Patent US4250280A successfully refreshed from Google Patents.
US4250280A
Expired / Lapsed
US
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Thermoplastic blockcopolyetherester composition having improved thermal stability
Assignee: Toray Industries Inc
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Filing: 1979-05-11
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Granted: 1981-02-10
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Expires: 1999-05-11
Abstract
Abstract Disclosed is a blockcopolyetherester composition stabilized by the incorporation of a polysulfide polymer. Products prepared from this composition exhibit an excellent thermal stability as well as UV-light resistance.
Inventors
- 👤 Chiaki Tanaka
- 👤 Nagayoshi Naito
- 👤 Yoko Furuta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:24
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/672; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
108 words
A thermoplastic blockcopolyetherester composition which comprises (A) a blockcopolyetherester consisting essentially of a multiplicity of recurring intralinear long chain polyether soft segments and short chain polyester hard segments, said long chain polyether soft segments having a molecular weight of between 200 and 6,000, with and the short chain polyester units constituting about 15 to 90% by weight of the blockcopolyetherester and the long chain polyether units constituting about 85 to 10% by weight of the blockcopolyetherester, and (B) an effective amount of polysulfide represented by the general formula HS--C.sub.2 H.sub.4 --O--CH.sub.2 --O--C.sub.2 H.sub.4 --O--S--S.sub.n C.sub.2 H.sub.4 --O--C.sub.2 H.sub.4 --SH wherein n is an integer of 4 to 100.
Claim 2
Dependent Claim
108 words
A thermoplastic blockcopolyetherester composition which comprises (A) a blockcopolyetherester consisting essentially of a multiplicity of recurring intralinear long chain polyether soft segments and short chain polyester hard segments, said long chain polyether soft segments having a molecular weight of between 200 and 6,000, with and the short chain polyester units constituting about 15 to 90% by weight of the blockcopolyetherester and the long chain polyether units constituting about 85 to 10% by weight of the blockcopolyetherester, and (B) an effective amount of polysulfide represented by the general formula HS--C.sub.2 H.sub.4 --O--CH.sub.2 --O--C.sub.2 H.sub.4 --O--S--S.sub.n C.sub.2 H.sub.4 --O--C.sub.2 H.sub.4 --SH wherein n is an integer of 4 to 100.
Claim 3
Dependent Claim
26 words
A thermoplastic blockcopolyetherester composition of claim 1, wherein the amount of the polysulfide is 0.05 to 30 parts by weight per 100 parts of the blockcopolyetherester.
Claim 4
Dependent Claim
28 words
A thermoplastic blockcopolyetherester composition of claim 1, wherein the amount of the polysulfide is 0.1 to 20 parts by weight per 100 parts by weight of the blockcopolyetherester.
Claim 5
Dependent Claim
28 words
A thermoplastic blockcopolyetherester composition of claim 1, wherein the amount of the polysulfide is 0.3 to 2.0 parts by weight per 100 parts by weight of the blockcopolyetherester.
Claim 6
Dependent Claim
65 words
A thermoplastic blockcopolyetherester composition of claim 1, wherein said short chain polyester units of the blockcopolyetherester(A) comprise polycondensation products from the dicarboxylic acid component selected from the group consisting of aromatic, aliphatic and alicyclic dicarboxylic acids having a carbon number of 6 to 20, and diol component selected from the group consisting of alkylene and cycloalkylen glycols having a carbon number of 2 to 8.
Claim 7
Dependent Claim
21 words
A thermoplastic blockcopolyetherester composition of claim 5, wherein more than 50 mol % of said dicarboxylic acid is aromatic dicarboxylic acid.
Claim 8
Dependent Claim
20 words
A thermoplastic blockcopolyetherester composition of claim 5, wherein more than 50 mol % of said dicarboxylic acid is terephthalic acid.
Claim 9
Dependent Claim
18 words
A thermoplastic blockcopolyetherester composition of claim 1, wherein said long chain polyether units of the blockcopolyetherester(A) are polyalkylenether.
Claim 10
Dependent Claim
22 words
A thermoplastic blockcopolyetherester composition of claim 8, wherein said polyalkylenether is composed of an alkylen group having 2 to 9 carbon atoms.
Claim 11
Dependent Claim
14 words
A thermoplastic blockcopolyetherester composition of claim 8, wherein said polyalkylenether is poly(tetramethylen ether) glycol.
Claim 12
Dependent Claim
54 words
A thermoplastic blockcopolyetherester composition of claim 5 wherein said aromatic dicarboxylic acid is a member selected from the group consisting of terephthalic, isophthalic and phthalic acids, bi-benzoic acid, substituted dicarboxy compounds with two benzene nuclei such as bis(p-carboxyphenyl) methane, p-oxy(p-carboxyphenyl)benzoic acid, 2,6-naphthalene dicarboxylic acid, 1,5-naphthalene dicrboxylic acid, anthracene dicarboxylic acid and 4,4'-sulfonyl dibenzoic acid.
Claim 13
Dependent Claim
43 words
A thermoplastic blockcopolyetherester composition of claim 5 wherein said aliphatic and cycloaliphatic dicarboxylic acids are members selected from the group consisting of 1,4-cyclohexane dicarboxylic acid, 4'4-dicyclohexyl dicarboxylic acid, cyclopentane dicarboxylic acid, 1,3-cyclopentane dicarboxylic acid, adipic acid, sebacic acid, azelaic acid and dimeric acid.
Claim 14
Dependent Claim
55 words
A thermoplastic blockcopolyetherester composition of claim 5 wherein said diol used in the preparation of the blockcopolyetherester (A) is a member selected from the group consisting of diols with 2-15 carbon atoms such as ethylene, propylene, tetramethylene, pentamethylene, 2,2-dimethyltrimethylene, hexamethylene and decamethylene glycols, dihydroxy cyclohexane, cyclohexane dimethanol, resorcinol, hydroquinone, 1,5-dihydroxynaphthalene, bis(p-hydroxy)biphenyl, bis(p-hydroxyphenyl)methane and bis(p-hydroxyphenyl) propane.
Claim 15
Dependent Claim
51 words
A thermoplastic blockcopolyetherester composition of claim 8, wherein said long chain polyether unit of the blockcopolyetherester (A) comprises a glycol component, said glycol component being selected from the group consisting of poly(ethylene ether)glycol, poly(1,2- and 1,3-propylene ether)glycol, poly(tetramethylene ether)glycol, poly(1,2-butylene ether)glycol, poly(pentamethylene ether)glycol, poly(hexamethylene ether)glycol, poly(heptamethylene ether)glycol, poly(octamethylene ether)glycol, poly(nonamethylene ether)glycol.
References Cited (Backward Citations)
US3813368A
Cited
US3891604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-10 | 1984-08-11 | 1985-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-10 | 1988-08-11 | 1989-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-10 | 1992-08-11 | 1993-02-10 | $7700.00 | Window Closed / Lapsed |