Patent US4394414A successfully refreshed from Google Patents.
US4394414A
Expired / Lapsed
US
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Aqueous sizing composition for glass fibers for use on chopped glass fibers
Assignee: PPG Industries Ohio Inc
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Filing: 1981-05-29
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Granted: 1983-07-19
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Expires: 2001-05-29
Abstract
Abstract An aqueous sizing composition having a cationic lubricant, amide compound, and cationic silicone polymer aqueous emulsion which is used to produce wet chopped sized glass fiber strands or which also has a film former to produce continuous glass fiber strands. The moisture content of the wet chopped glass fiber strands is controlled to within about 9 to about 20 weight percent. The sized wet chopped glass fiber strands have good flowability and when used to produce non-woven glass fiber strand mat, produces mat with good flexibility and tensile strength.
Inventors
- 👤 Daniel G. Brown
- 👤 Donald L. Motsinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:50
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/40; C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C08; C08K; C08K5/00; C08K5/16; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964; Y10T442/00; Y10T442/60; Y10T442/603; Y10T442/604
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
90 words
An aqueous sizing composition for glass fibers, comprising: a. one or more cationic lubricants, b. water soluble or dispersible amide selected from the group consisting of monoamides, diamides, melamine, diamides of saturated dicarboxylic acids, carbamides, non-polymeric amine-containing amides and mixtures thereof, c. curable silicone polymer in a cationic aqueous emulsion; and d. water in an amount to give a solids content in the range of about 0.1 to about 5 weight percent wherein the major amount of the solids of the sizing composition is comprised of cationic lubricant and emulsion.
Claim 2
Dependent Claim
90 words
An aqueous sizing composition for glass fibers, comprising: a. one or more cationic lubricants, b. water soluble or dispersible amide selected from the group consisting of monoamides, diamides, melamine, diamides of saturated dicarboxylic acids, carbamides, non-polymeric amine-containing amides and mixtures thereof, c. curable silicone polymer in a cationic aqueous emulsion; and d. water in an amount to give a solids content in the range of about 0.1 to about 5 weight percent wherein the major amount of the solids of the sizing composition is comprised of cationic lubricant and emulsion.
Claim 3
Dependent Claim
23 words
Glass fiber strand formed by the wet chop glass fiber forming process having the dried residue of the sizing composition of claim 1.
Claim 4
Dependent Claim
20 words
Aqueous sizing composition of claim 1 wherein the cationic, curable, silicone polymer emulsion has the infrared spectrum of FIG. 1.
Claim 5
Dependent Claim
25 words
Aqueous sizing composition of claim 1 wherein the cationic lubricant is present in an amount in the range of about 0.2 to 3 weight percent.
Claim 6
Dependent Claim
29 words
An aqueous sizing composition of claim 1 wherein the water soluble or dispersible amide is present in an amount in the range of about 0.2 to 2 weight percent.
Claim 7
Dependent Claim
30 words
Aqueous sizing composition of claim 1 wherein the cationic, curable silicone polymer aqueous emulsion is present in an amount in the range of about 0.1 to about 1 weight percent.
Claim 8
Dependent Claim
23 words
Aqueous sizing composition of claim 1 wherein the cationic lubricant is an alkyl imidazoline reaction product of a tetraethylene pentamine and stearic acid.
Claim 9
Dependent Claim
15 words
Aqueous sizing composition of claim 1 wherein the water soluble or dispersible amide is urea.
Claim 10
Dependent Claim
25 words
Aqueous sizing composition of claim 1 wherein the cationic, curable silicone polymer in aqueous emulsion is an amine functional silicone polymer in an aqueous emulsion.
Claim 11
Dependent Claim
52 words
An aqueous solution for producing non-woven glass fiber strand mat comprising about 0.5 to 1 weight percent of the glass fiber strands of claim 2 wherein the lengths of the glass fiber strands vary from 1/4 inch to 3 inches and a filament diameter in the range of 3 to 27 microns.
Claim 12
Dependent Claim
10 words
Aqueous solution of claim 10 which also includes dispersing aids.
Claim 13
Dependent Claim
19 words
Aqueous solution of claim 11 wherein the dispersing aids are selected from polyoxyethylated tallow amine and a thickening agent.
Claim 14
Dependent Claim
79 words
Aqueous solution of claim 11 wherein the dispersing aid is a blend of alkyl sulfate quaternary of an alkyl amino fatty acid amine or amide in a water dispersible, liquid, mineral oil with an inorganic silica defoaming agent wherein 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 defoaming agent is around 5 to about 50 weight percent of the blend and water.
Claim 15
Dependent Claim
13 words
Non-woven glass fiber strand mat made from the aqueous solution of claim 10.
Claim 16
Dependent Claim
20 words
Aqueous sizing composition of claim 9, wherein the silicone polymer with amine groups is present in a cationic water emulsion.
Claim 17
Dependent Claim
15 words
Aqueous sizing composition of claim 1, wherein the cationic, curable silicone polymer has carboxyl groups.
Claim 18
Dependent Claim
15 words
Aqueous sizing composition of claim 1, wherein the cationic, curable silicone polymer has mercapto groups.
Claim 19
Dependent Claim
17 words
Aqueous sizing composition of claim 1, wherein the cationic, curable silicone polymer has acrylate or methacrylate groups.
Claim 20
Dependent Claim
15 words
Aqueous sizing composition of claim 1, which has present one or more silane coupling agents.
Claim 21
Dependent Claim
31 words
Aqueous sizing composition of claim 19, wherein the one or more silane coupling agents are selected from the group consisting of vinyl tris (2-methoxysilane) lubricant modified gamma-aminopropyltriethoxy silane and gamma-glycidoxypropyltrimethoxy silane.
Claim 22
Dependent Claim
28 words
Non-woven glass fiber mat of claim 14, in contact with a polymeric binder selected from the group consisting of urea formaldehyde, anionic urea formaldehyde, and cationic urea formaldehyde.
References Cited (Backward Citations)
US2758026A
Cited
US2897170A
Cited
US3085126A
Cited
US3253978A
Cited
US3395071A
Cited
US3215585A
Cited
US3423235A
Cited
US3423314A
Cited
US3493425A
Cited
US3488217A
Cited
US3759740A
Cited
US3556754A
Cited
US3706695A
Cited
US3749638A
Cited
US3844825A
Cited
US4014726A
Cited
US3979253A
Cited
US3944702A
Cited
US4052256A
Cited
US4020212A
Cited
US4052257A
Cited
US4105567A
Cited
US4105569A
Cited
US4118272A
Cited
US4179331A
Cited
US4178203A
Cited
US4178204A
Cited
US4178206A
Cited
US4183782A
Cited
US4210697A
Cited
US4271229A
Cited
US4259190A
Cited
US4311626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |