Patent US3864379A successfully refreshed from Google Patents.
US3864379A
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Addition polymers with polyethylenimine terminal groups
Assignee: EIDP Inc
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Filing: 1972-04-05
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Granted: 1975-02-04
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Expires: 1992-04-05
Abstract
Abstract Polymers represented by the general structure WHERE R1 R2 and R4 can be hydrogen, alkyl radicals of one through four carbon atoms, -CH2CH2NH2 radicals, or -CH2CH2OH radicals; R3 and X can be hydrogen or alkyl radicals of one through four carbon atoms; Zb can be an organic linking radical; Y can be hydrogen, an alkyl radical of one through four carbon atoms, an alkenyl radical of two through six carbon atoms, -CN, halogen, phenyl, -OR, where R is an alkyl radical of one through 18 carbon atoms; D is an end group such as hydrogen, alkyl or alkenyl; A IS A NUMBER 1 THROUGH 2000; B IS 0 OR 1; AND C IS A NUMBER 5 THROUGH 5000; THE C/A QUOTIENT BEING GREATER THAN 1.
Inventors
- 👤 Darrell R Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:17
CPC Classifications
C; C07; C07C; C07C255/00; C08; C08G; C08G81/00; C08G81/02; C08G81/024; C09; C09D; C09D7/00; C09D7/40; C09D7/45; C09K; C09K23/00; C09K23/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
6 words
A POLYMERIC MATERIAL OF THE FORMULA
Claim 2
Dependent Claim
6 words
A POLYMERIC MATERIAL OF THE FORMULA
Claim 3
Dependent Claim
22 words
The polymeric material of claim 1 wherein a is a number 3 through 100, and c is a number 20 through 500.
Claim 4
Dependent Claim
9 words
The polymeric material of claim 2 having the formula
Claim 5
Dependent Claim
9 words
The polymeric material of claim 2 having the formula
Claim 6
Dependent Claim
9 words
The polymeric material of claim 2 having the formula
Claim 7
Dependent Claim
9 words
The polymeric material of claim 2 having the formula
Claim 8
Dependent Claim
9 words
The polymeric material of claim 2 having the formula
Claim 9
Dependent Claim
9 words
The polymeric material of claim 2 having the formula
Claim 10
Dependent Claim
9 words
The polymeric material of claim 2 having the formula
References Cited (Backward Citations)
US3465036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |