Claim 14
Dependent Claim
41 words
Glass fibers of claims 1 or 2, wherein the defoaming agent comprised of the liquid mineral oil-inorganic silica made water dispersible with a nonionic surfactant has a colloidal silica and has an amount of silicone of less than around 0.5 percent.
Claim 15
Dependent Claim
15 words
Glass fibers of claim 1 or 2, wherein the compatible surfactant is a nonionic surfactant.
Claim 16
Dependent Claim
67 words
Glass fibers of claims 1 or 2, wherein the alkyl sulfate quaternary of an alkyl amino fatty acid or amide is diethyl sulfate quaternary of an alkyl amino oleylamide present in an amount of about 75 to about 95 weight percent of the composition when the defoaming agent is present in an amount in the range of about 5 to about 25 weight percent of the blend.
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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) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |