Patent US4222928A successfully refreshed from Google Patents.
US4222928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester composition
Assignee: Teijin Ltd
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Filing: 1978-11-07
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Granted: 1980-09-16
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Expires: 1998-11-07
Abstract
Abstract A novel polyester composition which can give shaped articles being free from warping and having superior mechanical and thermal properties. The polyester composition comprises (A) 100 parts by weight of an aromatic polyester, (B) 5 to 150 parts by weight of flat glass flakes, and based on the total weight of (A) and (B), (C) 0.01 to 10% by weight of an epoxy compound containing two epoxy groups, and optionally (D) 0.01 to 5% by weight of a phosphorus compound and/or (E) 0.5 to 50% by weight of a rubbery elastomer selected from the group consisting of copolymers containing 30 to 90% of an acrylic ester as a constituent monomer and poly(ether.ester) elastomers. Up to half of the flat glass flakes may be replaced by a powdery inorganic solid such as feldspar.
Inventors
- 👤 Takeo Kawamura
- 👤 Teruo Matsunaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:42
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08K; C08K3/00; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08L63/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
A composition comprising (A) 100 parts by weight of an aromatic polyester, (B) 5 to 150 parts by weight of flat glass flakes up to one-half of which may be replaced by a powdery inorganic solid, and (C) 0.01 to 10% by weight, based on the total weight of (A) and (B), of an epoxy compound containing two terminal epoxy groups selected from the group consisting of (i) diglycidyl polyether (mono- to deca-mers) obtained by the reaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with epichlorohydrin and (ii) diglycidyl ether obtained by the reaction of a glycol with epichlorohydrin.
Claim 2
Dependent Claim
97 words
A composition comprising (A) 100 parts by weight of an aromatic polyester, (B) 5 to 150 parts by weight of flat glass flakes up to one-half of which may be replaced by a powdery inorganic solid, and (C) 0.01 to 10% by weight, based on the total weight of (A) and (B), of an epoxy compound containing two terminal epoxy groups selected from the group consisting of (i) diglycidyl polyether (mono- to deca-mers) obtained by the reaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with epichlorohydrin and (ii) diglycidyl ether obtained by the reaction of a glycol with epichlorohydrin.
Claim 3
Dependent Claim
116 words
A composition comprising (A) 100 parts by weight of an aromatic polyester, (B) 5 to 150 parts by weight of flat glass flakes up to one-half of which may be replaced by a powdery inorganic solid, (C) 0.01 to 10% by weight, based on the total weight of (A) and (B), of an epoxy compound containing two terminal epoxy groups selected from the group consisting of (i) diglycidyl polyether (mono- to deca-mers) obtained by the reaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with epichlorohydrin and (ii) diglycidyl ether obtained by the reaction of a glycol with epichlorohydrin, and (D) 0.01 to 5% by weight, based on the total weight of (A) and (B), of a phosphorus compound.
Claim 4
Dependent Claim
116 words
A composition comprising (A) 100 parts by weight of an aromatic polyester, (B) 5 to 150 parts by weight of flat glass flakes up to one-half of which may be replaced by a powdery inorganic solid, (C) 0.01 to 10% by weight, based on the total weight of (A) and (B), of an epoxy compound containing two terminal epoxy groups selected from the group consisting of (i) diglycidyl polyether (mono- to deca-mers) obtained by the reaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with epichlorohydrin and (ii) diglycidyl ether obtained by the reaction of a glycol with epichlorohydrin, and (D) 0.01 to 5% by weight, based on the total weight of (A) and (B), of a phosphorus compound.
Claim 5
Dependent Claim
139 words
A composition comprising (A) 100 parts by weight of an aromatic polyester, (B) 5 to 150 parts by weight of flat glass flakes up to one-half of which may be replaced by a powdery inorganic acid, (C) 0.01 to 10% by weight, based on the total weight of (A) and (B), of an epoxy compound containing two terminal epoxy groups selected from the group consisting of (i) diglycidyl polyether (mono- to deca-mers) obtained by the reaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with epichlorohydrin and (ii) diglycidyl ether obtained by the reaction of a glycol with epichlorohydrin, and (D) 0.5 to 50% by weight, based on the total weight of (A) and (B), of a rubbery elastomer selected from the group consisting of copolymers containing 30 to 90% of an acrylic ester as a constituent monomer and poly (ether.ester) elastomers.
Claim 6
Dependent Claim
139 words
A composition comprising (A) 100 parts by weight of an aromatic polyester, (B) 5 to 150 parts by weight of flat glass flakes up to one-half of which may be replaced by a powdery inorganic acid, (C) 0.01 to 10% by weight, based on the total weight of (A) and (B), of an epoxy compound containing two terminal epoxy groups selected from the group consisting of (i) diglycidyl polyether (mono- to deca-mers) obtained by the reaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with epichlorohydrin and (ii) diglycidyl ether obtained by the reaction of a glycol with epichlorohydrin, and (D) 0.5 to 50% by weight, based on the total weight of (A) and (B), of a rubbery elastomer selected from the group consisting of copolymers containing 30 to 90% of an acrylic ester as a constituent monomer and poly (ether.ester) elastomers.
Claim 7
Dependent Claim
148 words
A composition comprising (A) 100 parts by weight of an aromatic polyester, (B) 5 to 150 parts by weight of flat glass flakes up to one-half of which may be replaced by a powdery inorganic solid, (C) 0.01 to 10% by weight, based on the total weight of (A) and (B), of an epoxy compound containing two terminal epoxy groups selected from the group consisting of (i) diglycidyl polyether (mono- to deca-mers) obtained by the reaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with epichlorohydrin and (ii) diglycidyl ether obtained by the reaction of a glycol with epichlorohydrin, (D) 0.01 to 5% by weight, based on the total weight of (A) and (B), of a phosphorus compound, and (E) 0.5 to 50% by weight of a rubbery elastomer selected from the group consisting of copolymers containing 30 to 90% of an acrylic ester as a constituent monomer and poly(ether.ester) elastomers.
Claim 8
Dependent Claim
148 words
A composition comprising (A) 100 parts by weight of an aromatic polyester, (B) 5 to 150 parts by weight of flat glass flakes up to one-half of which may be replaced by a powdery inorganic solid, (C) 0.01 to 10% by weight, based on the total weight of (A) and (B), of an epoxy compound containing two terminal epoxy groups selected from the group consisting of (i) diglycidyl polyether (mono- to deca-mers) obtained by the reaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with epichlorohydrin and (ii) diglycidyl ether obtained by the reaction of a glycol with epichlorohydrin, (D) 0.01 to 5% by weight, based on the total weight of (A) and (B), of a phosphorus compound, and (E) 0.5 to 50% by weight of a rubbery elastomer selected from the group consisting of copolymers containing 30 to 90% of an acrylic ester as a constituent monomer and poly(ether.ester) elastomers.
Claim 9
Dependent Claim
28 words
The composition of claim 1 wherein the flat glass flakes have a long diameter of not more than 1000 microns and an aspect ratio of at least 5.
Claim 10
Dependent Claim
23 words
The composition of claim 5 wherein the long diameter is from 1 to 500 microns and the aspect ratio is at least 10.
Claim 11
Dependent Claim
28 words
The composition of claim 2 wherein the flat glass flakes have a long diameter of from 1 to 500 microns and an aspect ratio of at least 10.
Claim 12
Dependent Claim
28 words
The composition of claim 3 wherein the flat glass flakes have a long diameter of from 1 to 500 microns and an aspect ratio of at least 10.
Claim 13
Dependent Claim
28 words
The composition of claim 4 wherein the flat glass flakes have a long diameter of from 1 to 500 microns and an aspect ratio of at least 10.
References Cited (Backward Citations)
US3361848A
Cited
US3560605A
Cited
US3969306A
Cited
US4010219A
Cited
US4080354A
Cited
US3886104A
Cited
US3909485A
Cited
US3965212A
Cited
US3950301A
Cited
US4035333A
Cited
US4073827A
Cited
US4040122A
Cited
US4111892A
Cited
US4141882A
Cited
US4157325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |