US4362839A
Expired / Lapsed
US
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Modified polyalkylene terephthalate composition
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1980-09-05
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Granted: 1982-12-07
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Expires: 2000-09-05
Abstract
Abstract A modified polyalkylene terephthalate composition comprising polyalkylene terephthalate and polyoxyalkylene compound having metal salt of organic carboxylic acid. The composition, which can be used as a molding material, has improved workability, high crystallizing rate and excellent mechanical strength.
Inventors
- 👤 Satoshi Tonoki
- 👤 Kazushi Hirobe
- 👤 Tadashi Osawa
- 👤 Masahiko Nishigaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:37
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
141 words
A modified polyalkylene terephthalate composition comprising (A) 100 parts by weight of a polyester consisting substantially of polyalkylene terephthalate, with the alkylene unit thereof having from 2 to 15 carbon atoms; (B) a polyoxyalkylene compound having the general formula: ##STR4## wherein R 1 is hydrogent or an organic group of valence "m," R 2 is an aliphatic hydrocarbon group having 2 to 4 carbon atoms, l is zero or a positive integer and at least 2 for 1 molecule, R 3 is a group containing an alkali metal salt or an alkali earth metal salt of carboxylic acid, or partially hydrogen, and "m" is an integer of 1 to 6, and in an amount so that the amount of said alkali metal is 0.001 to 2.0 weight percent of said polyester; and (C) 0 to 200 weight parts of a filler.
Claim 2
Dependent Claim
141 words
A modified polyalkylene terephthalate composition comprising (A) 100 parts by weight of a polyester consisting substantially of polyalkylene terephthalate, with the alkylene unit thereof having from 2 to 15 carbon atoms; (B) a polyoxyalkylene compound having the general formula: ##STR4## wherein R 1 is hydrogent or an organic group of valence "m," R 2 is an aliphatic hydrocarbon group having 2 to 4 carbon atoms, l is zero or a positive integer and at least 2 for 1 molecule, R 3 is a group containing an alkali metal salt or an alkali earth metal salt of carboxylic acid, or partially hydrogen, and "m" is an integer of 1 to 6, and in an amount so that the amount of said alkali metal is 0.001 to 2.0 weight percent of said polyester; and (C) 0 to 200 weight parts of a filler.
Claim 3
Dependent Claim
13 words
The composition of claim 1, wherein said polyalkylene terephthalate is a polyethylene terephthalate.
Claim 4
Dependent Claim
13 words
The composition of claim 1, wherein said polyalkylene terephthalate is a polybutylene terephthalate.
Claim 5
Dependent Claim
18 words
The composition of claim 1, wherein said polyoxyalkylene compound has a molecular weight of between 200 to 20,000.
Claim 6
Dependent Claim
14 words
The composition of claim 4 wherein said molecular weight is between 200 to 6,000.
Claim 7
Dependent Claim
21 words
The composition of claim 1, wherein said polyoxyalkylene compound has at least one alkali metal salt of carboxylic acid per molecule.
Claim 8
Dependent Claim
58 words
The composition of claim 1, wherein said alkali metal salt of carboxylic acid is shown by the formula: ##STR5## wherein "X" is a group selected from the group consisting of aliphatic hydrocarbon, alicyclic hydrocarbon, aromatic hydrocarbon, hydrocarbon halogenated thereof and a mixture thereof, "M" is an alkali metal and "n" is an integer of from 1 to 5.
Claim 9
Dependent Claim
17 words
The composition of claim 8, wherein "X" is an aromatic hydrocarbon having 6 to 18 carbon atoms.
Claim 10
Dependent Claim
18 words
The composition of claim 6, wherein said alkali metal is 0.1 to 0.5 weight percent of said polyester.
Claim 11
Dependent Claim
18 words
The composition of claim 7 wherein "X" is a halogenated aromatic hydrocarbon having 6 to 18 carbon atoms.
Claim 12
Dependent Claim
14 words
The composition of claim 1, wherein said polyoxyalkylene compound is copolymerized with said polyester.
Claim 13
Dependent Claim
24 words
The composition of claim 11 wherein said polyoxyalkylene compound is monohydroxypolyoxyalkylene having said metal salt of carboxylic acid at one end of each molecule.
Claim 14
Dependent Claim
14 words
The composition of claim 1, wherein said polyoxyalkylene compound is admixed with said polyester.
Claim 15
Dependent Claim
12 words
The composition of claim 1, wherein said filler is a fire retardant.
Claim 16
Dependent Claim
12 words
The composition of claim 1, wherein said filler is an inorganic filler.
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) | 1985-12-06 | 1986-06-07 | 1986-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-06 | 1990-06-07 | 1990-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-06 | 1994-06-07 | 1994-12-07 | $7700.00 | Window Closed / Lapsed |