US4338426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermediate, copolymer resin and production thereof
Assignee: Resonac Corp
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Filing: 1981-08-06
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Granted: 1982-07-06
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Expires: 2001-08-06
Abstract
Abstract A polyimide-isoindroquinazolinedione-silicone copolymer resin produced by reacting (a) a diaminoamide, (b) a diaminosiloxane, (c) a diamine, and (d) a tetracarboxylic acid dianhydride to give a polyamide acid-silicone intermediate, which is then subjected to dehydration and ring closure, is excellent particularly in adhesiveness, moisture resistance, wear resistance and heat resistance. The polyamide acid-silicone intermediate is stable in the form of a varnish and usuable commercially as a raw material for the polyimide-isoindroquinazolinedione-silicone copolymer resin.
Inventors
- 👤 Hidetaka Sato
- 👤 Shunichiro Uchimura
- 👤 Hiroshi Suzuki
- 👤 Daisuke Makino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:56
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G77/00; C08G77/42; C08G77/452; C08G77/455; C08G73/0666; C08G73/0672; C08G73/0683; C08G73/0694; C08G73/1057; C08G73/106; C08G77/48; C08G77/54
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
71 words
A polyimide-isoindroquinazolinedione-silicone copolymer resin produced by reacting (a) a diaminoamide compound of the formula: ##STR7## wherein Ar is an aromatic residue, Y is SO 2 or CO, and one of amino groups and the Y--NH 2 group are positioned at ortho position each other, (b) a diaminosiloxane, (c) a diamine, and (d) a tetracarboxylic acid dianhydride, to give a polyamide acid-silicone intermediate, which is then subjected to dehydration and ring closure.
Claim 2
Dependent Claim
71 words
A polyimide-isoindroquinazolinedione-silicone copolymer resin produced by reacting (a) a diaminoamide compound of the formula: ##STR7## wherein Ar is an aromatic residue, Y is SO 2 or CO, and one of amino groups and the Y--NH 2 group are positioned at ortho position each other, (b) a diaminosiloxane, (c) a diamine, and (d) a tetracarboxylic acid dianhydride, to give a polyamide acid-silicone intermediate, which is then subjected to dehydration and ring closure.
Claim 3
Dependent Claim
49 words
A polyimide-isoindroquinazolinedione-silicone copolymer resin according to claim 1, wherein the diaminosiloxane is represented by the formula: ##STR8## wherein R is a bivalent hydrocarbon group, R' is a monovalent hydrocarbon group, each R and R' may be the same or different, and m is an integer of 1 or more.
Claim 4
Dependent Claim
15 words
A polyimide-isoindroquinazolinedione-silicone copolymer resin according to claim 1, wherein the diaminoamide compound is 4,4'-diaminodiphenyl ether-3-carbonamide.
Claim 5
Dependent Claim
19 words
A polyimide-isoindroquinazolinedione-silicone copolymer resin according to claim 1, wherein the diamine is 4,4'-diaminodiphenyl ether, 4,4'-diaminodiphenylmethane, or a mixture thereof.
Claim 6
Dependent Claim
24 words
A polyimide-isoindroquinazolinedione-silicone copolymer resin according to claim 1, wherein the tetracarboxylic acid dianhydride is 4,4'-benzophenonetetracarboxylic acid dianhydride, pyromellitic acid dianhydride, or a mixture thereof.
Claim 7
Dependent Claim
13 words
A polyimide-isoindroquinazolinedione-silicone copolymer resin according to claim 2, wherein the diaminosiloxane is 1,3-bis(aminopropyl)tetramethyldisiloxane.
Claim 8
Dependent Claim
56 words
A polyamide acid-silicone intermediate obtained by reacting (a) a diaminoamide compound of the formula: ##STR9## wherein Ar is an aromatic residue, Y is SO 2 or CO, and one of amino groups and the Y-NH 2 group are positioned at ortho position each other, (b) a diaminosiloxane, (c) a diamine, and (d) a tetracarboxylic acid dianhydride.
Claim 9
Dependent Claim
56 words
A polyamide acid-silicone intermediate obtained by reacting (a) a diaminoamide compound of the formula: ##STR9## wherein Ar is an aromatic residue, Y is SO 2 or CO, and one of amino groups and the Y-NH 2 group are positioned at ortho position each other, (b) a diaminosiloxane, (c) a diamine, and (d) a tetracarboxylic acid dianhydride.
Claim 10
Dependent Claim
49 words
A polyamide acid-silicone intermediate according to claim 7, wherein the diaminosiloxane is represented by the formula: ##STR10## wherein R is a bivalent hydrocarbon group, R' is a monovalent hydrocarbon group, each R and R' may be the same or different, and m is an integer of 1 or more.
Claim 11
Dependent Claim
15 words
A polyamide acid-silicone intermediate according to claim 7, wherein the diaminoamide compound is 4,4'-diaminodiphenyl ether-3-carbonamide.
Claim 12
Dependent Claim
19 words
A polyamide acid-silicone intermediate according to claim 7, wherein the diamine is 4,4'-diaminodiphenyl ether, 4,4'-diaminodiphenylmethane, or a mixture thereof.
Claim 13
Dependent Claim
24 words
A polyamide acid-silicone intermediate according to claim 7, wherein the tetracarboxylic acid dianhydride is 4,4'-benzophenonetetracarboxylic acid dianhydride, pyromellitic acid dianhydride, or a mixture thereof.
Claim 14
Dependent Claim
13 words
A polyamide acid-silicone intermediate according to claim 8, wherein the diaminosiloxane is 1,3-bis(aminopropyl)tetramethyldisiloxane.
Claim 15
Dependent Claim
95 words
A process for producing a polyimide-isoindroquinazolinedione-silicone copolymer resin which comprises reacting (a) a diaminodiamide compound of the formula: ##STR11## wherein Ar is an aromatic residue, Y is SO 2 or CO, and one of amino groups and the Y-NH 2 group are positioned at ortho position each other, (b) a diaminosiloxane, (c) a diamine, and (d) a tetracarboxylic acid dianhydride, in an inert solvent at a temperature of 80° C. or lower to give a polyamide acid-silicone intermediate, which is then subjected to dehydration and ring closure at a temperature of 350° C. or lower.
Claim 16
Dependent Claim
95 words
A process for producing a polyimide-isoindroquinazolinedione-silicone copolymer resin which comprises reacting (a) a diaminodiamide compound of the formula: ##STR11## wherein Ar is an aromatic residue, Y is SO 2 or CO, and one of amino groups and the Y-NH 2 group are positioned at ortho position each other, (b) a diaminosiloxane, (c) a diamine, and (d) a tetracarboxylic acid dianhydride, in an inert solvent at a temperature of 80° C. or lower to give a polyamide acid-silicone intermediate, which is then subjected to dehydration and ring closure at a temperature of 350° C. or lower.
Claim 17
Dependent Claim
72 words
A process for producing a polyamide acid-silicone intermediate which comprises reacting (a) a diaminodiamine compound of the formula: ##STR12## wherein Ar is an aromatic residue, Y is SO 2 or CO, and one of amino groups and the Y-NH 2 group are positioned at ortho position each other, (b) a diaminosiloxane, (c) a diamine, and (d) a tetracarboxylic acid dianhydride, in an inert solvent at a temperature of 80° C. or lower.
Claim 18
Dependent Claim
72 words
A process for producing a polyamide acid-silicone intermediate which comprises reacting (a) a diaminodiamine compound of the formula: ##STR12## wherein Ar is an aromatic residue, Y is SO 2 or CO, and one of amino groups and the Y-NH 2 group are positioned at ortho position each other, (b) a diaminosiloxane, (c) a diamine, and (d) a tetracarboxylic acid dianhydride, in an inert solvent at a temperature of 80° C. or lower.
Claim 19
Dependent Claim
31 words
A process according to claim 13 or 14, wherein about one mole of tetracarboxylic acid dianhydride (d) is used per mole of the total of the components (a), (b) and (c).
Claim 20
Dependent Claim
43 words
A process according to claim 13 or 14, wherein 5 to 30% by mole of the diaminoamide compound (a) and 0.1 to 50% by mole of the diaminosiloxane (b) are used based on the total amounts of the components (a), (b) and (c).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |