US4276208A
Expired / Lapsed
US
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Glass fiber-reinforced thermoplastic polyester composition
Assignee: Teijin Ltd
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Filing: 1979-10-09
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Granted: 1981-06-30
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Expires: 1999-10-09
Abstract
Abstract A glass fiber-reinforced thermoplastic polyester composition comprising (A) 100 parts by weight of polyethylene terephthalate having an intrinsic viscosity, measured at 35° C. in ortho-chlorophenol, of from 0.4 to 0.9, (B) from 0.05 to 3 parts by weight of a salt of montan wax, (C) from 5 to 200 parts by weight of glass fibers having an average length of at least 0.2 mm, and (D) from 0 to 5 parts by weight of an epoxy compound having at least two epoxy groups in the molecule.
Inventors
- 👤 Yoshinari Ogawa
- 👤 Teruhisa Fukumoto
- 👤 Kohichi Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:49
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K3/00; C08K3/40; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08L; C08L63/00; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
86 words
A glass fiber-reinforced thermoplastic polyester composition comprising (A) 100 parts by weight of polyethylene terephthalate having an intrinsic viscosity, measured at 35° C. in ortho-chlorophenol, of from 0.4 to 0.9, (B) from 0.05 to 3 parts by weight of a salt of montan wax, (C) from 5 to 200 parts by weight of glass fibers having an average length of at least 0.2 mm, and (D) from 0 to 5 parts by weight of an epoxy compound having at least two epoxy groups in the molecule.
Claim 2
Dependent Claim
86 words
A glass fiber-reinforced thermoplastic polyester composition comprising (A) 100 parts by weight of polyethylene terephthalate having an intrinsic viscosity, measured at 35° C. in ortho-chlorophenol, of from 0.4 to 0.9, (B) from 0.05 to 3 parts by weight of a salt of montan wax, (C) from 5 to 200 parts by weight of glass fibers having an average length of at least 0.2 mm, and (D) from 0 to 5 parts by weight of an epoxy compound having at least two epoxy groups in the molecule.
Claim 3
Dependent Claim
35 words
The composition of claim 1 which further contains at least one additive selected from the group consisting of nucleating agents, coloring agents, stabilizers, fire retardants, ultraviolet absorbers, antioxidants, lubricants, coloration inhibitors, fillers and antistatic agents.
Claim 4
Dependent Claim
71 words
The composition of claim 1 which further contains a coloration inhibitor selected from the group consisting of (i) compounds of the formula ##STR3## wherein R's are identical or different and each represents a hydrogen atom, a monovalent hydrocarbon group, or the group --OR' in which R' represents a hydrogen atom or a monovalent hydrocarbon group, (ii) compounds of the formula ##STR4## wherein R is as defined, and (iii) hindered phenol compounds.
Claim 5
Dependent Claim
24 words
The composition of claim 1 wherein the glass fibers are surface-treated with an epoxy compound having at least two epoxy groups in the molecule.
Claim 6
Dependent Claim
32 words
The composition of claim 1 wherein the montan wax salt is selected from the group consisting of neutral salts of montax wax, partially neutralized salts of montax wax, and montan wax esters.
Claim 7
Dependent Claim
24 words
The composition of claim 1 wherein the montan wax salt contains at least one metal of groups I to III of the periodic table.
Claim 8
Dependent Claim
23 words
The composition of claim 6 wherein the metal is selected from the group consisting of lithium, sodium, potassium, barium, magnesium, calcium and aluminum.
Claim 9
Dependent Claim
23 words
The composition of claim 1 wherein the salt of montan wax is present in an amount of 0.1 to 2 parts by weight.
Claim 10
Dependent Claim
19 words
The composition of claim 1 wherein the glass fibers have an average length of from 0.2 to 10 mm.
Claim 11
Dependent Claim
21 words
The composition of claim 3 wherein the coloration inhibitor is present in an amount of 0.01 to 2 parts by weight.
Claim 12
Dependent Claim
32 words
The composition of claim 4 wherein the epoxy compound on the glass fibers are present in an amount of 0.1 to 10% by weight, based on the weight of the glass fibers.
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) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |