US3864428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester/polycarbonate/graft copolymer thermoplastic resin composition
Assignee: Teijin Ltd
•
Filing: 1973-08-27
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Granted: 1975-02-04
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Expires: 1993-08-27
Abstract
Abstract A thermoplastic resin composition which comprises A. 25 to 85 percent by weight of an aromatic polyester, B. 10 to 75 percent by weight of an aromatic polycarbonate, and C. 2 to 35 percent by weight of a graft copolymer of a butadiene polymer-vinyl monomer, THE PROPORTION OF THE BUTADIENE POLYMER COMPONENT IN THE GRAFT COPOLYMER BEING 1 TO 30 PERCENT BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE COMPONENTS (A), (B) and (C).
Inventors
- 👤 Yositugu Nakamura
- 👤 Ryoichi Hasegawa
- 👤 Hiroaki Kubota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
C; C08; C08L; C08L69/00; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
A THERMOPLASTIC RESIN COMPOSITION CONSISTING ESSENTIALLY OF A. 25 TO 85 PERCENT BY WEIGHT OF AN AROMATIC POLYESTER, B. 10 TO 75 PERCENT BY WEIGHT OF AN AROMATIC POLYCARBONATE, AND C. 2 TO 35 PERCENT BY WEIGHT OF A GRAFT COPOLYMER OF A BUTADIENE POLYMER-VINYL MONOMER WHICH IS SELECTED FROM THE GROUP CONSISTING OF METHACRYLIC ESTERS, AROMATIC MONOVINYL COMPOUNDS, VINYL CYANIDE COMPOUNDS, AND MIXTURES THEREOF, THE PROPORTION OF THE BUTADIENE POLYMER COMPONENT IN THE GRAFT POLYMER BEING 1 TO 30 PERCENT BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE COMPONENTS (A), (B) AND (C).
Claim 2
Dependent Claim
95 words
A THERMOPLASTIC RESIN COMPOSITION CONSISTING ESSENTIALLY OF A. 25 TO 85 PERCENT BY WEIGHT OF AN AROMATIC POLYESTER, B. 10 TO 75 PERCENT BY WEIGHT OF AN AROMATIC POLYCARBONATE, AND C. 2 TO 35 PERCENT BY WEIGHT OF A GRAFT COPOLYMER OF A BUTADIENE POLYMER-VINYL MONOMER WHICH IS SELECTED FROM THE GROUP CONSISTING OF METHACRYLIC ESTERS, AROMATIC MONOVINYL COMPOUNDS, VINYL CYANIDE COMPOUNDS, AND MIXTURES THEREOF, THE PROPORTION OF THE BUTADIENE POLYMER COMPONENT IN THE GRAFT POLYMER BEING 1 TO 30 PERCENT BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE COMPONENTS (A), (B) AND (C).
Claim 3
Dependent Claim
29 words
The composition of claim 1 wherein said aromatic polyester (A) is selected from the group consisting of polyethylene terephthalate, polytetramethylene terephthalate, polyhexamethylene terephthalate, polyethylene-2,6-naphthalate, polytetramethylene-2,6-naphthalate, polyhexamethylene-2,6-naphthalate, and mixture thereof.
Claim 4
Dependent Claim
26 words
The composition of claim 1 wherein said graft copolymer (C) is one prepared from a butadiene polymer having at least 50 mol percent of butadiene units.
Claim 5
Dependent Claim
18 words
The composition of claim 1 wherein the aromatic polycarbonate (B) is a polycarbonate of a di(mono-hydroxyphenyl)-substituted aliphatic hydrocarbon.
Claim 6
Dependent Claim
42 words
The composition of claim 1 consisting essentially of (A) 40 to 80 percent by weight of the aromatic polyester, (B) 20 to 60 percent by weight on the aromatic polycarbonate, and (C) 3 to 25 percent by weight of the graft copolymer.
Claim 7
Dependent Claim
14 words
The composition of claim 1 which is in the form of injection molded article.
Claim 8
Dependent Claim
56 words
The composition of claim 1 having an impact strength of at least 15 Kg cm/cm, a melt viscosity of 5 to 15 ( X 103) poises at 260*C., a heat deformation temperature at 18.5 Kg/cm2 of at least 70*C., a shrinkage at the time of molding of not more than 0.01 cm/cm, and good chemical resistance.
Claim 9
Dependent Claim
18 words
The composition of claim 7 wherein said composition has an impact strength of at least 20 Kg cm/cm.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |