US5476908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting resin composition, cured resin product, prepreg and fiber-reinforced plastic
Assignee: Toray Industries Inc
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Filing: 1993-04-12
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Granted: 1995-12-19
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Expires: 2013-04-12
Abstract
Abstract A cured resin product has a strain energy release rate (GIC) of at least 400 J/m 2 , a flexural modulus of at least 300 Kg/mm 2 , and a glass transition temperature (Tg) of at least 120° C. The cured resin composition comprises a thermoset resin component (A), optionally including a curing agent (B), and a thermoplastics resin component (C), the thermoplastics resin and thermoset resin components (C) and (A) being present at least partly in respective phases (1) and (2) each being elongate in at least one direction and each preferably having a three dimensionally continuous structure. Phase (1) may contain a silicon containing compound providing a concentration therein of elemental silicon higher than that in any other phase, and/or the cured resin product may additionally include regions where one of the phases (1) and (2) essentially surrounds the other. The thermoplastics resin (C) may be a block or graft copolymer comprising a molecular chain compatible with, and molecular chain incompatible with, the thermoset resin (A). A composition containing the above components (A) to (C) may be compounded with fibrous reinforcement to provide a prepreg curable to obtain a high strength fiber reinforced plastics material.
Inventors
- 👤 Hajime Kishi
- 👤 Nobuyuki Odagiri
- 👤 Kuniaki Tobukuro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:37
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/24; C08L; C08L83/00; C08L83/10; C08J3/00; C08J3/24; C08J5/241; C08J5/243; C08K; C08K5/00; C08K5/0008; C08K5/0025; C08K7/00; C08K7/02; C08K7/04; C08K7/06; C08J2383/00; C08J2383/10; C08L2312/00; Y; Y10; Y10S; Y10S525/00; Y10S525/902
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
239 words
A cured resin product comprising a thermoset resin (A) and a thermoplastic resin (C), wherein the cured resin product comprises at least a phase (1) in which the thermoplastics resin (C) is at least a major constituent; and a phase (2) in which the thermoset resin (A) is at least a major constituent, each of said phases (1) and (2) is separate from the other and has a three dimensionally continuous structure, and phase (1) contains a silicon containing compound and has a concentration of elemental silicon higher than that in any other phase, wherein the cured resin product is formed from a thermoplastics resin (C) comprising a copolymer selected from the group consisting of block and graft copolymers, which copolymer has a siloxane molecular chain originally incompatible with, and a molecular chain selected from the group consisting of polyimide, polyamide and polyether molecular chains compatible with, the thermoset resin (A), wherein the thermoset resin (A) comprises a resin selected from the group consisting of epoxy, maleimide, triazine, polyimide and phenol resins, and combinations thereof, cured with a curing agent (B), and the thermoplastics resin (C) has terminal groups chemically combined with the thermoset resin (A), wherein the thermoplastics resin (C) additionally contains residues having a structure (a) ##STR9## where R 1 and R 1 ' are, independently of one another, each selected from H and a group C m H 2m+1 , where m is at least 1.
Claim 2
Dependent Claim
239 words
A cured resin product comprising a thermoset resin (A) and a thermoplastic resin (C), wherein the cured resin product comprises at least a phase (1) in which the thermoplastics resin (C) is at least a major constituent; and a phase (2) in which the thermoset resin (A) is at least a major constituent, each of said phases (1) and (2) is separate from the other and has a three dimensionally continuous structure, and phase (1) contains a silicon containing compound and has a concentration of elemental silicon higher than that in any other phase, wherein the cured resin product is formed from a thermoplastics resin (C) comprising a copolymer selected from the group consisting of block and graft copolymers, which copolymer has a siloxane molecular chain originally incompatible with, and a molecular chain selected from the group consisting of polyimide, polyamide and polyether molecular chains compatible with, the thermoset resin (A), wherein the thermoset resin (A) comprises a resin selected from the group consisting of epoxy, maleimide, triazine, polyimide and phenol resins, and combinations thereof, cured with a curing agent (B), and the thermoplastics resin (C) has terminal groups chemically combined with the thermoset resin (A), wherein the thermoplastics resin (C) additionally contains residues having a structure (a) ##STR9## where R 1 and R 1 ' are, independently of one another, each selected from H and a group C m H 2m+1 , where m is at least 1.
Claim 3
Dependent Claim
135 words
A resin composition comprising a thermosetting resin (A), a curing agent B) and a thermoplastics resin (C), which is soluble in the resin (A), wherein the thermoplastics resin (C) is a copolymer selected from the group consisting of block copolymers and graft copolymers each comprising a molecular chain compatible with, and a molecular chain incompatible with, at least one of the thermosetting resin (A) and curing agent (B) wherein the thermoplastic resin (C) is selected from the group consisting of polyimides, polyamides and polyethers each having a siloxane molecular chain, wherein the thermoplastics resin (C) additionally contains residues having a structure of formula (a) ##STR10## where R 1 and R 1 ' are, independently of one another, each selected from H and a group C m H 2m+1 , where m is at least 1.
Claim 4
Dependent Claim
135 words
A resin composition comprising a thermosetting resin (A), a curing agent B) and a thermoplastics resin (C), which is soluble in the resin (A), wherein the thermoplastics resin (C) is a copolymer selected from the group consisting of block copolymers and graft copolymers each comprising a molecular chain compatible with, and a molecular chain incompatible with, at least one of the thermosetting resin (A) and curing agent (B) wherein the thermoplastic resin (C) is selected from the group consisting of polyimides, polyamides and polyethers each having a siloxane molecular chain, wherein the thermoplastics resin (C) additionally contains residues having a structure of formula (a) ##STR10## where R 1 and R 1 ' are, independently of one another, each selected from H and a group C m H 2m+1 , where m is at least 1.
Claim 5
Dependent Claim
172 words
A cured resin product comprising a thermoset resin (A) and a thermoplastic resin (C), wherein the cured resin product comprises at least a phase (1) in which the thermoplastics resin (C) is at least a major constituent; and a phase (2) in which the thermoset resin (A) is at least a major constituent, each of said phases (1) and (2) is separate from the other and has a three dimensionally continuous structure, and phase (1) contains a silicon containing compound and has a concentration of elemental silicon higher than that in any other phase, wherein the cured resin product is formed from a thermoplastics resin (C) comprising a copolymer selected from the group consisting of block and graft copolymers, which copolymer has a siloxane molecular chain originally incompatible with, and a molecular chain selected from the group consisting of polyimide, polyamide and polyether molecular chains compatible with, the thermoset resin (A), wherein the thermoplastics resin (C) is selected from the group consisting of polyimides and polyamides each having a siloxane molecular chain.
Claim 6
Dependent Claim
172 words
A cured resin product comprising a thermoset resin (A) and a thermoplastic resin (C), wherein the cured resin product comprises at least a phase (1) in which the thermoplastics resin (C) is at least a major constituent; and a phase (2) in which the thermoset resin (A) is at least a major constituent, each of said phases (1) and (2) is separate from the other and has a three dimensionally continuous structure, and phase (1) contains a silicon containing compound and has a concentration of elemental silicon higher than that in any other phase, wherein the cured resin product is formed from a thermoplastics resin (C) comprising a copolymer selected from the group consisting of block and graft copolymers, which copolymer has a siloxane molecular chain originally incompatible with, and a molecular chain selected from the group consisting of polyimide, polyamide and polyether molecular chains compatible with, the thermoset resin (A), wherein the thermoplastics resin (C) is selected from the group consisting of polyimides and polyamides each having a siloxane molecular chain.
Claim 7
Dependent Claim
20 words
A cured resin product according to claim 3, wherein the thermoplastic resin is a polyimide having a siloxane molecular chain.
Claim 8
Dependent Claim
171 words
A cured resin product comprising a thermoset resin (A) and a thermoplastic resin (C), wherein the cured resin product comprises at least a phase (1) in which the thermoplastics resin (C) is at least a major constituent; and a phase 2) in which the thermoset resin (A) is at least a major constituent, each of said phases (1) and (2) is separate from the other and has a three dimensionally essentially continuous structure, and the cured resin product additionally includes regions where one of the phases (1) and (2) essentially surrounds the other, wherein the cured resin product is formed from a thermoplastics resin (C) comprising a Copolymer selected from the group consisting of block and graft copolymers, which copolymer has a siloxane molecular chain originally incompatible with, and a molecular chain selected from the group consisting of polyimide, polyamide and polyether molecular chains compatible with, the thermoset resin (A), wherein the thermoplastics resin (C) is selected from the group consisting of polyimides and polyamides each having a siloxane molecular chain.
Claim 9
Dependent Claim
171 words
A cured resin product comprising a thermoset resin (A) and a thermoplastic resin (C), wherein the cured resin product comprises at least a phase (1) in which the thermoplastics resin (C) is at least a major constituent; and a phase 2) in which the thermoset resin (A) is at least a major constituent, each of said phases (1) and (2) is separate from the other and has a three dimensionally essentially continuous structure, and the cured resin product additionally includes regions where one of the phases (1) and (2) essentially surrounds the other, wherein the cured resin product is formed from a thermoplastics resin (C) comprising a Copolymer selected from the group consisting of block and graft copolymers, which copolymer has a siloxane molecular chain originally incompatible with, and a molecular chain selected from the group consisting of polyimide, polyamide and polyether molecular chains compatible with, the thermoset resin (A), wherein the thermoplastics resin (C) is selected from the group consisting of polyimides and polyamides each having a siloxane molecular chain.
Claim 10
Dependent Claim
20 words
A cured resin product according to claim 5, wherein the thermoplastic resin is a polyimide having a siloxane molecular chain.
Claim 11
Dependent Claim
168 words
A cured resin product having a thermoset resin (A) and a thermoplastic resin (C), wherein the cured resin product is formed from a thermoplastics resin (C) comprising a copolymer selected from the group consisting of block and graft copolymers, which copolymer has a siloxane molecular chain originally incompatible with, and a molecular chain selected from the group consisting of polyimide, polyamide and polyether molecular chains compatible with, the thermoset resin A); wherein said cured resin product has a strain energy release rate (GIC) of at least 400 J/m 2 , a flexural modulus of at least 300 Kg/mm 2 , a glass transition temperature (Tg) of at least 120° C., at least two phases, each of which phases has a three dimensionally continuous structure, and one of which phases contains a silicon containing compound and has a concentration of elemental silicon higher than in any other phase, wherein the thermoplastics resin (C) is selected from the group consisting of polyimides and polyamides each having a siloxane molecular chain.
Claim 12
Dependent Claim
168 words
A cured resin product having a thermoset resin (A) and a thermoplastic resin (C), wherein the cured resin product is formed from a thermoplastics resin (C) comprising a copolymer selected from the group consisting of block and graft copolymers, which copolymer has a siloxane molecular chain originally incompatible with, and a molecular chain selected from the group consisting of polyimide, polyamide and polyether molecular chains compatible with, the thermoset resin A); wherein said cured resin product has a strain energy release rate (GIC) of at least 400 J/m 2 , a flexural modulus of at least 300 Kg/mm 2 , a glass transition temperature (Tg) of at least 120° C., at least two phases, each of which phases has a three dimensionally continuous structure, and one of which phases contains a silicon containing compound and has a concentration of elemental silicon higher than in any other phase, wherein the thermoplastics resin (C) is selected from the group consisting of polyimides and polyamides each having a siloxane molecular chain.
Claim 13
Dependent Claim
20 words
A cured resin product according to claim 7, wherein the thermoplastic resin is a polyimide having a siloxane molecular chain.
Claim 14
Dependent Claim
148 words
A cured resin product comprising a thermoset resin component (A) and a thermoplastics resin component (C), Said thermoplastics resin and thermoset resin component (C) and (A) being present at least partly in respective phases (1) and (2), each of said phases being continuous and one of said phases (1) and (2) contains a silicon containing compound and has a concentration of elemental silicon higher than that in any other phase, wherein the cured resin product is formed from a thermoplastics resin (C) comprising a copolymer selected from the group consisting of block and graft copolymers, which copolymer has a siloxane molecular chain originally incompatible with, and a molecular chain selected from the group consisting of polyimide, polyamide and polyether molecular chains compatible with, the thermoset resin (A), wherein the thermoplastics resin (C) is selected from the group consisting of polyimides and polyamides each having a siloxane molecular chain.
Claim 15
Dependent Claim
148 words
A cured resin product comprising a thermoset resin component (A) and a thermoplastics resin component (C), Said thermoplastics resin and thermoset resin component (C) and (A) being present at least partly in respective phases (1) and (2), each of said phases being continuous and one of said phases (1) and (2) contains a silicon containing compound and has a concentration of elemental silicon higher than that in any other phase, wherein the cured resin product is formed from a thermoplastics resin (C) comprising a copolymer selected from the group consisting of block and graft copolymers, which copolymer has a siloxane molecular chain originally incompatible with, and a molecular chain selected from the group consisting of polyimide, polyamide and polyether molecular chains compatible with, the thermoset resin (A), wherein the thermoplastics resin (C) is selected from the group consisting of polyimides and polyamides each having a siloxane molecular chain.
Claim 16
Dependent Claim
20 words
A cured resin product according to claim 9, wherein the thermoplastic resin is a polyimide having a siloxane molecular chain.
Claim 17
Dependent Claim
89 words
A resin composition comprising a thermosetting resin (A), a curing agent (B) and a thermoplastics resin (C), which is soluble in the resin (A), wherein the thermoplastics resin (C) is a copolymer selected from the group consisting of block copolymers and graft copolymers each comprising a molecular chain compatible with, and a molecular chain incompatible with, at least one of the thermosetting resin (A) and curing agent (B), wherein the thermoplastics resin (C) is selected from the group consisting of polyimides and polyamides each having a siloxane molecular chain.
Claim 18
Dependent Claim
89 words
A resin composition comprising a thermosetting resin (A), a curing agent (B) and a thermoplastics resin (C), which is soluble in the resin (A), wherein the thermoplastics resin (C) is a copolymer selected from the group consisting of block copolymers and graft copolymers each comprising a molecular chain compatible with, and a molecular chain incompatible with, at least one of the thermosetting resin (A) and curing agent (B), wherein the thermoplastics resin (C) is selected from the group consisting of polyimides and polyamides each having a siloxane molecular chain.
Claim 19
Dependent Claim
19 words
A resin composition according to claim 11, wherein the thermoplastic resin is a polyimide having a siloxane molecular chain.
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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) | 1998-12-18 | 1999-06-19 | 1999-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-18 | 2003-06-19 | 2003-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-18 | 2007-06-19 | 2007-12-19 | $7700.00 | Window Closed / Lapsed |