Patent US4421892A successfully refreshed from Google Patents.
US4421892A
Expired / Lapsed
US
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Thermoplastic polymeric material and method for the preparation thereof
Assignee: Ihara Chemical Industry Co Ltd
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Filing: 1982-05-06
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Granted: 1983-12-20
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Expires: 2002-05-06
Abstract
Abstract A thermoplastic polymeric material which is superior in mechanical strength comprises (1) 10 to 65% by weight of a hard copolymer containing as a comonomer an alpha , beta -unsaturated dicarboxylic acid anhydride and (2) 90 to 35% by weight of a polyamide, which are chemically bonded to each other. The thermoplastic polymeric material has a fine dispersion microstructure. The material may be reinforced by incorporating glass or carbon fibers therein.
Inventors
- 👤 Hideo Kasahara
- 👤 Kichiya Tazaki
- 👤 Kunio Fukuda
- 👤 Hiroshi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:00
CPC Classifications
C; C08; C08G; C08G81/00; C08G81/02; C08G81/024; C08G81/028
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
147 words
A thermoplastic polymeric material predominantly comprising a novel copolymer, said novel copolymer being composed of polymer chain moieties A having a molecular weight of 30,000 to 300,000 derived from a hard styrene copolymer and polymer chain moieties B having a molecular weight of 10,000 to 50,000 derived from a polyamide, said polymer chain moieties A and B being chemically bonded to each other, said styrene copolymer including 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and a styrene compound, said styrene copolymer being contained in a range of 10 to 65% by weight based on the weight of the said novel copolymer, said polyamide being contained in a range of 90 to 35% by weight based on the weight of the said novel copolymer and said polymeric material having a fine dispersion microstructure of not greater than 5μ in avarage particle diameter of the disperse phase.
Claim 2
Dependent Claim
147 words
A thermoplastic polymeric material predominantly comprising a novel copolymer, said novel copolymer being composed of polymer chain moieties A having a molecular weight of 30,000 to 300,000 derived from a hard styrene copolymer and polymer chain moieties B having a molecular weight of 10,000 to 50,000 derived from a polyamide, said polymer chain moieties A and B being chemically bonded to each other, said styrene copolymer including 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and a styrene compound, said styrene copolymer being contained in a range of 10 to 65% by weight based on the weight of the said novel copolymer, said polyamide being contained in a range of 90 to 35% by weight based on the weight of the said novel copolymer and said polymeric material having a fine dispersion microstructure of not greater than 5μ in avarage particle diameter of the disperse phase.
Claim 3
Dependent Claim
26 words
A thermoplastic polymeric material according to claim 1 having an ultrafine dispersion microstructure of not greater than 2μ in average particle diameter of the disperse phase.
Claim 4
Dependent Claim
32 words
A thermoplastic polymeric material according to claim 1 or 2 wherein the styrene copolymer comprises 85 to 98 mol% of styrene compound and 15 to 2 mol% of α,β-unsaturated dicarboxylic acid anhydride.
Claim 5
Dependent Claim
41 words
A thermoplastic polymeric material according to claim 1 or 2 wherein the styrene copolymer comprises 40 to 96 mol% of styrene compound, 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and 2 to 58 mol% of α,β-unsaturated carboxylic acid ester.
Claim 6
Dependent Claim
39 words
A thermoplastic polymeric material according to claim 1 or 2 wherein the styrene copolymer comprises 50 to 96 mol% of styrene compound, 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and 2 to 20 mol% of unsaturated nitrile.
Claim 7
Dependent Claim
157 words
A thermoplastic polymeric material predominantly comprising a novel copolymer, said novel copolymer being composed of polymer chain moieties A having a molecular weight of 30,000 to 300,000 derived from a hard unsaturated carboxylic acid ester copolymer and polymer chain moieties B having a molecular weight of 10,000 to 50,000 derived from a polyamide, said polymer chain moieties A and B being chemically bonded to each other, said unsaturated carboxylic acid ester copolymer including 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and α,β-unsaturated carboxylic acid ester, said unsaturated carboxylic acid ester copolymer being contained in a range of 10 to 65% by weight based on the weight of the said novel copolymer, said polyamide being contained in a range of 90 to 35% by weight based on the weight of the said novel copolymer and said polymeric material having a fine dispersion microstructure of not greater than 5μ in average particle diameter of the disperse phase.
Claim 8
Dependent Claim
157 words
A thermoplastic polymeric material predominantly comprising a novel copolymer, said novel copolymer being composed of polymer chain moieties A having a molecular weight of 30,000 to 300,000 derived from a hard unsaturated carboxylic acid ester copolymer and polymer chain moieties B having a molecular weight of 10,000 to 50,000 derived from a polyamide, said polymer chain moieties A and B being chemically bonded to each other, said unsaturated carboxylic acid ester copolymer including 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and α,β-unsaturated carboxylic acid ester, said unsaturated carboxylic acid ester copolymer being contained in a range of 10 to 65% by weight based on the weight of the said novel copolymer, said polyamide being contained in a range of 90 to 35% by weight based on the weight of the said novel copolymer and said polymeric material having a fine dispersion microstructure of not greater than 5μ in average particle diameter of the disperse phase.
Claim 9
Dependent Claim
35 words
A thermoplastic polymeric material according to claim 6 wherein the unsaturated carboxylic acid ester copolymer comprises 70 to 98 mol% of α,β-unsaturated carboxylic acid ester and 30 to 2 mol% of α,β-unsaturated dicarboxylic acid anhydride.
Claim 10
Dependent Claim
42 words
A thermoplastic polymeric material according to claim 6 wherein the unsaturated carboxylic acid ester copolymer comprises 60 to 96 mol% of α,β-unsaturated carboxylic acid ester, 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and 2 to 38 mol% of styrene compound.
Claim 11
Dependent Claim
42 words
A thermoplastic polymeric material according to claim 6 wherein the unsaturated carboxylic acid ester copolymer comprises 60 to 96 mol% of α,β-unsaturated carboxylic acid ester, 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and 2 to 38 mol% of unsaturated nitrile.
Claim 12
Dependent Claim
25 words
A resin composition comprising the thermoplastic polymeric material according to claim 1 or 6 and at least one substance selected from antioxidants and ultraviolet absorbers.
Claim 13
Dependent Claim
31 words
A glass fiber-reinforced resin composition comprising 40 to 95% by weight of the thermoplastic polymeric material according to claim 1 or 6 and 5 to 60% by weight of glass fiber.
Claim 14
Dependent Claim
31 words
A carbon fiber-reinforced resin composition comprising 40 to 95% by weight of the thermoplastic polymeric material according to claim 1 or 6 and 5 to 60% by weight of carbon fiber.
Claim 15
Independent Claim
108 words
A method for producing a thermoplastic polymeric material having a fine dispersion microstructure of not greater than 5μ in average particle diameter of the disperse phase, which comprises melt-kneading 10 to 65% by weight of a hard styrene copolymer having a molecular weight of 30,000 to 300,000 and 90 to 35% by weight of a polyamide having a molecular weight of 10,000 to 50,000 at a temperature of 260° to 330° C. and a shearing rate of not lower than 100 sec -1 under the absence of a radical generating catalyst, said styrene copolymer including 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and a styrene compound.
Claim 16
Independent Claim
108 words
A method for producing a thermoplastic polymeric material having a fine dispersion microstructure of not greater than 5μ in average particle diameter of the disperse phase, which comprises melt-kneading 10 to 65% by weight of a hard styrene copolymer having a molecular weight of 30,000 to 300,000 and 90 to 35% by weight of a polyamide having a molecular weight of 10,000 to 50,000 at a temperature of 260° to 330° C. and a shearing rate of not lower than 100 sec -1 under the absence of a radical generating catalyst, said styrene copolymer including 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and a styrene compound.
Claim 17
Dependent Claim
29 words
A method according to claim 13 wherein the styrene copolymer comprises 85 to 98 mol% of a styrene compound and 15 to 2 mol% of α,β-unsaturated dicarboxylic acid anhydride.
Claim 18
Dependent Claim
38 words
A method according to claim 13 wherein the styrene copolymer comprises 40 to 96 mol% of a styrene compound, 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and 2 to 58 mol% of α,β-unsaturated carboxylic acid ester.
Claim 19
Dependent Claim
36 words
A method according to claim 13 wherein the styrene copolymer comprises 50 to 96 mol% of a styrene compound, 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and 2 to 20 mol% of unsaturated nitrile.
Claim 20
Independent Claim
89 words
A method for producing a thermoplastic polymeric material having a fine dispersion microstructure of not greater than 5μ in average particle diameter of the disperse phase, which comprises melt-kneading 10 to 65% by weight of a hard unsaturated carboxylic acid ester copolymer having a molecular weight of 30,000 to 300,000 and 90 to 35% by weight of a polyamide having a molecular weight of 10,000 to 50,000, said hard unsaturated carboxylic acid ester copolymer including 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and α,β-unsaturated carboxylic acid ester.
Claim 21
Independent Claim
89 words
A method for producing a thermoplastic polymeric material having a fine dispersion microstructure of not greater than 5μ in average particle diameter of the disperse phase, which comprises melt-kneading 10 to 65% by weight of a hard unsaturated carboxylic acid ester copolymer having a molecular weight of 30,000 to 300,000 and 90 to 35% by weight of a polyamide having a molecular weight of 10,000 to 50,000, said hard unsaturated carboxylic acid ester copolymer including 2 to 30 mol% of α,β-unsaturated dicarboxylic acid anhydride and α,β-unsaturated carboxylic acid ester.
Claim 22
Dependent Claim
26 words
A thermoplastic polymeric material according to claim 1, wherein the hard styrene copolymer has a flexural modulus of not lower than 2×10 3 kg/cm 2 .
Claim 23
Dependent Claim
30 words
A thermoplastic polymeric material according to claim 6, wherein the hard unsaturated carboxylic acid ester copolymer has a flexural modulus of not lower than 2×10 3 l kg/cm 2 .
Claim 24
Dependent Claim
24 words
A method according to claim 13, wherein the hard styrene copolymer has a flexural modulus of not lower than 2×10 3 kg/cm 2 .
Claim 25
Dependent Claim
27 words
A method according to claim 17, wherein the hard unsaturated carboxylic acid ester copolymer has a flexural modulus of not lower than 2×10 3 kg/cm 2 .
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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) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |