US5079275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurea resins from poly(aminoaromatic) compounds
Assignee: Dow Chemical Co
•
Filing: 1989-04-10
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Granted: 1992-01-07
•
Expires: 2009-04-10
Abstract
Abstract Disclosed is a class of poly(aminoaromatic) compounds (I) obtained by capping polymeric polyols or polythiols iwth aromatic amine groups wherein the latter groups are linked by --O-- or --S-- to the polyol (polythiol) residues. Also disclosed are the precursor poly(nitroaromatic) compounds (II) from which the compounds (I) are derived. The polyamines are characterized by amine reactivities in respect of isocyanate polyaddition reactions which allows for polymer reaction rates that are intermediate of prior art related polyamine compounds. Accordingly, the compounds (I) find their prime utility in the formation of synthetic resins containing polyurea linkages.
Inventors
- 👤 Visweswara R. Durvasula
- 👤 Fred A. Stuber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:39
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5024; C08G18/5027; C08G18/5072; C08G18/52; C08G65/00; C08G65/02; C08G65/32; C08G65/321; C08G65/322; C08G65/329; C08G65/333; C08G65/33379; C08G65/33386; C08G65/33389; C08G75/00; C08G75/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
113 words
A molded synthetic resin containing polurea linkages prepared by the reaction of a poly(aminoaromatic) compound having the formula ##STR3## wherein R is the residue after removal of hydroxyl groups or mercapto groups respectively of a polymeric polyol selected from the group consisting of polyoxyalkylene polyethers, polyester polyols, polyacetal polyols, polycarbonate polyols, polyesteramine polyols, resole polyols and the polybutadiene polyols, having a molecular weight of from about 400 to about 10,000 and a functionality n of from about 2 to about 6, y is 1 or 2 and A is selected from the group consisting of hydrogen and an inert substituent, with an organic polyisocyanate, optionally in the presence of polymeric polyols and/or extenders.
Claim 2
Dependent Claim
113 words
A molded synthetic resin containing polurea linkages prepared by the reaction of a poly(aminoaromatic) compound having the formula ##STR3## wherein R is the residue after removal of hydroxyl groups or mercapto groups respectively of a polymeric polyol selected from the group consisting of polyoxyalkylene polyethers, polyester polyols, polyacetal polyols, polycarbonate polyols, polyesteramine polyols, resole polyols and the polybutadiene polyols, having a molecular weight of from about 400 to about 10,000 and a functionality n of from about 2 to about 6, y is 1 or 2 and A is selected from the group consisting of hydrogen and an inert substituent, with an organic polyisocyanate, optionally in the presence of polymeric polyols and/or extenders.
Claim 3
Dependent Claim
14 words
A resin according to claim 1, wherein y in said poly(aminoaromatic) compound is 2.
Claim 4
Dependent Claim
30 words
A resin according to claim 1 wherein y in said poly(aminoaromatic) compound is 1 and said NH 2 group is in the ortho or para position relative to the --O--.
Claim 5
Dependent Claim
16 words
A resin according to claim 1 wherein said NH 2 group is in the ortho position.
Claim 6
Dependent Claim
14 words
A resin according to claim 1 wherein A in said poly(aminoaromatic) compound is hydrogen.
Claim 7
Dependent Claim
68 words
A resin according to claim 1 wherein in said poly(aminoaromatic) compound R is the residue after removal of hydroxyl groups of a polymeric polyol having a molecular weight of from about 1500 to about 6000 and a functionality n of from about 2 to about 4, y is 1 and said NH 2 group is in the ortho or para position relative to --O-- and A is hydrogen.
Claim 8
Dependent Claim
32 words
A resin according to claim 6 wherein R is the residue of a polypropyleneoxy-polyethyleneoxy glycol having a molecular weight of about 2,000, nj=2 and said NH 2 is in the para position.
Claim 9
Dependent Claim
32 words
A resin according to claim 6 wherein R is the residue of a polypropyleneoxy-polyethyleneoxy glycol having a molecular weight of about 2,000, n=2 and said NH 2 is in the ortho position.
Claim 10
Dependent Claim
32 words
A resin according to claim 6 wherein R is the residue of a polypropyleneoxy glycol having a molecular weight of about 2,000, n=2 and said NH 2 is in the ortho position.
Claim 11
Dependent Claim
34 words
A resin according to claim 6 wherein R is the residue of a polyethyleneoxy capped polypropyleneoxy triol having a molecular weight of about 5,000 n=3 and said NH 2 is in the ortho position.
Claim 12
Dependent Claim
59 words
A resin according to claim 1 wherein in said poly(aminoaromatic) compound R is the residue after removal of hydroxyl groups of a polymeric polyol having an average molecular weight of about 400 to about 500 and an average functionality of about 4, y is 1 and said NH 2 group is in the ortho position and A is hydrogen.
Claim 13
Dependent Claim
46 words
A resin according to claim 1 wherein R is the residue of a polypropyleneoxy glycol having a molecular weight of about 2,000, n=2, y is 2 and said NH 2 groups are in the ortho and para position relative to the --O-- and A is hydrogen.
Claim 14
Dependent Claim
38 words
A film cast from a solution of a synthetic resin containing polyurea linkages prepared by the reaction of a poly(aminoaromatic) compound according to claim 1 with an organic polyisocyanate, optionally in the presence of polymeric polyols and/or extenders.
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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) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |