US3839121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding using melt adhesives based on polyamides
Assignee: Veba Oel AG
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Filing: 1972-03-31
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Granted: 1974-10-01
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Expires: 1992-03-31
Abstract
Abstract Method of adhesively securing two substances together which comprises disposing between said substances melt adhesive composition comprising: A. 10-90 MOL PERCENT OF THE PRODUCT OF THE COPOLYMERIZATION OF AN ALIPHATIC, OPEN-CHAINED AND/OR CYCLIC DICARBOXYLIC ACID WITH 4-12 C-atoms and a cyclic diamine or a mixture of an aliphatic, open-chained and a cyclic diamine with 2-15 C-atoms, wherein at least half of the diamine component thereof is branched by alkyl groups bonded to carbon atoms in the main chain or in the ring with B. 90-10 MOL PERCENT OF A omega -AMINO ACID COMPONENT OR PRECURSOR THEREOF WITH 4-12 C-atoms, heating said adhesive composition and applying pressure to at least one of said substances.
Inventors
- 👤 K Schmitt
- 👤 F Gude
- 👤 S Brandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:06
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/36; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3602; Y10T442/3667
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
112 words
A METHOD OF ADHESIVELY SECURING TWO SUBSTANCES TOGETHER WHICH COMPRISES DISPOSING BETWEEN SAID SUBSTANCES A MELT ADHESIVE COMPOSITION COMPRISING: A. 10-90 MOLPERCENT OF THE PRODUCT OF THE CO-POLYMERIZATION OF AN ALIPHATIC, OPEN-CHAINED AND/OR CYCLIC DICARBOXYLIC ACID WITH 4-12 C-ATOMS AND A CYCLIC DIAMINE OR A MIXTURE OF AN ALIPHATIC, OPEN-CHAINED AND A CYCLIC DIAMINE WITH 2-15 C-ATOMS, WHEREIN AT LEAST HALF OF THE DIAMINE COMPONENT THEREOF IS BRANCHED BY ALKYL GROUPS BONDED TO CARBON ATOMS IN THE MAIN CHAIN OR IN THE RING WITH B. 90-10 MOLPERCENT OF A $-AMINO ACID COMPONENT OR PRECURSOR THEREOF WITH 4-12 C-ATOMS, HEATING SAID ADHESIVE COMPOSITION AND APPLYING PRESSURE TO AT LEAST ONE OF SAID SUBSTANCES.
Claim 2
Independent Claim
112 words
A METHOD OF ADHESIVELY SECURING TWO SUBSTANCES TOGETHER WHICH COMPRISES DISPOSING BETWEEN SAID SUBSTANCES A MELT ADHESIVE COMPOSITION COMPRISING: A. 10-90 MOLPERCENT OF THE PRODUCT OF THE CO-POLYMERIZATION OF AN ALIPHATIC, OPEN-CHAINED AND/OR CYCLIC DICARBOXYLIC ACID WITH 4-12 C-ATOMS AND A CYCLIC DIAMINE OR A MIXTURE OF AN ALIPHATIC, OPEN-CHAINED AND A CYCLIC DIAMINE WITH 2-15 C-ATOMS, WHEREIN AT LEAST HALF OF THE DIAMINE COMPONENT THEREOF IS BRANCHED BY ALKYL GROUPS BONDED TO CARBON ATOMS IN THE MAIN CHAIN OR IN THE RING WITH B. 90-10 MOLPERCENT OF A $-AMINO ACID COMPONENT OR PRECURSOR THEREOF WITH 4-12 C-ATOMS, HEATING SAID ADHESIVE COMPOSITION AND APPLYING PRESSURE TO AT LEAST ONE OF SAID SUBSTANCES.
Claim 3
Dependent Claim
35 words
A method according to claim 1 wherein in the resultant co-polyamide at least half of the diamine components contain at least two alkyl groups bonded to the carbon atoms in the main chain or ring.
Claim 4
Dependent Claim
36 words
A method according to claim 1 wherein the resultant co-polyamide at least half of the diamine components contain at least 3 alkyl groups bonded to the carbon atoms in the main chain or in the ring.
Claim 5
Dependent Claim
24 words
A methOd according to claim 1 wherein the resultant co-polyamide contains open-chained and cyclic diamine components in the molar ratio of 80:20 to 20:80.
Claim 6
Dependent Claim
85 words
A method according to claim 1 wherein the resultant co-polyamide contains 10-40 molpercent of a component of an aliphatic, open-chained and/or cyclic dicarboxylic acid with 4-12 carbon atoms and an equivalent number of components of a cyclic diamine or a mixture of an aliphatic, open-chained and a cyclic diamine with 2-15 carbon atoms, wherein at least half of the diamine component is branched and 0-40 molpercent thereof is a omega -aminocaproic acid and 20-80 molpercent thereof is a omega -amino acid with 7-12 carbon atoms.
Claim 7
Dependent Claim
72 words
A method according to claim 1 wherein the resultant co-polyamide contains 10-40 molpercent of a component of an aliphatic, open-chained and/or cyclic dicarboxylic acid with 4-12 carbon atoms, the equivalent rest being of a cyclic diamine or a mixture of an aliphatic, open-chained and a cyclic diamine with 2-15 carbon atoms, wherein at least half of the diamine component is branched and 90-60 molpercent of a component of a omega -aminocaproic acid.
Claim 8
Dependent Claim
17 words
A method according to claim 1 wherein at least one of the substances secured togethe is linen.
Claim 9
Dependent Claim
27 words
A method according to claim 1 wherein both of the substances secured together are linen and the adhesive is heated to a temperature above its melting point.
Claim 10
Dependent Claim
15 words
A method according to claim 8 wherein the adhesive has a melting point below 200*C.
Claim 11
Dependent Claim
21 words
A method according to claim 1 wherein the co-polyamide is the reaction product of acelaic acid, 1,3-bis-amino-methylcyclohexamine 3,3-dimethylhexamethylene diamine and caprolactam.
Claim 12
Dependent Claim
21 words
A method according to claim 1 wherein the copolyamide is the reaction product of adipic acid, 2,4,4-trimethylhexamethylene diamine, 1-amino-3-aminomethyl-3,5,5-cyclohexane and caprolactam.
Claim 13
Dependent Claim
26 words
A method according to claim 1 wherein the copolyamide is the reaction product of adipic acid, 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane, dodecanmethylene diamine, 2,4,4-trimethylhexamethylene diamine, caprolactam and omega -amino-undeconoic acid.
Claim 14
Dependent Claim
24 words
A method according to claim 1 wherein the copolyamide is formed by the condensation of adipic acid, acelaic acid, 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane, and omega -amino-undecanoic acid.
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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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |