US4335188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminates
Assignee: KURAUAY COMPANY Ltd
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Filing: 1980-05-22
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Granted: 1982-06-15
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Expires: 2000-05-22
Abstract
Abstract Laminated structures consisting of two or more adherend members selected from a variety of materials such as metals and plastics bonded together with adhesive layers of hot melt adhesive of a polyester made from terephthalic acid or a dicarboxylic acid mixture containing at least 85 mole % of terephthalic acid, 0.65 to 0.97 mole per mole of terephthalic acid or dicarboxylic acid mixture of 1,4-butanediol or a polymethylene glycol mixture containing at least 80 mole % of 1,4-butanediol and 0.03 to 0.35 mole per mole of said terephthalic acid or dicarboxylic acid mixture of polyethylene glycol having a molecular weight of 150 to 550, the total amount of the diol constituents being one mole per mole of said terephthalic acid or dicarboxylic acid mixture, said polyester in the laminated structures having a crystallinity of not less than 25% and being substantially free from spherulites, can retain the high bonding strength of the adhesive for a prolonged period of time and at the same time are excellent in resistance to heat and hot water.
Inventors
- 👤 Keishiro Igi
- 👤 Ishii Masao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:02
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/36; B32B15/00; B32B15/04; B32B15/08; B32B15/09; B32B21/00; B32B21/04; B32B21/08; B32B27/06; B32B27/08; B32B27/10; B32B27/12; B32B7/00; B32B7/04; B32B7/12; B32B9/00; B32B9/005; B32B9/04; B32B9/045; C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/672; C09; C09J; C09J167/00; C09J167/02; C09J167/025; B32B2311/00; B32B2315/00; B32B2315/02; B32B2317/00; B32B2317/12; B32B2317/16; B32B2367/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31786; Y10T428/3179
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
122 words
A laminated structure comprising at least two adherends bonded together with a polyester made from terephthalic acid or a dicarboxylic acid mixture containing at least 85 mole % of terephthalic acid, 0.65 to 0.97 mole per mole of said terephthalic acid or dicarboxylic acid mixture of 1,4-butanediol or a polymethylene glycol mixture containing at least 80 mole % of 1,4-butanediol and 0.030 to 0.35 mole per mole of said terephthalic acid or dicarboxylic acid mixture of polyethylene glycol having a molecular weight of 150 to 550, the total amount of the diol constituents being one mole per mole of said terephthalic acid or dicarboxylic acid mixture, said polyester having a crystallinity of not less than 25% and being substantially free from spherulites.
Claim 2
Dependent Claim
122 words
A laminated structure comprising at least two adherends bonded together with a polyester made from terephthalic acid or a dicarboxylic acid mixture containing at least 85 mole % of terephthalic acid, 0.65 to 0.97 mole per mole of said terephthalic acid or dicarboxylic acid mixture of 1,4-butanediol or a polymethylene glycol mixture containing at least 80 mole % of 1,4-butanediol and 0.030 to 0.35 mole per mole of said terephthalic acid or dicarboxylic acid mixture of polyethylene glycol having a molecular weight of 150 to 550, the total amount of the diol constituents being one mole per mole of said terephthalic acid or dicarboxylic acid mixture, said polyester having a crystallinity of not less than 25% and being substantially free from spherulites.
Claim 3
Dependent Claim
29 words
The laminated structure of claim 1, wherein the adherends are made of at least one material selected from the group consisting of metals, plastics, ceramics, wood, paper and fibers.
Claim 4
Dependent Claim
18 words
The laminated structure of claim 1, wherein the polyester consists essentially of terephthalic acid, 1,4-butanediol and polyethylene glycol.
Claim 5
Dependent Claim
19 words
The laminated structure of claim 1, wherein the polyester consists essentially of terephthalic acid, 1,4-butanediol, 1,6-hexanediol and polyethylene glycol.
Claim 6
Dependent Claim
44 words
The laminated structure of claim 1, wherein said dicarboxylic acid mixture contains at least 85 mole % of terephthalic acid and not more than 15 mole % of additional dicarboxylic acid selected from the group consisting of aromatic dicarboxylic acid and aliphatic dicarboxylic acid.
Claim 7
Dependent Claim
27 words
The laminated structure of claim 5, wherein said aromatic dicarboxylic acid is selected from the group consisting of isophthalic acid, 1,2-bis (p-carboxyphenoxy) ethane and 2,2-bis (p-carboxyphenyl) propane.
Claim 8
Dependent Claim
25 words
The laminated structure of claim 5, wherein said aliphatic dicarboxylic acid is selected from the group consisting of succinic acid, adipic acid and sebacic acid.
Claim 9
Dependent Claim
41 words
The laminated structure of claim 1, wherein said polymethylene glycol mixture contains at least 80 mole % of 1,4 butanediol and at most 20 mole % of additional polymethylene glycol selected from the group consisting of glycols having 2-10 carbon atoms.
Claim 10
Dependent Claim
16 words
The laminated structure of claim 8, wherein said polymethylene glycol of 2-10 carbon atoms is 1,6-hexanediol.
Claim 11
Dependent Claim
18 words
The laminated structure of claim 1, wherein said polyethylene glycol has a molecular weight of 150 to 400.
Claim 12
Dependent Claim
30 words
The laminated structure of claim 1, wherein said polyethylene glycol is present in an amount of 0.05 to 0.2 mole per mole of said terephthalic acid or dicarboxylic acid mixture.
Claim 13
Dependent Claim
22 words
The laminated structure of claim 8, wherein said polymethylene glycol mixture contains at most 15 mole % of said additional polymethylene glycol.
Claim 14
Dependent Claim
22 words
The laminated structure of claim 8, wherein said polymethylene glycol mixture contains at most 10 mole % of said additional polymethylene glycol.
Claim 15
Dependent Claim
23 words
The laminated structure of claim 5, wherein said dicarboxylic acid mixture contains not more than 10 mole % of said additional dicarboxylic acid.
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) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |