US4963618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycarbonate resin composition with dienic impact modifiers
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1988-07-13
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Granted: 1990-10-16
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Expires: 2008-07-13
Abstract
Abstract A polycarbonate resin composition which comprises: 50-80% by weight of a polycarbonate resin, 20-45% by weight of a poly(1,4-butylene terephthalate) resin and 5-30% by weight of an impact modifier, based on the resin composition, respectively, the impact modifier being a core-shell polymer comprising a core of a polybutadiene in amounts of 40-80% by weight and a shell of a methyl methacrylate polymer which has a glass transition temperature of not less than 60° C. in amounts of 60-20% by weight, based on the core-shell polymer, respectively.
Inventors
- 👤 Ichiro Sasaki
- 👤 Junji Oshima
- 👤 Minoru Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:16
CPC Classifications
C; C08; C08L; C08L69/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
A polycarbonate resin composition which comprises: 50-80% by weight of a polycarbonate resin, 20-45% by weight of a poly(1,4-butylene terephthalate) resin and 5-30% by weight of an impact modifier, based on the resin composition, respectively, the impact modifier being a core-shell polymer comprising a core consisting essentially of a polycarbonate in amounts of 40-80% by weight and a shell of a homopolymer of a copolymer of methyl methacrylate which has a glass transition temperature of not less than 60° C. in amounts of 60-20% by weight, based on the core-shell polymer, respectively.
Claim 2
Dependent Claim
92 words
A polycarbonate resin composition which comprises: 50-80% by weight of a polycarbonate resin, 20-45% by weight of a poly(1,4-butylene terephthalate) resin and 5-30% by weight of an impact modifier, based on the resin composition, respectively, the impact modifier being a core-shell polymer comprising a core consisting essentially of a polycarbonate in amounts of 40-80% by weight and a shell of a homopolymer of a copolymer of methyl methacrylate which has a glass transition temperature of not less than 60° C. in amounts of 60-20% by weight, based on the core-shell polymer, respectively.
Claim 3
Dependent Claim
40 words
The polycarbonate resin compositions as claimed in claim 1, wherein the shell is composed of a copolymer of methyl methacrylate with at least one of aromatic monovinyl monomers, monovinyl cyanide monomers, acrylate monomers and methacrylate monomers other than methyl methacrylate.
Claim 4
Dependent Claim
21 words
The polycarbonate resin composition as claimed in claim 1, wherein the shell is a cross-linked homopolymer or copolymer of methyl methacrylate.
Claim 5
Dependent Claim
38 words
The polycarbonate resin composition as claimed in claim 3, wherein the copolymer is a copolymer of methyl methacrylate with at least one of aromatic monovinyl monomers, monovinyl cyanide monomers, acrylate monomers and methacrylate monomers other than methyl methacrylate.
Claim 6
Dependent Claim
36 words
The polycarbonate resin composition as claimed in claim 3, wherein the shell is a cross-linked homopolymer or copolymer prepared with a cross linkable monomer in amounts of about 0.01-5% by weight based on the monomers used.
References Cited (Backward Citations)
FR2197930A1
Cited
US4180494A
Cited
EP0064648A2
Cited
US4539370A
Cited
EP0135779A2
Cited
EP0185103A1
Cited
EP0239157A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |