US4153801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethers having terminal amino groups
Assignee: Lim Holding SA
•
Filing: 1976-10-26
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Granted: 1979-05-08
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Expires: 1996-10-26
Abstract
Abstract The invention relates to novel poly(thio)ethers having terminal amino groups, a process for their production and their application in the production of polyureas showing increased thermal stability and improved tensile and structural strength.
Inventors
- 👤 Oskar Schmidt
- 👤 Walter Sibral
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:09
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D233/74; C07D239/00; C07D239/02; C07D239/20; C07D239/22; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5054; C08G18/506; C08G18/52; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/333; C08G65/33396
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
62 words
An imidazolidinedione compound of the formula ##STR19## wherein: R 1 and R 2 independently of one another represent hydrogen or methyl; --X-- is --O-- or --S--; --b-- is bivalent polyalkylene ether or polyalkylenethio ether and said polyalkylene is a member selected from the group consisting of polyethylene, polypropylene, polybutylene, poly(ethylene-propylene), poly(ethylene-butylene) and poly(propylene-butylene) having a molecular weight of about 100 to 15,000.
Claim 2
Dependent Claim
62 words
An imidazolidinedione compound of the formula ##STR19## wherein: R 1 and R 2 independently of one another represent hydrogen or methyl; --X-- is --O-- or --S--; --b-- is bivalent polyalkylene ether or polyalkylenethio ether and said polyalkylene is a member selected from the group consisting of polyethylene, polypropylene, polybutylene, poly(ethylene-propylene), poly(ethylene-butylene) and poly(propylene-butylene) having a molecular weight of about 100 to 15,000.
Claim 3
Dependent Claim
13 words
A compound according to claim 1, wherein B represents a polyethylene ether group.
Claim 4
Dependent Claim
13 words
A compound according to claim 1, wherein B represents a polypropylene ether group.
Claim 5
Dependent Claim
25 words
A compound according to claim 1, wherein B represents a polyalkylene ether group containing ethylene ether groups and propylene ether groups in any given sequence.
Claim 6
Dependent Claim
16 words
A compound according to claim 1, wherein B represents a polyalkylene ether group derived from tetrahydrofurane.
Claim 7
Dependent Claim
28 words
A compound according to claim 1, wherein B represents a polyalkylene ether group containing ethylene ether groups and alkylene ether groups derived from tetrahydrofurane, in any given sequence.
Claim 8
Dependent Claim
28 words
A compound according to claim 1, wherein B represents a polyalkylene ether group containing propylene ether groups and alkylene ether groups derived from tetrahydrofurane, in any given sequence.
Claim 9
Dependent Claim
12 words
A compoud according to claim 1, represented by the formula (1) ##STR20##
Claim 10
Dependent Claim
12 words
A compound according to claim 1, represented by the formula (3) ##STR21##
Claim 11
Dependent Claim
12 words
A compound according to claim 1, represented by the formula (6) ##STR22##
Claim 12
Dependent Claim
12 words
A compound according to claim 1, represented by the formula (9) ##STR23##
References Cited (Backward Citations)
US3787405A
Cited
US3984606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |