US4652602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blow-moldable polycarbonate resin compositions
Assignee: General Electric Co
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Filing: 1985-06-04
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Granted: 1987-03-24
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Expires: 2005-06-04
Abstract
Abstract Articles of blow-molded polycarbonate resins are described, having improved flexural modulus. The method of improvement comprises the incorporation of mica particles or glass fiber into the blow-moldable resin as a reinforcing filler. Advantageously the incorporation does not significantly adversely affect the blow-moldability of polycarbonate resins.
Inventors
- 👤 Ping Y. Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:53
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K7/00; C08K7/02; C08K7/04; C08K7/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
42 words
A method of improving the flexural modulus of articles blow-molded from a polycarbonate resin composition without significantly adversely affecting the blow-moldability of the resin composition, which comprises; homogeneously blending from 1 to 25 parts by weight of mica particles into the composition.
Claim 2
Independent Claim
42 words
A method of improving the flexural modulus of articles blow-molded from a polycarbonate resin composition without significantly adversely affecting the blow-moldability of the resin composition, which comprises; homogeneously blending from 1 to 25 parts by weight of mica particles into the composition.
Claim 3
Dependent Claim
22 words
A blow-moldable thermoplastic resin composition, which comprises; a blend of an aromatic blow-moldable polycarbonate resin and a reinforcing proportion of mica particles.
Claim 4
Dependent Claim
22 words
A blow-moldable thermoplastic resin composition, which comprises; a blend of an aromatic blow-moldable polycarbonate resin and a reinforcing proportion of mica particles.
Claim 5
Dependent Claim
26 words
The composition of claim 2 wherein the proportion of mica particles is within the range of from 1 to 25 parts by weight of the resin.
Claim 6
Dependent Claim
41 words
The composition of claim 2 which further comprises; from 65 to 95 parts by weight of said resin; from 0 to 15 parts by weight of glass fiber; and from 0 to 15 parts by weight of an impact strength modifier.
Claim 7
Dependent Claim
37 words
The composition of claim 4 wherein mica particles are present in a proportion of from 5 to 23 parts by weight and glass fiber is present in a proportion of from 5 to 12 parts by weight.
Claim 8
Dependent Claim
12 words
The composition of claim 4 wherein the impact strength modifier is present.
Claim 9
Dependent Claim
15 words
The composition of claim 6 wherein said modifier is a selectively hydrogenated styrene-butadiene-styrene block copolymer.
Claim 10
Dependent Claim
48 words
An article, which comprises: a blow-moldable, thermoplastic body, said body comprising; a reinforcing agent filled, blow-molded, thermoplastic polycarbonate resin, said agent being mica particles; said body having a flexural modulus of at least 27,000 Kg/cm 2 and a notched Izod impact strength of at least about 5 Kg-cm/cm.
Claim 11
Dependent Claim
48 words
An article, which comprises: a blow-moldable, thermoplastic body, said body comprising; a reinforcing agent filled, blow-molded, thermoplastic polycarbonate resin, said agent being mica particles; said body having a flexural modulus of at least 27,000 Kg/cm 2 and a notched Izod impact strength of at least about 5 Kg-cm/cm.
Claim 12
Dependent Claim
14 words
The article of claim 8 wherein the body further comprises an impact modifier ingredient.
Claim 13
Dependent Claim
15 words
The article of claim 9 wherein the modifier is a selectively hydrogenated styrene-butadiene-styrene block copolymer.
References Cited (Backward Citations)
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US3577378A
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US3488317A
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US3678079A
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US4056504A
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US4474999A
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US4469861A
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US4469852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |