US4501827A
Expired / Lapsed
US
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Glass-reinforced polymer composition comprising 4-methyl-1-pentene polymer in combination with a graft modified acid polymer of 4-methyl-1-pentene polymer
Assignee: Mitsui Chemicals Inc
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Filing: 1983-12-22
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Granted: 1985-02-26
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Expires: 2003-12-22
Abstract
Abstract A glass-reinforced polymer composition of the invention contains 80 to 99.99 parts by weight, of a 4-methyl-1-pentene polymer, 0.01 to 20 parts by weight of a graft-modified polymer of 4-methyl-1-pentene having graft units of an unsaturated carboxylic acid or an acid anhydride thereof in an amount of 0.5 to 15% by weight and having a limiting viscosity of 0.3 to 10 dl/g, and 1 to 300 parts by weight of glass fibers based on 100 parts by weight of the sum of the 4-methyl-1-pentene polymer and the graft-modified polymer. The composition has overall standards of mechanical strength, heat resistance and water resistance.
Inventors
- 👤 Riichiro Nagano
- 👤 Hiroshi Kiga
- 👤 Tadao Iwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:37
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L51/00; C08L51/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
99 words
A glass-reinforced polymer composition comprising: 80 to 99.99 parts by weight of a 4-methyl-1-pentene polymer; 0.01 to 20 parts by weight of a graft-modified polymer of 4-methyl-1-pentene having grafted units of an unsaturated carboxylic acid or an acid anhydride thereof in amount of from 0.5% by weight to 15% by weight and a limiting viscosity[n] at 135° C. in decalin falling within a range between 0.3 dl/g and 10 dl/g, inclusive; and 1 to 300 parts by weight of glass fibers with respect to 100 parts by weight of a sum of the 4-methyl-1-pentene polymer and the graft-modified polymer.
Claim 2
Dependent Claim
99 words
A glass-reinforced polymer composition comprising: 80 to 99.99 parts by weight of a 4-methyl-1-pentene polymer; 0.01 to 20 parts by weight of a graft-modified polymer of 4-methyl-1-pentene having grafted units of an unsaturated carboxylic acid or an acid anhydride thereof in amount of from 0.5% by weight to 15% by weight and a limiting viscosity[n] at 135° C. in decalin falling within a range between 0.3 dl/g and 10 dl/g, inclusive; and 1 to 300 parts by weight of glass fibers with respect to 100 parts by weight of a sum of the 4-methyl-1-pentene polymer and the graft-modified polymer.
Claim 3
Dependent Claim
21 words
A composition according to claim 1, wherein the unsaturated carboxylic acid or the acid anhydride thereof is an unsaturated dicarboxylic anhydride.
Claim 4
Dependent Claim
14 words
A composition according to claim 2, wherein the unsaturated dicarboxylic anhydride is maleic anhydride.
Claim 5
Dependent Claim
18 words
A composition according to claim 2, wherein the unsaturated dicarboxylic anhydride is norbornene-2,3-dicarboxylic anhydride or methyl norbornene-2,3-dicarboxylic anhydride.
Claim 6
Dependent Claim
14 words
A composition according to claim 1, wherein the 4-methyl-1-pentene polymer is a 4-methyl-1-pentene homopolymer.
Claim 7
Dependent Claim
18 words
A composition according to claim 1, wherein the 4-methyl-1-pentene polymer is a copolymer of 4-methyl-1-pentene with an α-olefin.
Claim 8
Dependent Claim
15 words
A composition according to claim 6, wherein the α-olefin has 2 to 20 carbon atoms.
Claim 9
Dependent Claim
31 words
A composition according to claim 7, wherein the α-olefin is at least one member selected from the group consisting of ethylene, propylene, 1-butene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene and 1-octadecene.
Claim 10
Dependent Claim
26 words
A composition according to claim 8, wherein the α-olefin is at least one member selected from the consisting of 1-octence, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, and 1-octadecene.
Claim 11
Dependent Claim
30 words
A composition according to claim 1, wherein the 4-methyl-1-pentene polymer is used in an amount falling within a range between 90 parts by weight and 99.9 parts by weight, inclusive.
Claim 12
Dependent Claim
30 words
A composition according to claim 1, wherein the graft-modified polymer is used in an amount falling within a range between 0.1 parts by weight and 10 parts by weight, inclusive.
Claim 13
Dependent Claim
49 words
A composition according to claim 1, wherein the glass fibers is used in an amount falling within a range between 10 parts by weight and 100 parts by weight, inclusive, with respect to the sum in parts by weight of the 4-methyl-1-pentene polymer and the 4-methyl-1-pentene graft modified polymer.
Claim 14
Dependent Claim
16 words
A composition according to claim 1, wherein the glass fibers are surface-treated with an aminosilane compound.
Claim 15
Dependent Claim
25 words
A composition according to claim 13, wherein the aminosilane compound is at least one member selected from the group consisting of γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane.
Claim 16
Dependent Claim
19 words
A composition according to claim 1, wherein the graft-modified polymer has a molecular-weight distribution (Mw/Mn) of 1 to 8.
Claim 17
Dependent Claim
25 words
A composition according to claim 1, wherein the graft-modified polymer has a melting point falling within a range between 170° C. and 245° C., inclusive.
Claim 18
Dependent Claim
22 words
A composition according to claim 1, wherein the graft-modified polymer has a crystallinity falling within a range between 1% and 45%, inclusive.
Claim 19
Dependent Claim
21 words
A composition according to claim 1, wherein the graft-modified polymer has a differential scanning calorimeter parameter of not less than 4.0.
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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) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |