US4134916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-polyalkoxyalkyl acrylamides or methacrylamides
Assignee: Huntsman Corp
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Filing: 1978-02-06
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Granted: 1979-01-16
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Expires: 1998-02-06
Abstract
Abstract Covers a new composition of matter comprising an acrylamide or methacrylamide monomer characterized by the following structural formula: ##STR1## where R 1 is hydrogen or methyl, R 2 and R 3 are hydrogen or lower alkyl, R 4 is a primary or secondary alkyl group or an alkaryl group, each group containing 6-25 carbon atoms, and n is an integer ranging from 2 to 30.
Inventors
- 👤 Philip H. Moss
- 👤 Edward C. Y. Nieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:56
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609; C08G65/32; C08G65/329; C08G65/331; C08G65/332; C08G65/3322
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
58 words
An acrylamide or methacrylamide monomer characterized by the following structural formula: ##STR5## where R 1 is hydrogen or methyl, R 2 and R 3 are hydrogen or lower alkyl, R 4 is a primary or secondary alkyl group or an alkaryl group, each group containing 6-25 carbon atoms, and n is an integer ranging from 2 to 30.
Claim 2
Dependent Claim
58 words
An acrylamide or methacrylamide monomer characterized by the following structural formula: ##STR5## where R 1 is hydrogen or methyl, R 2 and R 3 are hydrogen or lower alkyl, R 4 is a primary or secondary alkyl group or an alkaryl group, each group containing 6-25 carbon atoms, and n is an integer ranging from 2 to 30.
Claim 3
Dependent Claim
14 words
The monomer of claim 1 where R 4 is C 6 -C 18 .
Claim 4
Dependent Claim
14 words
The monomer of claim 2 where R 4 is C 8 -C 14 .
Claim 5
Dependent Claim
9 words
The monomer of claim 1 where n is 2-13.
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) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |