US4920005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic polymer compositions
Assignee: Raychem Corp
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Filing: 1989-05-23
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Granted: 1990-04-24
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Expires: 2009-05-23
Abstract
Abstract This invention relates to novel curable compositions comprising (a) a first component comprising an aromatic polymer having a first preponderant repeat unit and (b) a second component comprising an acetylene, maleimide, or vinyl terminated poly(imide) or poly(isoimide) or precursor thereof, which second component is compatible with the first component, has 1 to 300 second preponderant repeat units which are different from the first preponderant repeat units of the first component, is substantially free of elemental sulfur and reactive divalent sulfur, and is present in an amount effective to substantially cure the composition. The compositions are useful as adhesives, coatings and matrix resins for fiber reinforced composites. They exhibit improved adhesion to various substrates, increased tensile strength and improved resistance to cracking. The invention also relates to the composition which contains a reinforcing filler. The invention also relates to the composition after it has been cured. The invention further relates to a multi-layered article for use in electronic devices, the article comprising a plurality of layers each comprising a cured composition of the invention with one or more intervening layers of conductive or semi-conductive material.
Inventors
- 👤 Frank Mercer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:47
CPC Classifications
C; C08; C08L; C08L81/00; C08L81/06; C08G; C08G61/00; C08G61/12; C08G61/127; C08L65/00; C08L67/00; C08L67/02; C08L67/03; C08L69/00; C08L71/00; C08L79/00; C08L79/04; C08L79/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31533; Y10T428/31721; Y10T428/31855; Y10T428/31942
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
152 words
An article comprising a substrate having on a surface thereof at least one layer of a curable composition comprising: (a) a first component comprising an aromatic polymer having a first preponderant repeat unit selected from the group consisting of (i) poly(sulfone) (ii) poly(aryl ether ketone) (iii) poly(carbonate) (iv) poly(arylate) (v) poly(imide) (vi) poly(benzimidozopyrolone), and (v) poly(imide isoindoquinazolinedione), said aromatic polymer being substantially free of acetylene, maleimide, or vinyl terminal groups, and (b) a second component comprising an acetylene, maleimide, or vinyl terminated poly(imide) or poly(isoimide) or precursor thereof, which second component is compatible with the first component, has 1 to 300 second preponderant repeat units which are different from the first preponderant repeat units, is substantially free of elemental sulfur and reactive divalent sulfur, and is present in an amount effective to substantially cure the composition to a gel content of at least about 10%, as measured by percent insolubles in chloroform.
Claim 2
Dependent Claim
152 words
An article comprising a substrate having on a surface thereof at least one layer of a curable composition comprising: (a) a first component comprising an aromatic polymer having a first preponderant repeat unit selected from the group consisting of (i) poly(sulfone) (ii) poly(aryl ether ketone) (iii) poly(carbonate) (iv) poly(arylate) (v) poly(imide) (vi) poly(benzimidozopyrolone), and (v) poly(imide isoindoquinazolinedione), said aromatic polymer being substantially free of acetylene, maleimide, or vinyl terminal groups, and (b) a second component comprising an acetylene, maleimide, or vinyl terminated poly(imide) or poly(isoimide) or precursor thereof, which second component is compatible with the first component, has 1 to 300 second preponderant repeat units which are different from the first preponderant repeat units, is substantially free of elemental sulfur and reactive divalent sulfur, and is present in an amount effective to substantially cure the composition to a gel content of at least about 10%, as measured by percent insolubles in chloroform.
Claim 3
Dependent Claim
19 words
An article according to claim 1, wherein said substrate has on said surface thereof a plurality of said layers.
Claim 4
Dependent Claim
19 words
An article according to claim 2, wherein there is a layer of conductive material interposed between two adjacent layers.
Claim 5
Dependent Claim
24 words
An acticle according to claim 3, wherein the layer of conductive material is non-continuous and forms a plurality of conductive paths across the article.
Claim 6
Dependent Claim
13 words
An article according to claim 4, further comprising at least one semi-conductor element.
Claim 7
Dependent Claim
12 words
An article according to claim 1, wherein said curable composition is cured.
Claim 8
Dependent Claim
24 words
An article according to claim 1 or 6, wherein said second component is of the formula: ##STR35## wherein n is 1 to about 300.
Claim 9
Dependent Claim
13 words
An article according to claim 7, wherein n is 1 to about 30.
Claim 10
Dependent Claim
23 words
An article according to claim 1 or 6, wherein said second component comprises from about 5% to about 35% of said curable composition.
Claim 11
Dependent Claim
25 words
An article according to claim 1 or 6, wherein said first component is a poly(sulfone) having the repeat unit ##STR36## as its preponderant repeat unit.
Claim 12
Dependent Claim
25 words
An article according to claim 1 or 6, wherein said first component is a poly(sulfone) having the repeat unit ##STR37## as its preponderant repeat unit.
Claim 13
Dependent Claim
30 words
An article according to claim 1 or 6, wherein said first component is a poly(aryl ether ketone) having a first preponderant repeat unit selected from the group consisting of ##STR38##
Claim 14
Dependent Claim
25 words
An article according to claim 1 or 6, wherein said first component is a poly(carbonate) having the repeat unit ##STR39## as its preponderant repeat unit.
Claim 15
Dependent Claim
25 words
An article according to claim 1 or 6, wherein said first component is a poly(arylate) having the repeat unit ##STR40## as its preponderant repeat unit.
Claim 16
Dependent Claim
25 words
An article according to claim 1 or 6, wherein said first component is a poly(imide) having the repeat unit ##STR41## as its preponderant repeat unit.
Claim 17
Dependent Claim
25 words
An article according to claim 1 or 6, wherein said first component is a poly(etherimide) having the repeat unit ##STR42## as its preponderant repeat unit.
Claim 18
Dependent Claim
26 words
An article according to claim 1 or 6, wherein said first preponderant repeat unit of said first component has isopropylidene or hexafluoroisopropylidene groups in its backbone.
Claim 19
Dependent Claim
38 words
An article according to claim 1 or 6, wherein said first preponderant repeat unit of said first component is ##STR43## where K is carbonyl or a direct bond, L is isopropylidene or hexafluoroisopropylidene, and M is oxygen, ##STR44##
Claim 20
Dependent Claim
25 words
An article according to claim 1 or 6, wherein the second component has a second preponderant repeat unit selected from the group consisting of ##STR45##
Claim 21
Dependent Claim
20 words
An article according to claim 1 or 6, wherein said curable composition has a moisture absorption less than about 2%.
Claim 22
Dependent Claim
20 words
An article according to claim 1 or 6, wherein said curable composition has a dielectric constant less than about 5.
Claim 23
Dependent Claim
35 words
An article according to claim 1 or 6, wherein said second component is a monomeric mixture of compounds of the formula ##STR46## in the respective molar ratio of n:(n-1):2 wherein n is 2 to 300.
Claim 24
Dependent Claim
23 words
An article according to claim 1 or 6, wherein said second component is of the formula ##STR47## wherein n is 1 to 300.
Claim 25
Dependent Claim
13 words
An article according to claim 23, wherein n is 1 to about 30.
Claim 26
Dependent Claim
23 words
An article according to claim 1 or 6, wherein said second component is of the formula: ##STR48## wherein n is 1 to 300.
Claim 27
Dependent Claim
13 words
An article according to claim 25, wherein n is 1 to about 30.
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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) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |