US4536447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treated glass fibers and aqueous dispersion and nonwoven mat of glass fibers
Assignee: PPG Industries Inc
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Filing: 1982-09-24
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Granted: 1985-08-20
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Expires: 2002-09-24
Abstract
Abstract Treated glass fibers having adequate protection for gathering into strands and when chopped being more dispersible in aqueous media. The treated glass fibers have a coating of an aqueous treating composition having nonionic surfactant and a cationic quaternary ammonium salt surfactant and one or more organo polar functional coupling agents. In addition, the aqueous treating composition can also have one or more water dispersible, emulsifiable or soluble polyols. Glass fibers treated with the aqueous treating compositions and produced into wet or dry chopped glass fiber strands having a length of 1/16 of an inch to about 3 inches, and having good dispersibility in aqueous media with or without addition of dispersing agents. Nonwoven, sheet-like mat produced from aqueous dispersions having the chopped treated glass fibers, where an amount of water is removed usually by vacuum, suction or thermal means and where polymeric binders, commonly referred to as wet strength binders, are applied and the mat is cured. The resulting nonwoven, sheet-like mat product has very good strength properties for use as a reinforcing element for roofing products, construction products and flooring products.
Inventors
- 👤 Ed C. Hsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:11
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/25; D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/40; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
84 words
Chopped glass fibers having an aqueous chemical treating composition consisting essentially of: a nonionic surfactant, b. cationic quaternary ammonium salt surfactant, where the ratio of the nonionic to cationic surfactants is about 1 to about 99 to about 99 to 1, c. polar functional coupling agent selected from the group consisting of organo metallic and organo-silane coupling agents having polar organic functionalities, and d. water in an amount to give a total solids content that is effective for applying the composition to glass fibers.
Claim 2
Dependent Claim
84 words
Chopped glass fibers having an aqueous chemical treating composition consisting essentially of: a nonionic surfactant, b. cationic quaternary ammonium salt surfactant, where the ratio of the nonionic to cationic surfactants is about 1 to about 99 to about 99 to 1, c. polar functional coupling agent selected from the group consisting of organo metallic and organo-silane coupling agents having polar organic functionalities, and d. water in an amount to give a total solids content that is effective for applying the composition to glass fibers.
Claim 3
Dependent Claim
31 words
Glass fibers of claim 1, wherein in the composition the amount of nonionic surfactant is in the range of about 0.1 to about 5 weight percent of the aqueous treating composition.
Claim 4
Dependent Claim
34 words
Glass fibers of claim 1, wherein in the composition the amount of cationic quaternary ammonium salt surfactant is in the range of about 0.1 to about 5 weight percent of the aqueous treating composition.
Claim 5
Dependent Claim
33 words
Glass fibers of claim 1, wherein in the composition the amount of polar functional coupling agent is in the range of about 0.01 to about 2 weight percent of the aqueous treating composition.
Claim 6
Dependent Claim
26 words
Glass fibers of claim 1 where the composition has water soluble, dispersible or emulsifiable polyols in an amount to provide sufficient protection to the glass fibers.
Claim 7
Dependent Claim
24 words
Glass fibers of claim 1, wherein the composition has a total solids content in the range of about 0.5 to about 5 weight percent.
Claim 8
Dependent Claim
30 words
Glass fibers of claims 1 or 5, wherein in the composition the nonionic and cationic surfactants are used as a blend in a ratio of about 3:1 to about 1:3.
Claim 9
Dependent Claim
92 words
Glass fibers of claims 1 or 5, wherein in the composition nonionic surfactant is selected from polyoxyalkylene surfactants, alkoxylated alkyl phenols, linear substituted alkyl phenols and branch-chain substituted alkyl phenols, alkoxylated aliphatic alcohols, carboxylic esters, fatty acid esters of either mono or di glycerides of fatty acids, fatty acids and/or esters of sorbitan and the polyoxy alkylene derivatives of sorbitan fatty acid esters, glycol esters of fatty acids, anhydrosorbitol esters, and alkoxylated anhydrous sorbitol esters and alkoxylated natural fats oils and waxes, polyalkylene oxide block copolers and polysiloxane-polyoxyalkylene copolymers and mixtures thereof.
Claim 10
Dependent Claim
27 words
Glass fibers of claim 7, wherein in the composition the nonionic surfactant is a fatty ester and the cationic surfactant is a fatty methosulfate quaternary ammonium salt.
Claim 11
Dependent Claim
28 words
Glass fibers of claim 5, wherein the polyol has a viscosity greater than 30,000 centistokes at 100° F. (38° C.) and 1,000 centistokes at 210° F. (99° C.).
Claim 12
Dependent Claim
29 words
Glass fibers of claim 5, wherein in the composition the polyol is selected from the group consisting of alkylene glycols, dialkylene glycols, and triols, polyalkylene polyols and polyoxyalkylene polyols.
Claim 13
Dependent Claim
29 words
Glass fibers of claim 5, wherein in the composition the amount of the polyols is in the range of 0.1 to 10 weight percent of the aqueous treating composition.
Claim 14
Dependent Claim
18 words
Glass fibers of claim 1, wherein in the composition the polar functional silane coupling agent is gamma glycidoxypropyltrimethoxysilane.
Claim 15
Dependent Claim
120 words
Glass fibers of claims 1 or 5, wherein in the composition the cationic quaternary ammonium salt lubricating surfactant is selected from the group consisting of quaternary ammonium salts having the formula [RNR 1 R 2 ]+X where one or more but not all of R, R 1 and R 2 can be selected from the compounds such as stearyl, tallow, cetyl, lauryl, myristyl, alkyl, alkyl with 8 to 18 carbon atoms, tetradecyl, dodecyl phenyl, alkyl phenyl, isohexadecyl, and where the other R, R 1 or R 2 are lower alkyls having carbon atoms up to and including 6 and alkyl phenyls and X is an anionic group selected from chloro, fluoro, ido, bromo, hydroxyl, nitrate, sulfate, phosphate and toluene sulfonate.
Claim 16
Dependent Claim
39 words
Glass fibers of claims 1 or 5, wherein in the composition there is present one or more water soluble or dispersible nonpolymeric amide compound in an amount of about 0.1 to about 2 weight percent of the aqueous composition.
Claim 17
Dependent Claim
27 words
Glass fibers of claim 1, wherein the amount of the treating composition on the glass fibers is in the range of 0.01 to about 1.5 weight percent.
Claim 18
Dependent Claim
14 words
Glass fibers of claim 1 having a dried residue of the aqueous treating composition.
Claim 19
Dependent Claim
20 words
Glass fibers of claim 1, wherein the nonionic surfactant has a HLB in the range of less than around 10.
References Cited (Backward Citations)
US3850869A
Cited
US3869308A
Cited
US4002445A
Cited
US4052256A
Cited
US4110094A
Cited
US4052257A
Cited
US3997306A
Cited
US4118272A
Cited
US4179331A
Cited
US4178203A
Cited
US4178204A
Cited
US4178206A
Cited
EP0003475A1
Cited
US4183782A
Cited
US4284470A
Cited
US4185138A
Cited
US4265704A
Cited
US4274916A
Cited
US4370169A
Cited
US4390647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-19 | 1989-02-18 | 1989-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-19 | 1993-02-18 | 1993-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-19 | 1997-02-18 | 1997-08-20 | $7700.00 | Window Closed / Lapsed |