US4477524A
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: 1982-09-23
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Granted: 1984-10-16
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Expires: 2002-09-23
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
2026-11-05 03:26
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; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/20; C08G77/22; C08G77/28; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2962; Y10T428/2964; Y10T428/2967
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
106 words
Wet chopped glass fiber strand produced by attenuating glass fibers from molten cones of glass from a bushing, sizing the glass fibers with an aqueous sizing composition, gathering the fibers into one or more strands and chopping the glass fiber strands to produce wet chopped glass fiber strands, THE IMPROVEMENT COMPRISING: a. sizing the glass fibers with an aqueous sizing composition having at least a cationic lubricant, cationic curable silicon polymer emulsion and amide compound that is water soluble or dispersible to control the moisture content of the wet chopped glass fiber strands in the range of at least about 9 to about 20 weight percent.
Claim 2
Dependent Claim
106 words
Wet chopped glass fiber strand produced by attenuating glass fibers from molten cones of glass from a bushing, sizing the glass fibers with an aqueous sizing composition, gathering the fibers into one or more strands and chopping the glass fiber strands to produce wet chopped glass fiber strands, THE IMPROVEMENT COMPRISING: a. sizing the glass fibers with an aqueous sizing composition having at least a cationic lubricant, cationic curable silicon polymer emulsion and amide compound that is water soluble or dispersible to control the moisture content of the wet chopped glass fiber strands in the range of at least about 9 to about 20 weight percent.
Claim 3
Dependent Claim
106 words
Chopped glass fiber strand formed by the wet chopped glass fiber forming process having an aqueous sizing composition for glass fibers, comprising: a. one or more cationic lubricants, b. water soluble or dispersible amide compound selected from the group consisting of monoamides, diamides, melamine, diamides of saturated dicarboxylic acids, carbamides, nonpolymeric 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 silicone emulsion.
Claim 4
Dependent Claim
106 words
Chopped glass fiber strand formed by the wet chopped glass fiber forming process having an aqueous sizing composition for glass fibers, comprising: a. one or more cationic lubricants, b. water soluble or dispersible amide compound selected from the group consisting of monoamides, diamides, melamine, diamides of saturated dicarboxylic acids, carbamides, nonpolymeric 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 silicone emulsion.
Claim 5
Dependent Claim
20 words
Glass fiber strand of claim 2, wherein the cationic, curable, silicone polymer emulsion has the infrared spectrum of FIG. 1.
Claim 6
Dependent Claim
25 words
Glass fiber strand of claim 2, wherein the cationic lubricant is present in an amount in the range of about 0.2 to 3 weight percent.
Claim 7
Dependent Claim
29 words
Glass fiber strand of claim 2, wherein the water soluble or dispersible amide compound is present in an amount in the range of about 0.2 to 2 weight percent.
Claim 8
Dependent Claim
30 words
Glass fiber strand of claim 2, 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 9
Dependent Claim
23 words
Glass fiber strand of claim 2, wherein the cationic lubricant is an alkyl imidazoline reaction product of a tetraethylene pentamine and stearic acid.
Claim 10
Dependent Claim
16 words
Glass fiber strand of claim 2, wherein the water soluble or dispersible amide compound is urea.
Claim 11
Dependent Claim
25 words
Glass fiber strand of claim 2, wherein the cationic curable silicone polymer in aqueous emulsion is an amine functional silicone polymer in an aqueous emulsion.
Claim 12
Dependent Claim
31 words
Glass fiber strand of claim 2, wherein the moisture content of the wet chopped glass fiber strand is in the range of at least about 9 to about 20 weight percent.
Claim 13
Dependent Claim
33 words
Wet chopped glass fiber strand of claim 2, wherein the moisture content of the wet chopped glass fiber strand is in the range of at least about 9 to about 15 weight percent.
Claim 14
Dependent Claim
32 words
Glass fiber strand of claim 2, wherein the amount of the aqueous sizing composition present on the glass fiber strand is in the range of about 0.1 to about 0.5 percent LOI.
Claim 15
Dependent Claim
15 words
Glass fiber strand of claim 2, wherein the cationic, curable silicone polymer has carboxyl groups.
Claim 16
Dependent Claim
15 words
Glass fiber strand of claim 2, wherein the cationic curable silicone polymer has mercapto groups.
Claim 17
Dependent Claim
17 words
Glass fiber strand of claim 2, wherein the cationic, curable silicone polymer has acrylate or methacrylate groups.
Claim 18
Dependent Claim
15 words
Glass fiber strand of claim 2, which has present one or more silane coupling agents.
Claim 19
Dependent Claim
31 words
Glass fiber strand of claim 2, wherein the one or more silane coupling agents are selected from the group consisting of vinyl tris(2-methoxy silane), lubricant modified gamma-aminopropyltriethoxy silane, and gamma-glycidoxypropyltrimethoxy silane.
Claim 20
Dependent Claim
108 words
Continuous glass fiber strands having an aqueous sizing composition comprising: a. film former selected from the group consisting of starch and polyvinyl acetate, b. one or more cationic lubricants, c. water soluble or dispersible amide compound selected from the group consisting of monoamides, diamides, melamine, diamides of saturated dicarboxylic acids, carbamides, non-polymeric amine-containing amides and mixtures thereof, d. curable silicone polymer in a cationic aqueous emulsion, and e. 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 the cationic lubricant and silicone emulsion.
Claim 21
Dependent Claim
108 words
Continuous glass fiber strands having an aqueous sizing composition comprising: a. film former selected from the group consisting of starch and polyvinyl acetate, b. one or more cationic lubricants, c. water soluble or dispersible amide compound selected from the group consisting of monoamides, diamides, melamine, diamides of saturated dicarboxylic acids, carbamides, non-polymeric amine-containing amides and mixtures thereof, d. curable silicone polymer in a cationic aqueous emulsion, and e. 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 the cationic lubricant and silicone emulsion.
Claim 22
Dependent Claim
25 words
Glass fiber strand of claim 18, wherein the cationic lubricant is present in an amount in the range of about 0.2 to 3 weight percent.
Claim 23
Dependent Claim
29 words
Glass fiber strand of claim 18, wherein the water soluble or dispersible amide compound is present in an amount in the range of about 0.2 to 2 weight percent.
Claim 24
Dependent Claim
30 words
Glass fiber strand of claim 18, 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 25
Dependent Claim
16 words
Glass fiber strand of claim 18, wherein the water soluble or dispersible amide compound is urea.
Claim 26
Dependent Claim
31 words
Glass fiber strand of claim 18, wherein the moisture content of the wet chopped glass fiber strand is in the range of at least about 9 to about 20 weight percent.
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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |