Patent US4558094A successfully refreshed from Google Patents.
US4558094A
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Process for producing a crosslinked product of a silane grafted propylene resin
Assignee: Mitsubishi Chemical Corp
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Filing: 1983-12-15
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Granted: 1985-12-10
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Expires: 2003-12-15
Abstract
Abstract Crosslinked product of a propylene resin having practically sufficient performances such as heat resistance, impact strength, rigidity, etc. is produced by exposing a composition to water or steam in the presence of a silanol condensation catalyst to effect crosslinking, the composition being comprised of (A) 60 to 90 wt % of a modified propylene resins with an ethylenically unsaturated silane compound grafted thereon, (B) 20 to 5 wt % of an ethylene resin and (C) 20 to 5 wt % of an ethylene-α-olefin copolymer rubber.
Inventors
- 👤 Jichio Deguchi
- 👤 Takayuki Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:14
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/06
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
120 words
A process for producing a crosslinked product of a propylene resin which comprises: exposing a composition comprising (A) 60 to 90 wt % of a modified propylene resin which is prepared by grafting onto a propylene resin an ethylenically saturated silane compound represented by the formula RSiR'.sub.n Y.sub.3-n wherein R is an ethylenically unsaturated hydrocarbon group or a hydrocarbon oxy group, R' is an aliphatic saturated hydrocarbon group, and Y is a hydrolyzable organic group and n is 0, 1 or 2; (B) 20 to 5 wt % of an ethylene resin; and (C) 20 to 5 wt % of an ethylene-α-olefin copolymer rubber, to water or steam in the presence of a silanol condensation catalyst to crosslink the composition.
Claim 2
Dependent Claim
120 words
A process for producing a crosslinked product of a propylene resin which comprises: exposing a composition comprising (A) 60 to 90 wt % of a modified propylene resin which is prepared by grafting onto a propylene resin an ethylenically saturated silane compound represented by the formula RSiR'.sub.n Y.sub.3-n wherein R is an ethylenically unsaturated hydrocarbon group or a hydrocarbon oxy group, R' is an aliphatic saturated hydrocarbon group, and Y is a hydrolyzable organic group and n is 0, 1 or 2; (B) 20 to 5 wt % of an ethylene resin; and (C) 20 to 5 wt % of an ethylene-α-olefin copolymer rubber, to water or steam in the presence of a silanol condensation catalyst to crosslink the composition.
Claim 3
Dependent Claim
22 words
A process as claimed in claim 1, wherein said proplyene resin has a melt flow index of 0.7 g/10 min. or less.
Claim 4
Dependent Claim
22 words
A process as claimed in claim 1, wherein said propylene resin has a melt flow index of 0.3 g/10 min. or less.
Claim 5
Dependent Claim
23 words
A process as claimed in claim 1, wherein said ethylenically unsaturated silane compound is selected from the group consisting of vinyltriacetoxysilane and γ-methacryloyloxypropyltrimethoxysilane.
Claim 6
Dependent Claim
32 words
A process as claimed in claim 1, wherein said ethylenically unsaturated silane compound is represented by the formula CH.sub.2 ═CHSi(OA).sub.3 wherein A is a hydrocarbon group having 1 to 8 carbon atoms.
Claim 7
Dependent Claim
23 words
A process as claimed in claim 5, wherein said ethylenically unsaturated silane compound is selected from the group consisting of vinyltrimethoxysilane and vinyltriethoxysilane.
Claim 8
Dependent Claim
24 words
A process as claimed in claim 1, wherein the modified propylene resin contains 0.001 to 10 wt % of the ethylenically unsaturated silane compound.
Claim 9
Dependent Claim
24 words
A process as claimed in claim 1, wherein the modified propylene resin contains 0.01 to 10 wt % of the ethylenically unsaturated silane compound.
Claim 10
Dependent Claim
24 words
A process as claimed in claim 1, wherein the modified propylene resin contains 0.5 to 5 wt % of the ethylenically unsaturated silane compound.
Claim 11
Dependent Claim
20 words
A process as claimed in claim 1, wherein the ethylene resin has a density of 0.930 g/cm 2 or more.
Claim 12
Dependent Claim
20 words
A process as claimed in claim 1, wherein the ethylene resin has a density of 0.945 g/cm 2 or more.
Claim 13
Dependent Claim
32 words
A process as claimed in claim 1, wherein said ethylene-α-olefin copolymer rubber is selected from the group consisting of an ethylene-propylene rubber, an ethylene-propylene-diene rubber, an ethylene-butene-1 rubber and an ethylene-butene-1-diene rubber.
Claim 14
Dependent Claim
27 words
A process as claimed in claim 1, wherein at least one of the ethylene resin and ethylene-α-olefin copolymer rubber is graft-modified with the ethylenically unsaturated silane compound.
Claim 15
Dependent Claim
39 words
A process as claimed in claim 1, wherein the amounts of the modified propylene resin, ethylene resin and ethylene-α-olefin copolymer rubber are 70 to 88 wt %, 15 to 7 wt %, and 15 to 5 wt %, respectively.
Claim 16
Dependent Claim
23 words
A process as claimed in claim 1, wherein the crosslinked product of the propylene resin has a gel content of 50% or more.
Claim 17
Dependent Claim
32 words
A process as claimed in claim 1, wherein the amount of the silanol condensation catalyst is 0.001 to 10 parts by weight per 100 parts by weight of the modified propylene resin.
Claim 18
Dependent Claim
32 words
A process as claimed in claim 1, wherein the amount of the silanol condensation catalyst is 0.01 to 5 parts by weight per 100 parts by weight of the modified propylene resin.
Claim 19
Dependent Claim
112 words
A crosslinked polypropylene resin composition comprising: (A) 60 to 90 wt % of modified polypropylene resin obtained by grafting onto a polypropylene resin an ethylenically unsaturated silane compound represented by the formula RSiR'.sub.n Y.sub.3-n wherein R is an ethylenically unsaturated hydrocarbon group or a hydrocarbon oxy group, R' is an aliphatic saturated hydrocarbon group, and Y is a hydrolyzable organic group and is 0, 1 or 2; (B) 20 to 5 wt. % of an ethylene resin; and (C) 20 to 5 wt. % of an ethylene-α-olefin copolymer rubber, wherein said composition has been exposed to water or steam in the presence of a silanol condensation catalyst to effect the crosslinking thereof.
Claim 20
Dependent Claim
112 words
A crosslinked polypropylene resin composition comprising: (A) 60 to 90 wt % of modified polypropylene resin obtained by grafting onto a polypropylene resin an ethylenically unsaturated silane compound represented by the formula RSiR'.sub.n Y.sub.3-n wherein R is an ethylenically unsaturated hydrocarbon group or a hydrocarbon oxy group, R' is an aliphatic saturated hydrocarbon group, and Y is a hydrolyzable organic group and is 0, 1 or 2; (B) 20 to 5 wt. % of an ethylene resin; and (C) 20 to 5 wt. % of an ethylene-α-olefin copolymer rubber, wherein said composition has been exposed to water or steam in the presence of a silanol condensation catalyst to effect the crosslinking thereof.
Claim 21
Dependent Claim
25 words
The crosslinked polypropylene resin composition as claimed in claim 18 wherein said polypropylene resin has a melt flow index of 0.7 g./10 min. or less.
Claim 22
Dependent Claim
25 words
The crosslinked polypropylene resin composition as claimed in claim 18 wherein said propylene resin has a melt flow index of 0.3 g./10 min. or less.
Claim 23
Dependent Claim
28 words
The crosslinked polypropylene resin composition as claimed in claim 18 wherein said ethylenically unsaturated silane compound is selected from the group consisting of vinyltriacetoxysilane, γ-methacryloyloxypropyltrimethoxysilane, vinyltrimethoxysilane and vinlytriethyoxysilane.
Claim 24
Dependent Claim
26 words
The crosslinked polypropylene composition as claimed in claim 18, wherein the modified propylene resin contains 0.001 to 10 wt. % of the ethylenically unsaturated silane compound.
Claim 25
Dependent Claim
23 words
The crosslinked polypropylene resin composition as claimed in claim 18, wherein the ethylene resin has a density of 0.930 g./cm. 2 or more.
Claim 26
Dependent Claim
34 words
The crosslinked polypropylene resin composition as claimed in claim 18, wherein said ethylene-α-olefin copolymer rubber is selected from the group consisting of an ethylene-propylene rubber, an ethylene-propylene-diene-rubber, and ethylene-butene-1 rubber and an ethylene-butene-1-diene rubber.
Claim 27
Dependent Claim
30 words
The crosslinked polypropylene resin composition as claimed in claim 18, wherein at least one of the ethylene resin and ethylene-α-olefin copolymer rubber is graft-modified with the ethylenically unsaturated silane compound.
Claim 28
Dependent Claim
42 words
The crosslinked polyproplene resin composition as claimed in claim 18, wherein the amounts of the modified propylene resin, ethylene resin and ethylene-α-olefin copolymer rubber are 70 to 88 wt. %, 15 to 7 wt. % and 15 to 5 wt. %, respectively.
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) | 1988-12-09 | 1989-06-10 | 1989-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-09 | 1993-06-10 | 1993-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-09 | 1997-06-10 | 1997-12-10 | $7700.00 | Window Closed / Lapsed |