US4146529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of modified polyolefin
Assignee: Tonen General Sekiyu KK
•
Filing: 1977-09-29
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Granted: 1979-03-27
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Expires: 1997-09-29
Abstract
Abstract A process for the production of modified polyolefins by combining a polyolefin with one or more carboxylic acids or their anhydrides in the presence of a radical producing agent in an extruder and in the presence of an organosilane. If desired glass fibers can also be incorporated at the same time.
Inventors
- 👤 Noboru Yamamoto
- 👤 Masaaki Isoi
- 👤 Maoto Yoda
- 👤 Shozo Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:22
CPC Classifications
C; C08; C08F; C08F255/00; C08F8/00; C08F8/42
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
92 words
In a process for the production of polyolefins modified during an addition reaction with one or more alicyclic carboxylic acids having a cis form non-conjugated double bond, alpha beta unsaturated carboxylic acids or their anhydrides and optionally untreated or silane pretreated glass fibers in the presence of a radical producing agent in an extruder, the improvement which comprises reacting the modified polyolefin in the molten state with an effective amount of an aminosilane or epoxysilane whereby unreacted unsaturated carboxylic acids or anhydrides remaining in the modified polyolefin are fixed into the polyolefin.
Claim 2
Dependent Claim
92 words
In a process for the production of polyolefins modified during an addition reaction with one or more alicyclic carboxylic acids having a cis form non-conjugated double bond, alpha beta unsaturated carboxylic acids or their anhydrides and optionally untreated or silane pretreated glass fibers in the presence of a radical producing agent in an extruder, the improvement which comprises reacting the modified polyolefin in the molten state with an effective amount of an aminosilane or epoxysilane whereby unreacted unsaturated carboxylic acids or anhydrides remaining in the modified polyolefin are fixed into the polyolefin.
Claim 3
Dependent Claim
20 words
The process according to claim 1 wherein the modified polyolefin is reacted with the organosilane compound during the addition reaction.
Claim 4
Dependent Claim
20 words
The process according to claim 1 wherein the modified polyolefin is reacted with the organosilane compound after the addition reaction.
Claim 5
Dependent Claim
21 words
The process according to claim 1 wherein the organosilane compound is selected from the group consisting of γ-aminopropyltriethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and N-(β-aminoethyl)-γ-aminopropyl-methyldimethoxysilane.
Claim 6
Dependent Claim
21 words
The process according to claim 1 wherein the organosilane compound is selected from the group consisting of β-(3, 4-epoxycyclohexyl)-ethyltrimethoxysilane and γ-glycidoxypropyl-trimethoxysilane.
Claim 7
Dependent Claim
102 words
In a process for the production of modified polyolefins by combining a polyolefin with one or more alicyclic carboxylic acids having a cis form non-conjugated double bond, alpha beta unsaturated carboxylic acids and their anhydrides and optionally untreated or silane pretreated glass fibers in the presence of a radical producing agent in an extruder, the improvement which comprises reacting the modified polyolefin in the molten state with an aminosilane or an epoxysilane wherein the organosilane compound is added in the proportion of about 0.1 to about 4.0 molar equivalents relative to all the carboxylic acid or anhydride thereof in the modified polyolefin.
Claim 8
Dependent Claim
102 words
In a process for the production of modified polyolefins by combining a polyolefin with one or more alicyclic carboxylic acids having a cis form non-conjugated double bond, alpha beta unsaturated carboxylic acids and their anhydrides and optionally untreated or silane pretreated glass fibers in the presence of a radical producing agent in an extruder, the improvement which comprises reacting the modified polyolefin in the molten state with an aminosilane or an epoxysilane wherein the organosilane compound is added in the proportion of about 0.1 to about 4.0 molar equivalents relative to all the carboxylic acid or anhydride thereof in the modified polyolefin.
Claim 9
Dependent Claim
36 words
The process according to claim 6 wherein the aminosilane or epoxysilane is added in the proportion of about 0.2 to about 2.0 molar equivalents relative to the carboxylic acid or anhydride present in the modified polyolefin.
Claim 10
Dependent Claim
72 words
In a process for the production of modified polyolefins by combining a polyolefin with one or more alicyclic carboxylic acids having a cis form non-conjugated double bond, alpha beta unsaturated carboxylic acids and their anhydrides in the presence of a radical producing agent in an extruder, the improvement which comprises adding untreated or silane pretreated glass fibers and reacting the modified polyolefin in the molten state with an aminosilane or an epoxysilane.
Claim 11
Dependent Claim
72 words
In a process for the production of modified polyolefins by combining a polyolefin with one or more alicyclic carboxylic acids having a cis form non-conjugated double bond, alpha beta unsaturated carboxylic acids and their anhydrides in the presence of a radical producing agent in an extruder, the improvement which comprises adding untreated or silane pretreated glass fibers and reacting the modified polyolefin in the molten state with an aminosilane or an epoxysilane.
Claim 12
Dependent Claim
15 words
The process according to claim 1, wherein the modified polyolefin contains silane pretreated glass fibers.
Claim 13
Dependent Claim
14 words
The process according to claim 1, wherein the modified polyolefin contains untreated glass fibers.
Claim 14
Dependent Claim
15 words
The process according to claim 6, wherein the modified polyolefin contains silane pretreated glass fibers.
Claim 15
Dependent Claim
14 words
The process according to claim 6, wherein the modified polyolefin contains untreated glass fibers.
Claim 16
Dependent Claim
15 words
The process according to claim 8, wherein the modified polyolefin contains silane pretreated glass fibers.
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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |