US4582877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transamidated poly-2-oxazoline compositions useful as wetting agents for polymer and absorbents for polar materials
Assignee: Dow Chemical Co
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Filing: 1984-07-27
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Granted: 1986-04-15
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Expires: 2004-07-27
Abstract
Abstract A polymeric composition comprising a poly-2-oxazoline reacted by transamidation with a carboxylic acid, anhydride, salts of a carboxylic acid or combination thereof which can be blended with another polymeric composition to form a water wettable blend. In another aspect, the poly-2-oxazoline is crosslinked with a polybasic carboxylic acid by transamidation. The crosslinked polymeric composition is useful as an absorbent for polar materials.
Inventors
- 👤 William J. Fairchok
- 👤 Bruce P. Thill
- 👤 Ralph E. Friedrich
- 👤 Mark J. McKinley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:44
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L23/00; C08L23/02; C08L23/10; C08K; C08K5/00; C08K5/04; C08K5/09
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
45 words
A process for preparing a water-wettable polymer by blending a non-wetting polymer with a polymeric composition comprising: (a) a poly-2-oxazoline; and (b) a carboxylic acid, anhydride, salt of a carboxylic acid, or a combination thereof; wherein said (b) has reacted with said poly-2-oxazoline by transamidation.
Claim 2
Dependent Claim
45 words
A process for preparing a water-wettable polymer by blending a non-wetting polymer with a polymeric composition comprising: (a) a poly-2-oxazoline; and (b) a carboxylic acid, anhydride, salt of a carboxylic acid, or a combination thereof; wherein said (b) has reacted with said poly-2-oxazoline by transamidation.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein said poly-2-oxazoline is present as a copolymer.
Claim 4
Dependent Claim
10 words
The process of claim 1 wherein said poly-2-oxazoline is poly-2-ethyloxazoline.
Claim 5
Dependent Claim
11 words
The process of claim 1 wherein said carboxylic acid is polybasic.
Claim 6
Dependent Claim
21 words
The process of claim 4 wherein said polybasic carboxylic acid has reacted by transamidation with said poly-2-oxazoline to crosslink said poly-2-oxazoline.
Claim 7
Dependent Claim
13 words
The process of claim 4 where said polybasic carboxylic acid is ethyleneaminediaminetetraacetic acid.
Claim 8
Dependent Claim
11 words
The process of claim 1 where said non-wetting polymer is polypropylene.
Claim 9
Dependent Claim
10 words
A water-wettable polymer prepared by the process of claim 1.
Claim 10
Dependent Claim
14 words
The water-wettable polymer of claim 8 where said poly-2-oxazoline is present as a copolymer.
Claim 11
Dependent Claim
11 words
The water-wettable polymer of claim 8 where said poly-2-oxazoline is poly-2-ethyloxazoline.
Claim 12
Dependent Claim
12 words
The water-wettable polymer of claim 8 where said carboxylic acid is polybasic.
Claim 13
Dependent Claim
14 words
The water-wettable polymer of claim 1 where said polybasic carboxylic acid is ethyleneaminediaminetetraacetic acid
Claim 14
Dependent Claim
12 words
The water-wettable polymer of claim 8 wherein said non-wetting polymer is polypropylene.
References Cited (Backward Citations)
US3470267A
Cited
US4490494A
Cited
US4186191A
Cited
JPS56136844A
Cited
JPS57108132A
Cited
US4474928A
Cited
US4485220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |