US4035412A
Expired / Lapsed
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Methylene phosphonates of poly-diepoxidized polyalkylene polyamines
Assignee: Baker Petrolite LLC
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Filing: 1971-05-28
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Granted: 1977-07-12
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Expires: 1991-05-28
Abstract
Abstract Methylene phosphonates of poly-diepoxidized polyalkylene polyamines and to uses therefor, particularly as scale inhibitors, chelating agents, etc.
Inventors
- 👤 Patrick M. Quinlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:22
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5006; C08G59/502; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/14; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; C08G59/4007; C08G59/4071; Y; Y10; Y10S; Y10S507/00; Y10S507/927
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
Methylene phosphonates of poly-diepoxidized polyalkylene polyamines having (1) nitrogen-bonded methylene phosphonate units of the formula --CH 2 PO(OM) 2 where M is alkali metal, alkaline earth metal, hydrogen, amine-derived ammonium or ammonium, (2) at least one unit of the formula ##STR34## and (3) at least one unit of the formula ##STR35## the --CH 2 -- of the ##STR36## unit (2) being bonded to one terminal nitrogen of the polyalkylene polyamine and the --CH 2 -- of the ##STR37## unit (3) being bonded to the other terminal nitrogen of the polyalkylene polyamine, the poly-diepoxidized polyalkylene polyamine being the reaction product of polyalkylene polyamine and diepoxide.
Claim 2
Dependent Claim
104 words
Methylene phosphonates of poly-diepoxidized polyalkylene polyamines having (1) nitrogen-bonded methylene phosphonate units of the formula --CH 2 PO(OM) 2 where M is alkali metal, alkaline earth metal, hydrogen, amine-derived ammonium or ammonium, (2) at least one unit of the formula ##STR34## and (3) at least one unit of the formula ##STR35## the --CH 2 -- of the ##STR36## unit (2) being bonded to one terminal nitrogen of the polyalkylene polyamine and the --CH 2 -- of the ##STR37## unit (3) being bonded to the other terminal nitrogen of the polyalkylene polyamine, the poly-diepoxidized polyalkylene polyamine being the reaction product of polyalkylene polyamine and diepoxide.
Claim 3
Dependent Claim
17 words
The methylene phosphonates of poly-diepoxidized polyalkylene polyamines of claim 1 where the polyalkylene polyamines are polyethylene polyamines.
Claim 4
Dependent Claim
19 words
The methylene phosphonates of poly-diepoxidized polyalkylene polyamines of claim 2 where the polyethylene polyamines are of the formula ##STR38##
Claim 5
Dependent Claim
51 words
The methylene phosphonates of a poly-diepoxidized polyalkylene polyamine having repeating units of the formula ##STR39## where X is hydrogen or --CH 2 PO(OM) 2 where M is alkali metal, alkaline earth metal, hydrogen, amine-derived ammonium or ammonium and at least 50% of the X units are CH 2 PO(OM) 2 .
Claim 6
Dependent Claim
51 words
The methylene phosphonates of a poly-diepoxidized polyalkylene polyamine having repeating units of the formula ##STR39## where X is hydrogen or --CH 2 PO(OM) 2 where M is alkali metal, alkaline earth metal, hydrogen, amine-derived ammonium or ammonium and at least 50% of the X units are CH 2 PO(OM) 2 .
Claim 7
Dependent Claim
24 words
The methylene phosphonates of poly-diepoxidized polyalkylene polyamines of claim 4 where at least 80% of the X units is --CH 2 PO(OM) 2 .
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) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |