US3869308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forming size for glass fibers and resulting product
Assignee: PPG Industries Inc
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Filing: 1973-04-27
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Granted: 1975-03-04
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Expires: 1993-04-27
Abstract
Abstract A method of producing an improved sized glass fiber strand suitable for plastisol coating is shown wherein glass fiber strand is treated with a starch based forming size comprising a starch, the salt of a polyamino-functional polyamide resin and a carboxylic acid, a wax and a fatty triglyceride. The novel sized strands produced are particularly adapted for further coating with a resinous material, preferably a plastisol resin, to provide glass fiber strands useful for the fabrication of insect screening and filtration fabrics.
Inventors
- 👤 Roy R Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:46
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/32; C03C25/321; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2962; Y10T428/31504; Y10T428/31725
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
188 words
A method of forming an improved, sized glass fiber strand suitable for coating with a resinous material comprising: drawing glass streams through orifices in a bushing to form individual glass fibers; moving the fibers away from the bushing at a high rate of speed and forming then into a strand; applying to the fibers while they are moving at this speed and before they are formed into strand a starch based aqueous sizing solution and non-aqueous components thereof consisting essentially of 28 percent to 75 percent by weight of a starch; 4 percent to 52 percent by weight of the salt of a polyamino functional polyamide resin, said polyaminofunctional polyamide resin salt being formed from the condensation reaction product of a polycarboxcylic acid and a polyamine, said polyamine having greater than 2 amine groups per molecule, and a carboxcylic acid having 1 to 5 carbon atoms; 5 to 25 percent by weight of a wax from the group consisting of animal waxes, vegetable waxes, mineral waxes and synthetic waxes; and 9 percent to 77 percent by weight of a fatty triglyceride; and collecting the glass strands so produced.
Claim 2
Independent Claim
188 words
A method of forming an improved, sized glass fiber strand suitable for coating with a resinous material comprising: drawing glass streams through orifices in a bushing to form individual glass fibers; moving the fibers away from the bushing at a high rate of speed and forming then into a strand; applying to the fibers while they are moving at this speed and before they are formed into strand a starch based aqueous sizing solution and non-aqueous components thereof consisting essentially of 28 percent to 75 percent by weight of a starch; 4 percent to 52 percent by weight of the salt of a polyamino functional polyamide resin, said polyaminofunctional polyamide resin salt being formed from the condensation reaction product of a polycarboxcylic acid and a polyamine, said polyamine having greater than 2 amine groups per molecule, and a carboxcylic acid having 1 to 5 carbon atoms; 5 to 25 percent by weight of a wax from the group consisting of animal waxes, vegetable waxes, mineral waxes and synthetic waxes; and 9 percent to 77 percent by weight of a fatty triglyceride; and collecting the glass strands so produced.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the size contains 1.5 percent to 20 percent by weight of a coupling agent.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein the fatty triglyceride is hydrogenated corn oil.
Claim 5
Dependent Claim
11 words
The method of claim 1 wherein the starch is distarch phosphate.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein the carboxylic acid is acetic acid.
Claim 7
Dependent Claim
11 words
The method of claim 1 wherein the wax is paraffin wax.
Claim 8
Dependent Claim
19 words
The method of claim 1 wherein the size contains 10 to 45 percent by weight of an alkyl imidazoline.
Claim 9
Dependent Claim
143 words
AN IMPROVED GLASS FIBER STRAND SUITABLE FOR THE APPLICATION OF RESIN THERETO AND HAVING DISPOSED ON THE GLASS FIBERS AN AMOUNT FROM ABOUT 0.80 PERCENT TO ABOUT 2.5 PERCENT BY WEIGHT OF THE GLASS, THE DRIED RESIDUE OF AN AQUEOUS SIZE CONSISTING ESSENTIALLY OF 28 PERCENT TO 75 PERCENT BY WEIGHT OF A STARCH; 4 PERCENT TO 52 PERCENT BY WEIGHT OF THE SALT OF A POLYAMINOFUNCTIONAL POLYAMIDE RESIN, SAID POLYAMINOFUNCTIONAL POLYAMIDE RESIN SALT BEING FORMED FROM THE CONDENSATION REACTION PRODUCT OF A POLYCARBOXYCLIC ACID AND A POLYAMINE, SAID POLYAMINE HAVING GREATER THAN 2 AMINO GROUPS PER MOLECULE AND THE CARBOXYCLIC ACID HAVING 1 TO 5 CARBON ATOMS; 5 TO 25 PERCENT BY WEIGHT OF A WAX FROM THE GROUP CONSISTING OF ANIMAL WAXES, VEGETABLE WAXES, MINERAL WAXES AND SYNTHETIC WAXES AND 9 PERCENT TO 77 PERCENT BY WEIGHT OF A FATTY TRIGLYCERIDE.
Claim 10
Dependent Claim
143 words
AN IMPROVED GLASS FIBER STRAND SUITABLE FOR THE APPLICATION OF RESIN THERETO AND HAVING DISPOSED ON THE GLASS FIBERS AN AMOUNT FROM ABOUT 0.80 PERCENT TO ABOUT 2.5 PERCENT BY WEIGHT OF THE GLASS, THE DRIED RESIDUE OF AN AQUEOUS SIZE CONSISTING ESSENTIALLY OF 28 PERCENT TO 75 PERCENT BY WEIGHT OF A STARCH; 4 PERCENT TO 52 PERCENT BY WEIGHT OF THE SALT OF A POLYAMINOFUNCTIONAL POLYAMIDE RESIN, SAID POLYAMINOFUNCTIONAL POLYAMIDE RESIN SALT BEING FORMED FROM THE CONDENSATION REACTION PRODUCT OF A POLYCARBOXYCLIC ACID AND A POLYAMINE, SAID POLYAMINE HAVING GREATER THAN 2 AMINO GROUPS PER MOLECULE AND THE CARBOXYCLIC ACID HAVING 1 TO 5 CARBON ATOMS; 5 TO 25 PERCENT BY WEIGHT OF A WAX FROM THE GROUP CONSISTING OF ANIMAL WAXES, VEGETABLE WAXES, MINERAL WAXES AND SYNTHETIC WAXES AND 9 PERCENT TO 77 PERCENT BY WEIGHT OF A FATTY TRIGLYCERIDE.
Claim 11
Dependent Claim
24 words
The strand of claim 8 wherein the dried residue on the strand contains 1.5 percent to 20 percent by weight of a coupling agent.
Claim 12
Dependent Claim
12 words
The strand of claim 9 wherein the coupling agent is gammamethacryloxypropyltrimethoxy silane.
Claim 13
Dependent Claim
13 words
The strand of claim 8 wherein the fatty triglyceride is hydrogenated corn oil.
Claim 14
Dependent Claim
11 words
The strand of claim 8 wherein the starch is distarch phosphate.
Claim 15
Dependent Claim
12 words
The strand of claim 8 wherein the carboxylic acid is acetic acid.
Claim 16
Dependent Claim
19 words
The strand of claim 8 wherein the size contains 10 to 45 percent by weight of an alkyl imidazoline.
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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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |