US4794002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified polymeric surfaces and process for preparing same
Assignee: Monsanto Co
•
Filing: 1986-09-05
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Granted: 1988-12-27
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Expires: 2006-09-05
Abstract
Abstract A process for surface modifying a variety of polymeric support surfaces is disclosed in which a predetermined modifying polymer is irreversibly absorbed onto essentially all the surfaces of the support polymer accessible to the modifying polymer. The modifying polymer is selected to impart the desired surface characteristics to the modified polymeric surface.
Inventors
- 👤 Jay M. Henis
- 👤 Mary K. Tripodi
- 👤 Donald I. Stimpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:51
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0081; B01D67/0088; B01D67/0093; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/28033; B01J20/30; B01J20/32; B01J20/3202; B01J20/3206; B01J20/3208; B01J20/321; B01J20/3212; B01J20/3231; B01J20/3242; B01J20/3268; B01J20/3272; B01J20/328; B01J20/3282; B05; B05D; B05D1/00; B05D1/18; B05D1/185; B82; B82Y; B82Y30/00; B82Y40/00; C; C08; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2206; C08J5/2218; C08J5/2231; C08J5/2243; C08J5/2256; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/227; D06M15/244; D06M15/256; D06M15/37; D06M15/63; D06M16/00; D06M23/00; D06M23/005; B01D2323/00; B01D2323/30; C08J2381/00; C08J2381/06; Y; Y10; Y10S; Y10S424/00; Y10S424/07; Y10S530/00; Y10S530/81; Y10S530/812; Y10S530/813; Y10S530/814; Y10S530/815
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
81 words
A process for surface modifying a predetermined polymeric support material which comprises irreversibly adsorbing a modifying polymer onto substantially the entire surface of said support material accessible to said modifying polymer, said modifying polymer having a molecular weight of at least 10,000 and containing an effective number of binding groups which partition onto or into the support material and adhere the modifying polymer to the support material, and subsequently removing excess non-adsorbed modifying polymer by washing the modified polymeric support material.
Claim 2
Dependent Claim
81 words
A process for surface modifying a predetermined polymeric support material which comprises irreversibly adsorbing a modifying polymer onto substantially the entire surface of said support material accessible to said modifying polymer, said modifying polymer having a molecular weight of at least 10,000 and containing an effective number of binding groups which partition onto or into the support material and adhere the modifying polymer to the support material, and subsequently removing excess non-adsorbed modifying polymer by washing the modified polymeric support material.
Claim 3
Dependent Claim
14 words
A process of claim 1 in which the support material is a support membrane.
Claim 4
Dependent Claim
25 words
A process of claim 2 in which the irreversible adsorption is brought about by contacting said support membrane with a solution containing said modifying polymer.
Claim 5
Dependent Claim
19 words
A process of claim 3 in which the solution contains between about 0.1 and 10 wt % modifying polymer.
Claim 6
Dependent Claim
33 words
A process of claim 2 in which partitioning of the binding groups of the modifying polymer onto or into the support membrane is promoted by increasing the chain mobility of the support membrane.
Claim 7
Dependent Claim
19 words
A process of claim 5 in which chain mobility is increased by increase in temperature of the support membrane.
Claim 8
Dependent Claim
17 words
A process of claim 6 in which the temperature is between about 60° C. and 80° C.
Claim 9
Dependent Claim
17 words
A process of claim 2 further comprising crosslinking the modifying polymer following adsorption onto the support membrane.
Claim 10
Dependent Claim
29 words
A process of claim 2 in which the hydrodynamic radius of the modifying polymer is less than or equal to about one-fifth the pore size of the support membrane.
Claim 11
Dependent Claim
28 words
A process of claim 2 in which the support membrane is made of polymer selected from the group consisting of polysulfone, polyethersulfone, polyetherimide, polypropylene, polyethylene and polyvinylidene flouride.
Claim 12
Dependent Claim
20 words
The process of claim 2 in which the support membrane is made of polysulfone and the modifying polymer is hydroxypropylcellulose.
Claim 13
Dependent Claim
12 words
The process of claim 11 in which the modifying polymer is crosslinked.
Claim 14
Dependent Claim
25 words
The process of claim 2 in which the support membrane is made of polysulfone and the modifying polymer is about 88 wt % hydrolyzed polyvinylacetate.
Claim 15
Dependent Claim
12 words
The process of claim 13 in which the modifying polymer is crosslinked.
Claim 16
Dependent Claim
20 words
The process of claim 2 in which the support membrane is made of polyethylene and the modifying polymer is polyvinylalcohol.
Claim 17
Dependent Claim
12 words
The process of claim 15 in which the modifying polymer is crosslinked.
Claim 18
Dependent Claim
20 words
The process of claim 2 in which the support membrane is made of polypropylene and the modifying polymer is polyvinylalcohol.
Claim 19
Dependent Claim
12 words
The process of claim 17 in which the modifying polymer is crosslinked.
Claim 20
Dependent Claim
25 words
A process of claim 2 in which the support membrane is made of polypropylene and the modifying polymer is dextran having hydrophobic reactive groups thereon.
Claim 21
Dependent Claim
12 words
A process of claim 19 in which the modifying polymer is crosslinked.
Claim 22
Dependent Claim
24 words
A process of claim 2 in which the support membrane is made of polysulfone and the modifying is dextran having hydrophobic reactive groups thereon.
Claim 23
Dependent Claim
12 words
A process of claim 21 in which the modifying polymer is crosslinked.
Claim 24
Dependent Claim
24 words
A process of claim 2 in which the modified support membrane is further modified by binding a biologically active material to the modifying polymer.
Claim 25
Dependent Claim
12 words
A process of claim 23 in which the modifying polymer is crosslinked.
Claim 26
Dependent Claim
15 words
A process of claim 23 in which the modifying polymer is a crosslinked ionic polymer.
Claim 27
Dependent Claim
14 words
A process of claim 25 in which the biologically active material is a polypeptide.
Claim 28
Dependent Claim
13 words
A process of claim 25 in which the ionic polymer is DEAE dextran.
Claim 29
Dependent Claim
14 words
A process of claim 27 in which the support membrane is made of polysulfone.
Claim 30
Dependent Claim
12 words
A process of claim 2 in which the modifying polymer is ionic.
Claim 31
Dependent Claim
13 words
A process of claim 2 in which the modifying polymer is DEAE dextran.
Claim 32
Dependent Claim
19 words
A process of claim 2 in which the modifying polymer is DEAE dextran and the support membrane is polysulfone.
Claim 33
Dependent Claim
15 words
The process of claim 31 in which the polysulfone support membrane is substantially macro-void free.
Claim 34
Dependent Claim
19 words
A process of claim 2 in which the modifying polymer is DEAE dextran and the support membrane is polyethersulfone.
Claim 35
Dependent Claim
27 words
A process of claim 2 in which the support membrane is made of a polymer selected from the group consisting of polysulfone, polyethersulfone, polyetherimide, polypropylene and polyethylene.
Claim 36
Dependent Claim
13 words
A process of claim 34 in which the modifying polymer is blue dextran.
Claim 37
Dependent Claim
14 words
A process of claim 2 in which the support polymer is substantially macro-void free.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-27 | 1992-06-27 | 1992-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-27 | 1996-06-27 | 1996-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-27 | 2000-06-27 | 2000-12-27 | $7700.00 | Window Closed / Lapsed |