Patent US2205276A successfully refreshed from Google Patents.
Patent US3855173A successfully refreshed from Google Patents.
US3855173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature stable modified aromatic amine-aldehyde molding powders modified with aromatic polycarboxylic acid, and molded article
Assignee: Monsanto Co
•
Filing: 1973-09-26
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Granted: 1974-12-17
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Expires: 1993-09-26
Abstract
Abstract Articles molded from powders of aromatic amine formaldehyde resin and aromatic polycarboxylic compound. The powders have been processed with heat in a shear field to advance the powder composition to the stage where further heating will evolve less than 2 per cent of the initial weight as volatiles. The molded article displays little or no tendency to blister, swell or distort during post-curing and is thermally stable at temperatures up to 600*F.
Inventors
- 👤 R Huck
- 👤 J Leblanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:10
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
10 words
A NUMBER AVERAGE MOLECUALR WEIGHT OF FROM 200 TO 1,000,
Claim 2
Dependent Claim
10 words
A NUMBER AVERAGE MOLECUALR WEIGHT OF FROM 200 TO 1,000,
Claim 3
Dependent Claim
34 words
AN ARTICLE OF MANUFACTURE MOLDED FROM A MOLDING POWDER COMPRISING A BLEND OF: A. AN AROMATIC POLYCARBOXYLIC IN WHICH R3 IS AN AROMATIC RADICAL OF THREE, FOUR, FIVE, OR SIX COMPOUND OF GENERAL FORMULA:
Claim 4
Dependent Claim
34 words
AN ARTICLE OF MANUFACTURE MOLDED FROM A MOLDING POWDER COMPRISING A BLEND OF: A. AN AROMATIC POLYCARBOXYLIC IN WHICH R3 IS AN AROMATIC RADICAL OF THREE, FOUR, FIVE, OR SIX COMPOUND OF GENERAL FORMULA:
Claim 5
Dependent Claim
28 words
The article of manufacture of claim 1, wherein the aromatic polycarboxylic compound is selected from the group consisting of benzophenone tetracarboxylic acid dianhydride, trimellitic anhydride and pyromellitic dianhydride.
Claim 6
Dependent Claim
22 words
AT LEAST TWO ARYL MOIETIES PER MOLECULAR, THE ARYL NUCLEUS OF EACH ARYL MOIETY CONTAINING FROM 6 THROUGH 10 CARBON ATOMS EACH,
Claim 7
Dependent Claim
22 words
AT LEAST TWO ARYL MOIETIES PER MOLECULAR, THE ARYL NUCLEUS OF EACH ARYL MOIETY CONTAINING FROM 6 THROUGH 10 CARBON ATOMS EACH,
Claim 8
Dependent Claim
22 words
at least two aryl moieties per molecule, the aryl nucleus of each aryl moiety containing from 6 through 10 carbon atoms each,
Claim 9
Dependent Claim
22 words
at least two aryl moieties per molecule, the aryl nucleus of each aryl moiety containing from 6 through 10 carbon atoms each,
Claim 10
Dependent Claim
9 words
at least one divalent bridging moiety of the formula:
Claim 11
Dependent Claim
9 words
at least one divalent bridging moiety of the formula:
Claim 12
Dependent Claim
9 words
AT LEAST ONE DIVALENT BRIDGING MOIETY OF THE FORMULA:
Claim 13
Dependent Claim
9 words
AT LEAST ONE DIVALENT BRIDGING MOIETY OF THE FORMULA:
Claim 14
Dependent Claim
33 words
The article of manufacture of claim 1, wherein the aromatic amine-aldehyde resin comprises a condensate of formaldehyde or acetaldehyde and an aromatic amine selected from the group consisting of aniline, o-toluidine and o-chloroaniline.
Claim 15
Dependent Claim
41 words
The article of manufacture of claim 1 produced by subjecting the molding powder simultaneously to temperature in the range of 450* to 650*F. and pressure in the range of 2,000 to 20,000 psi for a period of 10 to 200 minutes.
Claim 16
Dependent Claim
51 words
EITHER AT LEAST ONE -NH GROUP OR AT LEAST ONE-NH2, OR BOTH, PER EACH RESIN MOLECULE, ONE BOND OF WHICH IS DIRECTLY ATTACHED TO ONE OF SAID ARYL NUCLEI AND THE OTHER BOND OF WHICH IS ATTACHED TO ANOTHER OF SAID ARYL NUCLEI OR TO A RADICAL R1 AS DEFINED ABOVE,
Claim 17
Dependent Claim
51 words
EITHER AT LEAST ONE -NH GROUP OR AT LEAST ONE-NH2, OR BOTH, PER EACH RESIN MOLECULE, ONE BOND OF WHICH IS DIRECTLY ATTACHED TO ONE OF SAID ARYL NUCLEI AND THE OTHER BOND OF WHICH IS ATTACHED TO ANOTHER OF SAID ARYL NUCLEI OR TO A RADICAL R1 AS DEFINED ABOVE,
Claim 18
Dependent Claim
52 words
either at least one -NH group or at least one -NH2, or both, per each resin molecule, one bond of which is directly attached to one of said aryl nuclei and the other bond of which is attached to another of said aryl nuclei or to a radical R1 as defined above,
Claim 19
Dependent Claim
52 words
either at least one -NH group or at least one -NH2, or both, per each resin molecule, one bond of which is directly attached to one of said aryl nuclei and the other bond of which is attached to another of said aryl nuclei or to a radical R1 as defined above,
Claim 20
Dependent Claim
17 words
a number average of primary amine groups per said aryl moiety of less than about 0.99, and
Claim 21
Dependent Claim
17 words
a number average of primary amine groups per said aryl moiety of less than about 0.99, and
Claim 22
Dependent Claim
17 words
A NUMBER AVERAGE OF PRIMARY AMINE GROUPS PER SAID ARYL MOIETY OF LESS THAN ABOUT 0.99, AND
Claim 23
Dependent Claim
17 words
A NUMBER AVERAGE OF PRIMARY AMINE GROUPS PER SAID ARYL MOIETY OF LESS THAN ABOUT 0.99, AND
Claim 24
Dependent Claim
26 words
The article of manufacture of claim 1 which has been subjected to temperature in the range of 300*to 700*F. in a programmed sequence of increasing temperature.
Claim 25
Dependent Claim
19 words
The article of manufacture of claim 1 having uniformly dispersed therein from 10 to 80 weight percent of filler.
Claim 26
Dependent Claim
75 words
A PERCENT NITROGEN ACETYL OF FROM ABOUT 3 TO 30; WHEREIN THE RELATIVE PROPORTIONS OF AROMATIC POLYCARBOXYLIC COMPOUNDD AND AROMATIC AMINE-ALDEHYDE RESIN ARE SUCH THAT THE BLEND IS THERMOSETTABLE; AND WHEREIN THE BLEND HAS BEEN ADVANCED AT A TEMPERATURE IN THE RANGE OF 300* TO 600*F. FOR 10 MINUTES, AND THE VOLATILES GENERATED BY FURTHER HEA 600*F FOR 10 MINUTES, HAS BEEN REDUCED TO LESS THAN 2 PERCENT OF THE INITIAL WEIGHT OF THE BLEND.
Claim 27
Dependent Claim
75 words
A PERCENT NITROGEN ACETYL OF FROM ABOUT 3 TO 30; WHEREIN THE RELATIVE PROPORTIONS OF AROMATIC POLYCARBOXYLIC COMPOUNDD AND AROMATIC AMINE-ALDEHYDE RESIN ARE SUCH THAT THE BLEND IS THERMOSETTABLE; AND WHEREIN THE BLEND HAS BEEN ADVANCED AT A TEMPERATURE IN THE RANGE OF 300* TO 600*F. FOR 10 MINUTES, AND THE VOLATILES GENERATED BY FURTHER HEA 600*F FOR 10 MINUTES, HAS BEEN REDUCED TO LESS THAN 2 PERCENT OF THE INITIAL WEIGHT OF THE BLEND.
Claim 28
Dependent Claim
73 words
a percent nitrogen acetyl of from about 3 to 30; wherein the realtive proportions of aromatic polycarboxylic compound and aromatic amine-aldehyde resin are such that the blend is thermosettable; and wherein the blend has been advanced at a temperature in the range of 300* to 600*F., and the volatiles generated by further heating to 600*F. for 10 minutes, have been reduced to less than 2 percent of the initial weight of the blend.
Claim 29
Dependent Claim
73 words
a percent nitrogen acetyl of from about 3 to 30; wherein the realtive proportions of aromatic polycarboxylic compound and aromatic amine-aldehyde resin are such that the blend is thermosettable; and wherein the blend has been advanced at a temperature in the range of 300* to 600*F., and the volatiles generated by further heating to 600*F. for 10 minutes, have been reduced to less than 2 percent of the initial weight of the blend.
Claim 30
Dependent Claim
29 words
The article of manufacture of claim 1 wherein the aromatic polycarboxylic compound is benzophenone tetracarboxylic acid dianhydride and the aromatic amine-aldehyde resin comprises a condensate of aniline and formaldehyde.
References Cited (Backward Citations)
US3678008A
Cited
US3792020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |