Patent US3673144A successfully refreshed from Google Patents.
US3673144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic molding compositions containing polyesters
Assignee: Hoechst AG
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Filing: 1969-07-02
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Granted: 1972-06-27
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Expires: 1989-07-02
Abstract
Abstract The present invention relates to polyester molding compositions from linear saturated polyesters, inert inorganic solid materials and 2,3-epoxy propanol esters of polyfunctional carboxylic acids of the formula WHICH MOLDING COMPOSITIONS MAY BE WORKED UP IN THE THERMOPLASTIC RANGE AND FROM WHICH MOLDED ARTICLES CAN BE MADE WHICH ARE FREE FROM FLASH-FORMATION.
Inventors
- 👤 Klaus Weissermel
- 👤 Rudolf Uebe
- 👤 Horst Pfister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
20 words
A thermoplastic polyester molding composition as claimed in claim 1, in which the linear saturated polyester is polyethylene glycol terephthalate.
Claim 2
Dependent Claim
19 words
A thermoplastic polyester molding composition as claimed in claim 1, in which the linear saturated polyester is polycyclohexane-1,4-dimethylol terephthalate.
Claim 3
Dependent Claim
33 words
A thermoplastic polyester molding composition as claimed in claim 2, in which the linear saturated polyester contains, in addition to terephthalic acid units, another aromatic or aliphatic dicarboxylic acid as the acid component.
Claim 4
Dependent Claim
42 words
A thermoplastic polyester molding composition as claimed in claim 4, in which the linear saturated polyester contains, in addition to terephthalic acid units, an aromatic or aliphatic dicarboxylic acid selected from the group consisting of isophthalic acid, naphthalene-1,6-dicarboxylic acid or adipic acid.
Claim 5
Dependent Claim
30 words
A thermoplastic polyester molding composition as claimed in claim 2, in which the linear saturated polyester contains, in addition to ethylene glycol units, another aliphatic diol as the diol component.
Claim 6
Dependent Claim
40 words
A thermoplastic polyester molding composition as claimed in claim 6, in which the linear saturated polyester cOntains, in addition to ethylene glycol units, an aliphatic diol selected from the group consisting of neopentyl glycol or butanediol-1,4 as the diol component.
Claim 7
Dependent Claim
24 words
A thermoplastic polyester molding composition as claimed in claim 1, in which the linear saturated polyester contains a hydroxycarboxylic acid as the acid component.
Claim 8
Dependent Claim
48 words
A thermoplastic polyester molding composition as claimed in claim 1, in which the polyester has a reduced specific viscosity within the range of from 0.6 to 2.0 dl/g as measured in a 1 percent solution in a 60:40 by weight mixture of phenol and tetrachloroethane at 25* C.
Claim 9
Dependent Claim
28 words
A thermoplastic polyester molding composition as claimed in claim 9, in which the polyester has a reduced specific viscosity within the range of from 0.9 to 1.6 dl/g.
Claim 10
Dependent Claim
28 words
A thermoplastic polyester molding composition as claimed in claim 9, in which the polyester has a reduced specific viscosity within the range of from 1.1 to 1.5 dl/g.
Claim 11
Dependent Claim
24 words
A thermoplastic polyester molding composition as claimed in claim 1, which contains an inert inorganic solid material having a particle size below 2 microns.
Claim 12
Dependent Claim
46 words
A thermoplastic polyester molding composition as claimed in claim 1, which contains an inert inorganic solid material selected from the group consisting of glass powder, talcum, kaolin, magnesium oxide, antimony trioxide, titanium dioxide, aluminum oxide, calcium carbonate, and alkali metal fluoride or alkaline earth metal fluoride.
Claim 13
Dependent Claim
28 words
A thermoplastic polyester molding composition as claimed in claim 1, which has a content of from 0.1 to 0.5 percent by weight of an inert inorganic solid material.
Claim 14
Dependent Claim
35 words
A thermoplastic polyester molding composition as claimed in claim 1, which has a content of from 0.05 to 0.6 percent by weight, calculated on the polyester, of a 2,3-epoxy-propanol ester of a polyfunctional carboxylic acid.
Claim 15
Dependent Claim
44 words
A thermoplastic polyester molding composition as claimed in claim 1, which contains 2,3-epoxy propanol ester containing, as the polyfunctional carboxylic acid, an acid selected from the group consisting of phthalic acid, naphthalene-1,6-dicarboxylic acid, trimellitic acid, pyromellitic acid, adipic acid, succinic acid or dodecane-dicarboxylic acid.
Claim 16
Dependent Claim
15 words
A molded article obtained from the thermoplastic polyester molding composition as claimed in claim 1.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |