US5212279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-melt adhesive and its use in polyimide film and printed circuit board
Assignee: Resonac Corp
•
Filing: 1990-10-22
•
Granted: 1993-05-18
•
Expires: 2010-10-22
Abstract
Abstract A hot-melt adhesive comprising a special polyamideimide or polyamide is excellent in heat resistance and adhesive strength and usable for providing substrates for printed circuit boards.
Inventors
- 👤 Yoshihiro Nomura
- 👤 Takashi Morinaga
- 👤 Toshiaki Fukushima
- 👤 Hiroshi Minamisawa
- 👤 Kazuhito Hanabusa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:17
CPC Classifications
C; C09; C09J; C09J179/00; C09J179/04; C09J179/08; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/14; C09J177/00; H; H05; H05K; H05K3/00; H05K3/38; H05K3/386; H05K1/00; H05K1/02; H05K1/03; H05K1/0393; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0129; H05K2201/0137; H05K2201/0154; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31721
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
214 words
A hot-melt adhesive comprising at least one member selected from the group consisting of a polymer having repeating units of the formula: ##STR27## wherein R 1 , R 2 , R 3 and R 4 are independently a hydrogen atom, a lower alkyl group, a lower alkoxy group or a halogen atom; X is the same or different group in every repeating unit and is a direct link, --O--, --S--, ##STR28## R 5 and R 6 are independently a hydrogen atom, a lower alkyl, group, a trifluoromethyl group, a trichloromethyl group or a phenyl group; Y is the same or different group in every repeating unit and represent by the formula: ##STR29## Ar is a divalent aromatic group; and Ar' is a trivalent aromatic group, and a polymer having repeating units of the formula: ##STR30## wherein m is zero or an integer of 1 to 4; R 1 ' is a lower alkyl group; R 2 ' is a lower alkyl group or a halogen atom; X' is the same or different group in every repeating unit and is a direct link, --O-- or ##STR31## R 5 ' and R 6 ' are independently a hydrogen atom, a lower alkyl group, a trifluoromethyl group or a phenyl group; and Y is as defined above.
Claim 2
Dependent Claim
214 words
A hot-melt adhesive comprising at least one member selected from the group consisting of a polymer having repeating units of the formula: ##STR27## wherein R 1 , R 2 , R 3 and R 4 are independently a hydrogen atom, a lower alkyl group, a lower alkoxy group or a halogen atom; X is the same or different group in every repeating unit and is a direct link, --O--, --S--, ##STR28## R 5 and R 6 are independently a hydrogen atom, a lower alkyl, group, a trifluoromethyl group, a trichloromethyl group or a phenyl group; Y is the same or different group in every repeating unit and represent by the formula: ##STR29## Ar is a divalent aromatic group; and Ar' is a trivalent aromatic group, and a polymer having repeating units of the formula: ##STR30## wherein m is zero or an integer of 1 to 4; R 1 ' is a lower alkyl group; R 2 ' is a lower alkyl group or a halogen atom; X' is the same or different group in every repeating unit and is a direct link, --O-- or ##STR31## R 5 ' and R 6 ' are independently a hydrogen atom, a lower alkyl group, a trifluoromethyl group or a phenyl group; and Y is as defined above.
Claim 3
Dependent Claim
17 words
A hot-melt adhesive according to claim 1, wherein the polymer has repeating units of the formula (I).
Claim 4
Dependent Claim
17 words
A hot-melt adhesive according to claim 2, wherein the polymer has repeating units of the formula: ##STR32##
Claim 5
Dependent Claim
17 words
A hot-melt adhesive according to claim 2, wherein the polymer has repeating units of the formula: ##STR33##
Claim 6
Dependent Claim
17 words
A hot-melt adhesive according to claim 1, wherein the polymer has repeating units of the formula (II).
Claim 7
Dependent Claim
17 words
A hot-melt adhesive according to claim 5, wherein the polymer has repeating units of the formula: ##STR34##
Claim 8
Dependent Claim
17 words
A hot-melt adhesive according to claim 5, wherein the polymer has repeating units of the formula: ##STR35##
Claim 9
Dependent Claim
17 words
A hot-melt adhesive according to claim 5, wherein the polymer has repeating units of the formula: ##STR36##
Claim 10
Dependent Claim
17 words
A hot-melt adhesive according to claim 5, wherein the polymer has repeating units of the formula: ##STR37##
Claim 11
Dependent Claim
15 words
A hot-melt adhesive according to claim 2, which is in the form of a sheet.
Claim 12
Dependent Claim
15 words
A hot-melt adhesive according to claim 5, which is in the form of a sheet.
Claim 13
Dependent Claim
22 words
A polyimide film having on one side or both sides thereof a layer or layers of the hot-melt adhesive of claim 1.
Claim 14
Dependent Claim
22 words
A polyimide film having on one side or both sides thereof a layer or layers of the hot-melt adhesive of claim 2.
Claim 15
Dependent Claim
21 words
A polyimide film according to claim 13, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR38##
Claim 16
Dependent Claim
21 words
A polyimide film according to claim 13, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR39##
Claim 17
Dependent Claim
22 words
A polyimide film having on one side or both sides thereof a layer or layers of the hot-melt adhesive of claim 5.
Claim 18
Dependent Claim
21 words
A polyimide film according to claim 16, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR40##
Claim 19
Dependent Claim
21 words
A polyimide film according to claim 16, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR41##
Claim 20
Dependent Claim
21 words
A polyimide film according to claim 16, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR42##
Claim 21
Dependent Claim
21 words
A polyimide film according to claim 16, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR43##
Claim 22
Dependent Claim
25 words
A substrate for flexible printed circuit boards obtained by adhering metal foils to a polyimide film via a layer of hot-melt adhesive of claim 1.
Claim 23
Dependent Claim
25 words
A substrate for flexible printed circuit boards obtained by adhering metal foils to a polyimide film via a layer of hot-melt adhesive of claim 2.
Claim 24
Dependent Claim
25 words
A substrate for flexible printed circuit boards obtained by adhering metal foils to a polyimide film via a layer of hot-melt adhesive of claim 5.
Claim 25
Dependent Claim
25 words
A substrate for flexible printed circuit boards according to claim 22, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR44##
Claim 26
Dependent Claim
26 words
A substrate for flexible printed circuit boards according to claim 22, wherein the hot melt adhesive comprises a polymer having repeating units of the formula: ##STR45##
Claim 27
Dependent Claim
25 words
A substrate for flexible printed circuit boards according to claim 23, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR46##
Claim 28
Dependent Claim
25 words
A substrate for flexible printed circuit boards according to claim 23, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR47##
Claim 29
Dependent Claim
25 words
A substrate for flexible printed circuit boards according to claim 23, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR48##
Claim 30
Dependent Claim
25 words
A substrate for flexible printed circuit boards according to claim 23, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR49##
Claim 31
Dependent Claim
25 words
A substrate for melt-based printed circuit boards obtained by adhering metal foils to a metal plate via a layer of hot-melt adhesive of claim 1.
Claim 32
Dependent Claim
25 words
A substrate for metal-based printed circuit boards obtained by adhering metal foils to a metal plate via a layer of hot-melt adhesive of claim 2.
Claim 33
Dependent Claim
25 words
A substrate for metal-based printed circuit boards obtained by adhering metal foils to a metal plate via a layer of hot-melt adhesive of claim 5.
Claim 34
Dependent Claim
25 words
A substrate for metal-based printed circuit boards according to claim 31, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR50##
Claim 35
Dependent Claim
25 words
A substrate for metal-based printed circuit boards according to claim 31, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR51##
Claim 36
Dependent Claim
25 words
A substrate for metal-based printed circuit boards according to claim 32, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR52##
Claim 37
Dependent Claim
25 words
A substrate for metal-based printed circuit boards according to claim 32, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR53##
Claim 38
Dependent Claim
25 words
A substrate for metal-based printed circuit boards according to claim 32, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR54##
Claim 39
Dependent Claim
25 words
A substrate for metal-based printed circuit boards according to claim 32, wherein the hot-melt adhesive comprises a polymer having repeating units of the formula: ##STR55##
Claim 40
Dependent Claim
40 words
A hot-melt adhesive according to claim 1, wherein Y is the same or different group in every repeating unit and is represented by the formula: ##STR56## wherein Ar' is a trivalent aromatic group selected from the group consisting of ##STR57##
Claim 41
Dependent Claim
27 words
A hot-melt adhesive according to claim 1, wherein X is the same or different group in every repeating unit and is a direct link, --O--, --S--, ##STR58##
Claim 42
Dependent Claim
36 words
A hot-melt adhesive according to claim 1, wherein Ar is a divalent aromatic group selected from the group consisting of ##STR59## and wherein Ar' is a trivalent aromatic group selected from the group consisting of ##STR60##
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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) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |