Patent US5149734A successfully refreshed from Google Patents.
US5149734A
Expired / Lapsed
US
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Highly filled thermoplastic polyester molding compositions
Assignee: SABIC Global Technologies BV
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Filing: 1989-10-20
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Granted: 1992-09-22
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Expires: 2009-10-20
Abstract
Abstract A novel compositions is disclosed which comprises polybutylene terephthalate, polyethylene terephthalate, and 30-85% by total weight of barium sulfate of said molding composition.
Inventors
- 👤 Robert A. Fisher
- 👤 Keith N. Gray
- 👤 Lawrence R. Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:20
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
36 words
A molding composition consisting essentially of: (a) 15-30% by total weight of said composition of polybutylene terephthalate resin; (b) polyethylene terephthalate resin; and (c) from 50-75% by total weight of said molding composition of barium sulfate.
Claim 2
Dependent Claim
36 words
A molding composition consisting essentially of: (a) 15-30% by total weight of said composition of polybutylene terephthalate resin; (b) polyethylene terephthalate resin; and (c) from 50-75% by total weight of said molding composition of barium sulfate.
Claim 3
Dependent Claim
35 words
A molding composition which comprises: (a) 15-30% by total weight of said composition of polybutylene terephthalate resin; (b) polyethylene terephthalate resin; and (c) from 62-70% by total weight of said molding composition of barium sulfate.
Claim 4
Dependent Claim
35 words
A molding composition which comprises: (a) 15-30% by total weight of said composition of polybutylene terephthalate resin; (b) polyethylene terephthalate resin; and (c) from 62-70% by total weight of said molding composition of barium sulfate.
Claim 5
Dependent Claim
60 words
A molding composition which consists essentially of: (a) from 15-30% by total weight of composition polybutylene terephthalate; (b) from 8-25% by total weight of composition of polyethylene terephthalate; (c) from 0.01-5% by weight of composition of an external lubricant; (d) from 0.01-0.5% by total weight of composition of a phenolic antioxidant; and (e) from 62-70% by weight of barium sulfate.
Claim 6
Dependent Claim
60 words
A molding composition which consists essentially of: (a) from 15-30% by total weight of composition polybutylene terephthalate; (b) from 8-25% by total weight of composition of polyethylene terephthalate; (c) from 0.01-5% by weight of composition of an external lubricant; (d) from 0.01-0.5% by total weight of composition of a phenolic antioxidant; and (e) from 62-70% by weight of barium sulfate.
Claim 7
Dependent Claim
15 words
A molding composition as defined in claim 3, wherein the external lubricant is pentaerythritol tetrastearate.
Claim 8
Dependent Claim
14 words
A molding composition as defined in claim 3, wherein the antioxidant is tetrakis(methylene-3(3', 5'-di-tert-butyl-4-hydroxyphenyl)propionate)methane.
Claim 9
Dependent Claim
18 words
A molding composition as defined in claim 3, which includes a flame retardant amount of a flame retardant.
Claim 10
Dependent Claim
11 words
An article which is molded from the composition of claim 3.
Claim 11
Dependent Claim
33 words
A thermoplastic molding composition having ceramic like properties which consists essentially of: (a) polybutylene terephthalate resin; (b) polyethylene terephthalate; and (c) from 62-70% by total weight of said molding composition of barium sulfate.
Claim 12
Dependent Claim
33 words
A thermoplastic molding composition having ceramic like properties which consists essentially of: (a) polybutylene terephthalate resin; (b) polyethylene terephthalate; and (c) from 62-70% by total weight of said molding composition of barium sulfate.
Claim 13
Dependent Claim
32 words
A thermoplastic molding composition as defined in claim 8 which has from 15-30% by total weight of composition of polybutylene terephthalate and from 8-25% by total weight of composition of polyethylene terephalate.
References Cited (Backward Citations)
US3953394A
Cited
US3953394B1
Cited
US3764576A
Cited
US4043971A
Cited
US4780402A
Cited
US4351758A
Cited
US4444931A
Cited
DD230252A3
Cited
JPS60231763A
Cited
JPS62252460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-22 | 1996-03-23 | 1996-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-22 | 2000-03-23 | 2000-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-22 | 2004-03-23 | 2004-09-22 | $7700.00 | Window Closed / Lapsed |