US4141774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-melt adhesive composition and process employing same
Assignee: Daicel Corp
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Filing: 1977-06-16
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Granted: 1979-02-27
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Expires: 1997-06-16
Abstract
Abstract A hot-melt adhesive composition containing a methoxymethylated terpolymer prepared from the corresponding terpolymer that is soluble in lower alcohols and contains a higher nylon salt or an ω-amino acid, or a lactam, each of which has more than 10 carbon atoms, and wherein the methoxymethylation ratio of the nylon copolymer is in the range of 10 to 30%.
Inventors
- 👤 Ken Ando
- 👤 Minoru Kamosaki
- 👤 Yoshinobu Ohya
- 👤 Sigeru Asai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:31
CPC Classifications
C; C09; C09J; C09J177/00; C08; C08G; C08G69/00; C08G69/48; C08G69/50; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31725; Y10T428/31739
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
82 words
A hot melt adhesive consisting essentially of a methoxymethylated nylon terpolymer of nylon 12 : nylon 6 : nylon 66, copolymerized in a weight ratio of 24-45 : 25-45 : 25-45, said nylon terpolymer having a melting point of less than 150° C. and having a methoxymethylation ratio in the range of from 15 to 25%, wherein the methoxymethylation ratio is the ratio of nitrogen atoms bonded to methoxymethyl groups to the total number of nitrogen atoms contained in the nylon terpolymer.
Claim 2
Dependent Claim
82 words
A hot melt adhesive consisting essentially of a methoxymethylated nylon terpolymer of nylon 12 : nylon 6 : nylon 66, copolymerized in a weight ratio of 24-45 : 25-45 : 25-45, said nylon terpolymer having a melting point of less than 150° C. and having a methoxymethylation ratio in the range of from 15 to 25%, wherein the methoxymethylation ratio is the ratio of nitrogen atoms bonded to methoxymethyl groups to the total number of nitrogen atoms contained in the nylon terpolymer.
Claim 3
Dependent Claim
62 words
An adhesive according to claim 1 containing from 0.5 to 8 weight percent, based on the weight of said terpolymer, of a hardener selected from the group consisting of tartaric acid, maleic acid, crotonic acid, malonic acid, succinic acid, oxalic acid, adipic acid, citric acid, o-, m- and p-hydroxybenzoic acid, 2,4-dihydroxybenzoic acid, 2-hydroxy-4-methoxybenzoic acid, hypophosphorous acid, p-toluenesulfonic acid and chromic acid anhydride.
Claim 4
Dependent Claim
21 words
An adhesive according to claim 1 in the form of a film having a thickness of from 5 to 50 microns.
Claim 5
Dependent Claim
62 words
A process for adhering together fibrous substrates which comprises placing between said substrates a film of adhesive as claimed in claim 3 and then pressing said substrates together at a pressure of 0.01 to 1 kg/cm 2 , at a temperature of 100° to 160° C. for 0.2 to 20 seconds so that said film melts and adhesively secures together said substrates.
Claim 6
Dependent Claim
62 words
A process for adhering together metal substrates which comprises placing between said substrates a film of adhesive as claimed in claim 3 and then pressing said substrates together at a pressure of 5 to 10 kg/cm 2 , at a temperature of 120° to 180° C. for 0.2 to 30 minutes so that said film melts and adhesively secures together said substrates.
References Cited (Backward Citations)
US2430866A
Cited
US2542288A
Cited
US2430860A
Cited
US2597855A
Cited
GB1115035A
Cited
US3515702A
Cited
US3679638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |