Patent US5206284A successfully refreshed from Google Patents.
US5206284A
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US
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Thermoplastic resin composition
Assignee: Toyota Motor Corp
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Filing: 1991-07-11
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Granted: 1993-04-27
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Expires: 2011-07-11
Abstract
Abstract A polypropylene thermoplastic resin composition comprising (a) a modified crystalline polypropylene of a crystalline polypropylene comprising said modified crystalline polypropylene and (b) a modified polyamide obtained by partially or wholly grafting a polyamide with a clay mineral. A polypropylene thermoplastic resin composition comprising, in addition to the above polypropylene thermoplastic resin composition comprising the components (a) and (b), one or any combination of the following components (c), (d) and (e): (c) an ethylene- alpha -olefin copolymer rubber or a modified ethylene- alpha -olefin copolymer rubber, (d) a block copolymer between a monovinyl-substituted aromatic hydrocarbon and a conjugated diene, a hydrogenation product of said block copolymer, or a modification product of said block copolymer, and (e) an inorganic filler. The modified polyamide as the component (b), obtained by modifying a polyamide with a clay mineral has good compatibility with or good dispersibility in the component (a), i.e. the modified crystalline polypropylene or the crystalline polypropylene comprising the modified crystalline polypropylene. Therefore, the polypropylene thermoplastic resin composition comprising these components (a) and (b) has excellent heat resistance and excellent impact resistance.
Inventors
- 👤 Osamu Fukui
- 👤 Kiyoshi Tsutsui
- 👤 Tomohiko Akagawa
- 👤 Ikunori Sakai
- 👤 Takao Nomura
- 👤 Takeyoshi Nishio
- 👤 Toshio Yokoi
- 👤 Nobuya Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:45
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/006; C08K; C08K3/00; C08K3/34; C08K3/346; C08L51/06; C08L53/00; C08L53/005; C08L53/02; C08L53/025; C08L77/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
101 words
A polypropylene thermoplastic resin composition comprising: 95-5% by weight of (a) a modified polypropylene obtained by grafting a crystalline polypropylene with 0.05 to 5% by weight of at least one compound selected from the group consisting of an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride, an unsaturated carboxylic ester, an unsaturated carboxylate salt and an unsaturated carboxylic acid amide, or a crystalline polypropylene comprising at least 5% by weight of said modified polypropylene, and 5-95% by weight of (b) a modified polyamide obtained by partially or wholly modifying a polyamide with 0.05 to 10% by weight of a clay mineral.
Claim 2
Dependent Claim
101 words
A polypropylene thermoplastic resin composition comprising: 95-5% by weight of (a) a modified polypropylene obtained by grafting a crystalline polypropylene with 0.05 to 5% by weight of at least one compound selected from the group consisting of an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride, an unsaturated carboxylic ester, an unsaturated carboxylate salt and an unsaturated carboxylic acid amide, or a crystalline polypropylene comprising at least 5% by weight of said modified polypropylene, and 5-95% by weight of (b) a modified polyamide obtained by partially or wholly modifying a polyamide with 0.05 to 10% by weight of a clay mineral.
Claim 3
Dependent Claim
25 words
A polypropylene thermoplastic resin composition according to claim 1, comprising: 80-20% by weight of the component (a), and 20-80% by weight of the component (b).
Claim 4
Dependent Claim
55 words
A polypropylene thermoplastic resin composition according to claim 1, wherein the crystalline polypropylene is a crystalline propylene homopolymer, an ethylene-propylene random copolymer having an ethylene content of not more than 5% by weight, or an ethylene-propylene block copolymer having an ethylene content of 3-15% by weight and has a melt index of 0.3-70 g/10 min.
Claim 5
Dependent Claim
38 words
A polypropylene thermoplastic resin composition according to claim 1, wherein the unsaturated carboxylic acid is a member selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, itaconic acid, fumaric acid, citraconic acid and crotonic acid.
Claim 6
Dependent Claim
46 words
A polypropylene thermoplastic resin composition according to claim 1, wherein the derivative of an unsaturated carboxylic acid is a member selected from the group consisting of maleic anhydride, itaconic anhydride, citraconic anhydride, glycidyl methacrylate, 2-hydroxyethyl methacrylate, polyethylene glycol methacrylate, N-methylolmethacrylamide, calcium methacrylate, gamma-methacryloxypropyltrimethoxysilane, acrylamide and methacrylamide.
Claim 7
Dependent Claim
32 words
A polypropylene thermoplastic resin composition according to claim 1, wherein the modified polypropylene has a grafting degree of at least 0.03 by weight and has a melt index of 0.5-200 g/10 min.
Claim 8
Dependent Claim
22 words
A polypropylene thermoplastic resin composition according to claim 1, wherein the polyamide is nylon-6, nylon-6,6, nylon-6,10, nylon-9, nylon-11, nylon-12, nylon-6,6/6 or nylon-12,12.
Claim 9
Dependent Claim
32 words
A polypropylene thermoplastic resin composition according to claim 1, wherein the clay mineral comprises a silicate of layer structure having four sides each of 0.002-1 μm and a thickness of 6-20 Å.
Claim 10
Dependent Claim
31 words
A polypropylene thermoplastic resin composition according to claim 7, wherein the clay mineral is a member selected from the group consisting of montmorillonite. saponite, beidellite, nontronite, hectorite, stevensite, vermiculite and halloysite.
Claim 11
Dependent Claim
122 words
A propylene thermoplastic resin composition comprising: 100 parts by weight of a polypropylene thermoplastic resin composition comprising 95-5% by weight of (a) a modified polypropylene obtained by grafting a crystalline polypropylene with 0.05 to 5% by weight of at least one compound selected from the group consisting of an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride, an unsaturated carboxylate ester, an unsaturated carboxylate salt and an unsaturated carboxylic acid amide, or a crystalline polypropylene comprising at least 5% by weight of said modified polypropylene, and 5-95% by weight of (b) a modified polyamide obtained by partially or wholly modifying a polyamide with 0.05 to 10% by weight of a clay mineral, and 5-150 parts by weight of (e) an inorganic filler.
Claim 12
Dependent Claim
122 words
A propylene thermoplastic resin composition comprising: 100 parts by weight of a polypropylene thermoplastic resin composition comprising 95-5% by weight of (a) a modified polypropylene obtained by grafting a crystalline polypropylene with 0.05 to 5% by weight of at least one compound selected from the group consisting of an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride, an unsaturated carboxylate ester, an unsaturated carboxylate salt and an unsaturated carboxylic acid amide, or a crystalline polypropylene comprising at least 5% by weight of said modified polypropylene, and 5-95% by weight of (b) a modified polyamide obtained by partially or wholly modifying a polyamide with 0.05 to 10% by weight of a clay mineral, and 5-150 parts by weight of (e) an inorganic filler.
Claim 13
Dependent Claim
21 words
A polypropylene thermoplastic resin composition according to claim 10, wherein the inorganic filler is a powdery filler or a fibrous filler.
Claim 14
Dependent Claim
39 words
A polypropylene thermoplastic resin composition according to claim 11, wherein the powdery filler is at least one member selected from the group consisting of metal oxides, metal hydroxides, metal carbonates, metal silicates, metal borates, metal phosphates and metal sulfates.
Claim 15
Dependent Claim
43 words
A polypropylene thermoplastic resin composition according to claim 11, wherein the fibrous filler is at least one member selected from the group consisting of a glass fiber, a potassium titanate fiber, a ceramic fiber, wollastonite, a carbon fiber and a stainless steel fiber.
References Cited (Backward Citations)
US4381366A
Cited
US4537929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |