US5159008A
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Reinforced polyphenylene ether resin composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1991-04-26
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Granted: 1992-10-27
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Expires: 2011-04-26
Abstract
Abstract A thermoplastic resin composition comprising: 30 to 60 parts by weight of a polyphenylene ether which is a mixture of a high viscosity polyphenylene ether (A) with an inherent viscosity (ηA) of 0.4 dl/g to 1.0 dl/g and a low viscosity polyphenylene ether (B) with an inherent viscosity (ηB) of 0.25 dl/g to less than 0.4 dl/g at a weight ratio of (A)/(B) of 10/90 to 90/10 based on 100 parts by weight of the total of (A), (B) and (C), 40 to 70 parts by weight of a polyamide (C) with a relative viscosity (η) of 1.0 to 8.0 based on 100 parts by weight of the total of (A), (B) and (C), 0.1 to 10 parts by weight of a compound (F) having both of an unsaturated group and a polar group within the same molecule based on 100 parts by weight of the total of (A), (B) and (C), 5 to 100 parts by weight of mineral fillers and/or glass fibers (G) based on 100 parts by weight of the total of (A), (B) and (C), and 0 to 20 parts by weight of alkenyl aromatic polymer (D) based on 100 parts by weight of the total of (A), (B) and (C) and/or 0 to 50 parts by weight of an impact resistance improver (E) based on 100 parts by weight of the total of (A), (B) and (C), with the flow ratio represented by the ratio of the melt flow rate measured at 280° C., 5 kg load (MFR5) to the melt flow rate measured at 280° C., 2.16 kg load (MFR2) (FR=MFR5/MFR2) being 2.5 or more, and MFR5 30 or more, which composition is excellent in heat resistant rigidity and also markedly improved in molding processability.
Inventors
- 👤 Koji Nishida
- 👤 Yoshihiro Kurasawa
- 👤 Suetsugu Kakiichi
- 👤 Shohji Yoshino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:23
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08L77/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
282 words
A thermoplastic resin composition comprising: 30 to 60 parts by weight of a polyphenylene ether which is a mixture of a high viscosity polyphenylene ether (A) with an inherent viscosity (η A ) of 0.4 dl/g to 1.0 dl/g and a low viscosity polyphenylene ether (B) with an inherent viscosity η B ) of 0.25 dl/g to less than 0.4 dl/g at a weight ratio of (A)/(B) of 10/90 to 90/10 based on 100 parts by weight of the total of (A), (B) and (C), 40 to 60 parts by weight of a polyamide (C) with a relative viscosity (η) of 1.0 to 8.0 based on 100 parts by weight of the total (A), (B) and (C), 0 to 20 parts by weight of alkenyl aromatic polymer (D) based on 100 parts by weight of the total of (A), (B) and (C), 0 to 50 parts by weight of an impact resistance improver (E) based on 100 parts by weight of the total of (A), (B) and (C), 0.1 to 10 parts by weight of a compound (F) having both an unsaturated group and a polar group within the same molecule based on 100 parts by weight of the total of (A), (B) and (C), and 5 to 100 parts by weight of mineral fillers and/or glass fibers (G) based on 100 parts by weight of the total of (A), (B) and (C), with the flow ration (FR) represented by the ratio of the melt flow rate measured at 280° C., 5 kg load (MFR5) to the melt flow rate measured at 280° C., 2.16 kg load (MFR2) (FR=MFR5/MFR2) being 2.5 or more, and MFR5 being not less than 30 g/10 minutes.
Claim 2
Dependent Claim
282 words
A thermoplastic resin composition comprising: 30 to 60 parts by weight of a polyphenylene ether which is a mixture of a high viscosity polyphenylene ether (A) with an inherent viscosity (η A ) of 0.4 dl/g to 1.0 dl/g and a low viscosity polyphenylene ether (B) with an inherent viscosity η B ) of 0.25 dl/g to less than 0.4 dl/g at a weight ratio of (A)/(B) of 10/90 to 90/10 based on 100 parts by weight of the total of (A), (B) and (C), 40 to 60 parts by weight of a polyamide (C) with a relative viscosity (η) of 1.0 to 8.0 based on 100 parts by weight of the total (A), (B) and (C), 0 to 20 parts by weight of alkenyl aromatic polymer (D) based on 100 parts by weight of the total of (A), (B) and (C), 0 to 50 parts by weight of an impact resistance improver (E) based on 100 parts by weight of the total of (A), (B) and (C), 0.1 to 10 parts by weight of a compound (F) having both an unsaturated group and a polar group within the same molecule based on 100 parts by weight of the total of (A), (B) and (C), and 5 to 100 parts by weight of mineral fillers and/or glass fibers (G) based on 100 parts by weight of the total of (A), (B) and (C), with the flow ration (FR) represented by the ratio of the melt flow rate measured at 280° C., 5 kg load (MFR5) to the melt flow rate measured at 280° C., 2.16 kg load (MFR2) (FR=MFR5/MFR2) being 2.5 or more, and MFR5 being not less than 30 g/10 minutes.
Claim 3
Dependent Claim
33 words
A thermoplastic resin composition according to claim 1, wherein the polyphenylene ether is a poly(2,6-dimethyl-1,4-phenylene)ether, with ηA being 0.45 dl/g to 0.70 dl/g, and ηB being 0.25 dl/g to less than 0.35 dl/g.
Claim 4
Dependent Claim
31 words
A thermoplastic resin composition according to claim 1, wherein the formulation ratio (A)/(B) of the high viscosity polyphenylene ether (A) to the low viscosity polyphenylene ether (B) is 20/80 to 80/20.
Claim 5
Dependent Claim
41 words
A thermoplastic resin composition according to claim 1, wherein the polyamide (C) is a mixture of a high viscosity polyamide with a relative viscosity (η) exceeding 4.0 and a low viscosity polyamide with a relative viscosity (η) not higher than 4.0.
Claim 6
Dependent Claim
16 words
A thermoplastic resin composition according to claim 4, wherein the polyamide (C) contains an amorphous polyamide.
Claim 7
Dependent Claim
51 words
A thermoplastic resin composition according to claim 4, wherein the polyamide (C) is a nylon-6, comprising a high viscosity nylon-6 with a relative viscosity (η) exceeding 4.0 and a low viscosity nylon-6 with a relative viscosity (η) not higher than 4.0 in combination with a formulation ratio of 90:10 to 10:90.
Claim 8
Dependent Claim
16 words
A thermoplastic resin composition according to claim 6, wherein the polyamide (C) contains an amorphous polyamide.
Claim 9
Dependent Claim
54 words
A thermoplastic resin composition according to claim 1, wherein the component (E) is a copolymer comprising an alkenyl aromatic compound and a conjugated diene as the primary monomeric components, which is a copolymer including partially crosslinked structure, or including a part of the aliphatic unsaturated bonds derived from the conjugated diene which is hydrogenated.
Claim 10
Dependent Claim
28 words
A thermoplastic resin composition according to claim 1, wherein the component (E) is a copolymer comprising styrene and butadiene as the monomeric components or a hydrogenated product thereof.
Claim 11
Dependent Claim
17 words
A thermoplastic resin composition according to claim 1, wherein the component (F) is an unsaturated carboxylic acid.
Claim 12
Dependent Claim
15 words
A thermoplastic resin composition according to claim 1, wherein the component (F) is maleic anhydride.
Claim 13
Dependent Claim
24 words
A thermoplastic resin composition according to claim 1, wherein the component (G) is glass fibers with an average diameter of 3 to 20 μm.
Claim 14
Dependent Claim
36 words
A thermoplastic resin composition according to claim 1, wherein the component (G) is glass fibers which are chopped strands with an average diameter of 3 to 20 μm and a length of 1 to 8 mm.
Claim 15
Dependent Claim
27 words
A thermoplastic resin composition according to claim 1, wherein the respective inherent viscosities (η A ) and (η B ) satisfy the condition of: 0.1≦η.sub.A -η.sub.B ≦0.8.
Claim 16
Dependent Claim
28 words
A thermoplastic resin composition according to claim 1, wherein η A is 0.45 dl/g to 1.0 dl/g and η B is 0.25 dl/g to less than 0.4 dl/g.
Claim 17
Dependent Claim
28 words
A thermoplastic resin composition according to claim 1, wherein η A is 0.45 dl/g to 0.7 dl/g and η B is 0.25 dl/g to less than 0.4 dl/g.
Claim 18
Dependent Claim
28 words
A thermoplastic resin composition according to claim 1, wherein η A is 0.46 dl/g to 0.56 dl/g and η B is 0.25 dl/g to less than 0.4 dl/g.
Claim 19
Dependent Claim
26 words
A thermoplastic resin composition according to claim 1, wherein η A is 0.46 dl/g to 0.56 dl/g and η B is 0.30 dl/g to 0.35 dl/g.
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) | 1995-10-27 | 1996-04-27 | 1996-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-27 | 2000-04-27 | 2000-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-27 | 2004-04-27 | 2004-10-27 | $7700.00 | Window Closed / Lapsed |