US3855175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing novel glass fiber reinforced thermoplastic composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1973-10-24
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Granted: 1974-12-17
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Expires: 1993-10-24
Abstract
Abstract Glass fiber reinforced thermoplastic compositions are formed by treating 5 - 60 percent by weight of glass fibers with 0.01 - 1.0 percent by weight based on the weight of said fibers, of an organosilane selected from the group consisting of epoxy silanes and amino silanes, admixing said treated fibers with 95 to 40 weight percent of polypropylene, and 0.1 to 5.0 percent by weight of an organosilane coupling agent selected from the group consisting of vinyl silanes, methacryl silanes, epoxy silanes, amine silanes and mixtures thereof, and melt-shaping the resulting mixture.
Inventors
- 👤 T Kakizaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:51
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40; C08J2323/00; C08J2323/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
123 words
A PROCESS FOR PREPARINGG A GLASS FIBRE REINFORCED THERMOPLASTIC COMPOSITION WHICH COMPRISES TREATING 5-60 PERCENT BY WEIGHT OF GLASS WITH 0.01 -1.0 PERCENT BY WEIGHT BASED ON THE WEIGHT OF SAID FIBRES, OF AN ORGANOSILACE SELECTED FROM THE GROUP CONSISTING OF BIS (B-HYDROXYETHYL)-Y-AMINOPROPYLTRIETHOXYSILANE, B(3,4-EPOXYCYCLOHEXYL) -ETHYLTRIMERTHOXYSILANE, YGLYCIDYLOXYPROPYLTRIMETHOXYSILANE, YAMINOPROPYLTRIETHOXYSILANE, N-B-(DIMETHOXYMETHYL)-YAMINOPROPYLTRIETHOXYSILANE, AND N-(DIMETHOXYMETHYL SILYPROPYL) ETHYLENE DIAMINE, ADMIXING SAID TREATED FIBERS WITH 95 TO 40 WEIGHT PERCENT OF POLYPROPYLENE, AND 0.01-0.5 PERCENT BY WEIGHT OF A PEROXIDE, AND 0.1 TO 5.0 PERCENT BY WEIGHT OF AN ORGABOSILANE COUPLING AGENT SELECTED FROM THE GROUP CONSISTINGG OF VINCYLTRIETHOXYSILANE, VINCYLTRICHLOROSILANE, VINCYL-TRIS (BMETHOXYETHOXY)SILANE, YMETHARYLOXYPROPYLTRIMETHOXYSILANE, B-(3,4EPOXYCYCLOHEXYL) -ETHYLTRIMETHOXYSILANE, YGLYCIDYLOXPROPYL-TRIMETHOXYYSILANE, YAMINOPROPYLTRIETHOXYSILANE, N-B (AMINOETHYL)-RAMINOPROPYLTRIMETHOXYSILANE, BIS (Y-HYDROXYMETHYLYAMINOPROPYLTRIETHOXYLIANE, YCHLOROPROPYLMETHOXYLIANE, YMERCAPTOPROPYLMETHOXYSILANE, N-(DIMETHYOXYMETHYL SILYLPROPYL) ETHYLENE DIAMINE YCHLOROOISOBUTYLTRIETHOXYLIANE, BCYCLOHEXYLETHYLTRIMETHOXYLIANE, PHENYLTRIETHOXYSILANE, AMYLTRIMETHOXYSILANE, VINYLTRIMETHOXYSILANE, AND MIXTURES THEREOF, AND MELT-SHAPINH THE RESULTING MIXTURES.
Claim 2
Dependent Claim
123 words
A PROCESS FOR PREPARINGG A GLASS FIBRE REINFORCED THERMOPLASTIC COMPOSITION WHICH COMPRISES TREATING 5-60 PERCENT BY WEIGHT OF GLASS WITH 0.01 -1.0 PERCENT BY WEIGHT BASED ON THE WEIGHT OF SAID FIBRES, OF AN ORGANOSILACE SELECTED FROM THE GROUP CONSISTING OF BIS (B-HYDROXYETHYL)-Y-AMINOPROPYLTRIETHOXYSILANE, B(3,4-EPOXYCYCLOHEXYL) -ETHYLTRIMERTHOXYSILANE, YGLYCIDYLOXYPROPYLTRIMETHOXYSILANE, YAMINOPROPYLTRIETHOXYSILANE, N-B-(DIMETHOXYMETHYL)-YAMINOPROPYLTRIETHOXYSILANE, AND N-(DIMETHOXYMETHYL SILYPROPYL) ETHYLENE DIAMINE, ADMIXING SAID TREATED FIBERS WITH 95 TO 40 WEIGHT PERCENT OF POLYPROPYLENE, AND 0.01-0.5 PERCENT BY WEIGHT OF A PEROXIDE, AND 0.1 TO 5.0 PERCENT BY WEIGHT OF AN ORGABOSILANE COUPLING AGENT SELECTED FROM THE GROUP CONSISTINGG OF VINCYLTRIETHOXYSILANE, VINCYLTRICHLOROSILANE, VINCYL-TRIS (BMETHOXYETHOXY)SILANE, YMETHARYLOXYPROPYLTRIMETHOXYSILANE, B-(3,4EPOXYCYCLOHEXYL) -ETHYLTRIMETHOXYSILANE, YGLYCIDYLOXPROPYL-TRIMETHOXYYSILANE, YAMINOPROPYLTRIETHOXYSILANE, N-B (AMINOETHYL)-RAMINOPROPYLTRIMETHOXYSILANE, BIS (Y-HYDROXYMETHYLYAMINOPROPYLTRIETHOXYLIANE, YCHLOROPROPYLMETHOXYLIANE, YMERCAPTOPROPYLMETHOXYSILANE, N-(DIMETHYOXYMETHYL SILYLPROPYL) ETHYLENE DIAMINE YCHLOROOISOBUTYLTRIETHOXYLIANE, BCYCLOHEXYLETHYLTRIMETHOXYLIANE, PHENYLTRIETHOXYSILANE, AMYLTRIMETHOXYSILANE, VINYLTRIMETHOXYSILANE, AND MIXTURES THEREOF, AND MELT-SHAPINH THE RESULTING MIXTURES.
Claim 3
Dependent Claim
20 words
The process of claim 1, wherein said peroxide is benzoylperoxide, said organosilane admixed with the polypropylene resin is gamma -methacryloxypropyltrimethoxysilane.
Claim 4
Dependent Claim
16 words
The process of claim 1, wherein said organosilane admixed with the polypropylene resin is gamma -methacryloxypropyltrimethoxysilane.
Claim 5
Dependent Claim
19 words
The process of claim 1, wherein the peroxide is present in an amount of about 0.1 percent by weight.
Claim 6
Dependent Claim
22 words
The process of claim 1, wherein the peroxide is selected from the group consisting of benzoylperoxide, di-cumylperoxide and gamma , gamma ''-bis(t-butylperoxy)p-diisopropylbenzene.
Claim 7
Dependent Claim
34 words
The process of claim 1, wherein the glass fiber is treated with gamma -glycidyloxypropyl-trimethoxysilane and the organosilane coupling agent is selected from the group consisting of gamma -methacryloxypropyl-trimethoxysilane and N- Beta -(aminoethyl)- gamma -aminopropyl-trimethoxysilane.
Claim 8
Dependent Claim
36 words
The process of claim 1, wherein the glass fibers are chopped stranded having a diameter of 5-13 microns and up to 10 millimeters in length or a ribbon having a diameter of 5 to 13 microns.
Claim 9
Dependent Claim
18 words
The process of claim 1, wherein the polypropylene is a polypropylene powder having a melt index of 4-25.
Claim 10
Dependent Claim
30 words
The process of claim 1, wherein the glass fiber is present in the amount of from 5 to 40 percent by weight based on the weight of the total composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |