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US3946089A
Expired / Lapsed
US
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Block copolymer of polyamide and polyether, and its preparation and use
Assignee: Toyobo Co Ltd
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Filing: 1974-02-06
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Granted: 1976-03-23
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Expires: 1994-02-06
Abstract
Abstract A block copolymer of 99.8 to 90 % by weight of a polyamide segment and 0.2 to 10 % by weight of a polyether segment dispersed in an island state of not more than about 10 μ in particle size, the polyamide segment comprising at least one diamine component containing 100 to 50 mol % (preferably 100 to 70 mol %) of m-xylylenediamine or its mixture with p-xylylenediamine and at least one dicarboxylic acid component containing 100 to 50 mol % (preferably 100 to 70 mol %) of at least one aliphatic dicarboxylic acid having 6 to 12 carbon atoms, the polyether segment comprising at least one polyether having a molecular weight of 2,000 to 20,000 and an amino group or a carboxyl group at at least one terminal position thereof and the block copolymer having a scattering index of not less than 1.
Inventors
- 👤 Kaoru Furukawa
- 👤 Chiaki Tsukamoto
- 👤 Hiroshi Nagai
- 👤 Koichi Matsunami
- 👤 Hikoichi Nagano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:58
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/40; B; B32; B32B; B32B27/00; B32B27/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
132 words
A block copolymer of 99.8 to 90 % by weight of a polyamide segment and 0.2 to 10 % by weight of a polyether segment dispersed in an island state of not more than about 10 μ in particle size, the polyamide segment comprising at least one diamine component containing 100 to 50 mol % of m-xylylenediamine or its mixture with p-xylylenediamine and at least one dicarboxylic acid component containing 100 to 50 mol % of at least one aliphatic dicarboxylic acid having 6 to 12 carbon atoms, the polyether segment comprising at least one polyether having a molecular weight of 2,000 to 20,000 and an amino group or a carboxyl group at at least one terminal position thereof and the block copolymer having a scattering index of not less than 1.
Claim 2
Dependent Claim
132 words
A block copolymer of 99.8 to 90 % by weight of a polyamide segment and 0.2 to 10 % by weight of a polyether segment dispersed in an island state of not more than about 10 μ in particle size, the polyamide segment comprising at least one diamine component containing 100 to 50 mol % of m-xylylenediamine or its mixture with p-xylylenediamine and at least one dicarboxylic acid component containing 100 to 50 mol % of at least one aliphatic dicarboxylic acid having 6 to 12 carbon atoms, the polyether segment comprising at least one polyether having a molecular weight of 2,000 to 20,000 and an amino group or a carboxyl group at at least one terminal position thereof and the block copolymer having a scattering index of not less than 1.
Claim 3
Dependent Claim
24 words
The block copolymer according to claim 1, wherein the diamine component contains 100 to 70 mol % of m-xylylenediamine or its mixture with p-xylylenediamine.
Claim 4
Dependent Claim
31 words
The block copolymer according to claim 1, wherein the dicarboxylic acid component contains 100 to 70 mol % of at least one aliphatic dicarboxylic acid having 6 to 12 carbon atoms.
Claim 5
Dependent Claim
66 words
The block copolymer according to claim 1, wherein the diamine component contains 100 to 70 mol % of a mixture of m-xylylenediamine and p-xylylenediamine, the content of p-xylylenediamine being not more than about 30 % by weight based on the mixture, and wherein the dicarboxylic acid component contains 100 to 70 mol % of at least one aliphatic dicarboxylic acid having 6 to 12 carbon atoms.
Claim 6
Dependent Claim
38 words
The block copolymer according to claim 1, wherein the islands of the polyether segment are in a maximum size of not more than about 6 μ and in an average size of not more than about 3 μ.
Claim 7
Dependent Claim
22 words
The block copolymer according to claim 1, wherein the polyamide segment consists of m-xylyleneadipamide and the polyether segment consists of bis-aminopropyl(polyethylene oxide).
Claim 8
Dependent Claim
22 words
The block copolymer according to claim 1, wherein the polyamide segment consists of m-xylylene/p-xylylene/adipamide and the polyether segment consists of bis-aminopropyl(polyethylene oxide).
Claim 9
Dependent Claim
23 words
The block copolymer according to claim 1, wherein the polyamide segment consists of m-xylylenediamine/hexamethylenediamine/adipic acid and the polyether segment consists of bis-aminopropyl(polyethylene oxide).
Claim 10
Dependent Claim
11 words
A film made of the block copolymer according to claim 1.
Claim 11
Dependent Claim
52 words
The film according to claim 9, which has an initial Young's modulus at 20°C of not less than about 200 kg/mm 2 , a folding enduarance of not less than about 5,000 and an oxygen permeability coefficient at 30°C of not more than about 2 × 10 - 12 ml.cm/cm 2 .sec.cmHg.
Claim 12
Dependent Claim
68 words
A biaxially drawn film according to claim 9, which has a breaking strength in the mechanical and transverse directions of not less than about 10 kg/mm 2 , a breaking elongation in the mechanical and transverse directions of about 20 to 120 %, a folding endurance of not less than about 150,000 and a low temperature impact strength (at -40°C) of not less than about 6 kg.cm/25 μ.
Claim 13
Dependent Claim
23 words
The biaxially drawn film according to claim 10, wherein the polyamide segment consists of m-xylyleneadipamide and the polyether segment consists of bis-aminopropyl(polyether oxide).
Claim 14
Dependent Claim
23 words
The biaxially drawn film according to claim 10, wherein the polyamide segment consists of m-xylylene/p-xylylene/adipamide and the polyether segment consists of bis-aminopropyl-(polyethylene oxide).
Claim 15
Dependent Claim
158 words
A process for preparing the block copolymer according to claim 1 which comprises subjecting an aqueous slurry comprising at least one diamine component containing 100 to 50 mol % of m-xylylenediamine or its mixture with p-xylylenediamine and at least one dicarboxylic acid component containing 100 to 50 mol % of at least one aliphatic dicarboxylic acid having 6 to 12 carbon atoms to heat polymerization in the presence of at least one polyether having a molecular weight of 2,000 to 20,000 and an amino group or a carboxyl group at at least one terminal position thereof under a steam pressurized condition within a gauge pressure range of 5 to 15 kg/cm 2 up to the production of a polymer of a low degree of polymerization corresponding to a relative viscosity of about 1.2 to 1.5, releasing the steam so as to attain atmospheric pressure and then continuing the polymerization so as to produce a higher degree of polymerization.
Claim 16
Dependent Claim
38 words
The block copolymer according to claim 1, wherein the amount of polyether segment in said block copolymer is about 1 to 5% by weight and the corresponding amount of polyamide segment is about 99 to 95% by weight.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |