Patent US4141774A successfully refreshed from Google Patents.
US4141774A
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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 12:43
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.
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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) | 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 |