Patent US2141389A successfully refreshed from Google Patents.
Patent US1114645A successfully refreshed from Google Patents.
US4138542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers which contain 2-(4-methyl-cyclohex-3-en-1-yl)-propyl-N-acrylamide or -N-methacrylamide groups
Assignee: BASF SE
•
Filing: 1978-04-28
•
Granted: 1979-02-06
•
Expires: 1998-04-28
Abstract
Abstract Polymers in which the side branches contain optically active 2-(4-methyl-cyclohex-3-en-1-yl)-propyl groups, and their preparation. The new polymers are used for the production of moldings, coatings and adhesives, and for finishing paper or textiles. They have K values of from 20 to 140.
Inventors
- 👤 Hardo Siegel
- 👤 Herbert Naarmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:05
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
30 words
A polymer which has a K value of from 20 to 140 and which comprises structural units of the general formula ##STR6## where R is H or CH 3 .
Claim 2
Dependent Claim
30 words
A polymer which has a K value of from 20 to 140 and which comprises structural units of the general formula ##STR6## where R is H or CH 3 .
Claim 3
Dependent Claim
68 words
A process for the preparation of a polymer which contains 2-(4-methyl-cyclohex-3-en-1-yl)-propyl groups and has a K value of from 20 to 140, wherein an olefinically unsaturated acrylic or methacrylic compound of the general formula ##STR7## where R is H or CH 3 is polymerized, with or without one or more other olefinically unsaturated monomers, in the presence of a free radical initiator at from 0° to 100° C.
Claim 4
Dependent Claim
68 words
A process for the preparation of a polymer which contains 2-(4-methyl-cyclohex-3-en-1-yl)-propyl groups and has a K value of from 20 to 140, wherein an olefinically unsaturated acrylic or methacrylic compound of the general formula ##STR7## where R is H or CH 3 is polymerized, with or without one or more other olefinically unsaturated monomers, in the presence of a free radical initiator at from 0° to 100° C.
References Cited (Backward Citations)
US2790789A
Cited
US3551373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |