US5219928A
Expired / Lapsed
US
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Transparent liquid absorbent materials
Assignee: 3M Co
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Filing: 1990-10-24
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Granted: 1993-06-15
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Expires: 2010-10-24
Abstract
Abstract A liquid-absorbent composition comprising (a) a polymeric matrix component comprising crosslinked silanol moieties, and (b) a liquid-absorbent component comprising a water-absorbent polymer, preferably a water-soluble polymer. This composition is capable of forming liquid-absorbent, semi-interpenetrating polymeric networks, which are capable of absorbing significant quantities of those liquids that are solvents for the uncrosslinked portion of the network without loss of physical integrity and without leaching or other forms of phase separation. The compositions of this invention provides polymeric matrices which result in transparent coatings capable of providing improved combinations of ink absorption and durability, while at the same time retaining transparency and being amenable to the types of processing commonly used in producing transparent graphical materials.
Inventors
- 👤 John J. Stofko, Jr.
- 👤 Mohammad Iqbal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:31
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/529; Y; Y10; Y10S; Y10S525/00; Y10S525/903; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
38 words
A liquid-absorbent composition consisting essentially of: (a) a polymeric matrix component comprising crosslinked silanol moieties, said silanol moieties being in pendant groups of said matrix component, and (b) an uncrosslinked liquid-absorbent component comprising at least one water-absorbent polymer.
Claim 2
Dependent Claim
38 words
A liquid-absorbent composition consisting essentially of: (a) a polymeric matrix component comprising crosslinked silanol moieties, said silanol moieties being in pendant groups of said matrix component, and (b) an uncrosslinked liquid-absorbent component comprising at least one water-absorbent polymer.
Claim 3
Dependent Claim
31 words
A liquid-absorbent composition comprising: (a) a polymeric matrix component comprising crosslinked silanol moieties, and (b) an uncrosslinked liquid-absorbent component comprising at least one water-absorbent polymer, wherein said water-absorbent polymer is water-soluble.
Claim 4
Dependent Claim
31 words
A liquid-absorbent composition comprising: (a) a polymeric matrix component comprising crosslinked silanol moieties, and (b) an uncrosslinked liquid-absorbent component comprising at least one water-absorbent polymer, wherein said water-absorbent polymer is water-soluble.
Claim 5
Dependent Claim
14 words
The composition of claim 2, wherein amide groups are present in said water-soluble polymer.
Claim 6
Dependent Claim
13 words
The composition of claim 2, wherein said water-soluble polymer contains vinyl lactam groups.
Claim 7
Dependent Claim
12 words
The composition of claim 4, wherein said vinyl lactam is polyvinyl pyrrolidone.
Claim 8
Dependent Claim
12 words
The composition of claim 2, wherein said water-soluble polymer is polyvinyl alcohol.
Claim 9
Dependent Claim
142 words
A liquid-absorbent composition comprising; (a) a polymeric matrix component comprising crosslinked silanol moieties, said silanol moieties being in pendant groups of said matrix component, wherein said matrix component is formed from at least one polymer having the structure: ##STR5## wherein Z represents a monomeric unit selected from the group consisting of acrylonitrile, allyl acetate, methyl acrylate, methyl methacrylate, methyl and higher alkyl vinyl ethers, stilbene, isostilbene, styrene, vinyl acetate, vinyl chloride, vinyl ethers have up to 18 carbon atoms, vinylpyrrolidone, divinylether, norbornene, chloroethylvinyl ether, and vinylidene chloride; R 1 represents a divalent alkyl group; R 2 , R 3 , and R 4 independently represent alkoxy groups having up to 5 carbon atoms; and R 5 represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, and (b) an uncrosslinked liquid-absorbent component comprising at least one water-absorbent polymer.
Claim 10
Dependent Claim
142 words
A liquid-absorbent composition comprising; (a) a polymeric matrix component comprising crosslinked silanol moieties, said silanol moieties being in pendant groups of said matrix component, wherein said matrix component is formed from at least one polymer having the structure: ##STR5## wherein Z represents a monomeric unit selected from the group consisting of acrylonitrile, allyl acetate, methyl acrylate, methyl methacrylate, methyl and higher alkyl vinyl ethers, stilbene, isostilbene, styrene, vinyl acetate, vinyl chloride, vinyl ethers have up to 18 carbon atoms, vinylpyrrolidone, divinylether, norbornene, chloroethylvinyl ether, and vinylidene chloride; R 1 represents a divalent alkyl group; R 2 , R 3 , and R 4 independently represent alkoxy groups having up to 5 carbon atoms; and R 5 represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, and (b) an uncrosslinked liquid-absorbent component comprising at least one water-absorbent polymer.
Claim 11
Dependent Claim
11 words
The composition of claim 7, wherein ##STR6## represents a propyltriethoxysilane group.
Claim 12
Dependent Claim
12 words
The composition of claim 7, wherein R 5 represents a methoxyethyl group.
Claim 13
Dependent Claim
12 words
The composition of claim 7, wherein R 5 represents a methoxypropyl group.
Claim 14
Dependent Claim
12 words
The composition of claim 7, wherein R 5 represents an ethoxyethyl group.
Claim 15
Dependent Claim
13 words
The composition of claim 7, wherein R 5 represents a 6-caproic acid group.
Claim 16
Dependent Claim
12 words
The composition of claim 7, wherein R 5 represents a polyoxyalkylene group.
Claim 17
Dependent Claim
12 words
The composition of claim 7, wherein R 5 represents an isopropoxypropyl group.
Claim 18
Dependent Claim
18 words
The composition of claim 1, wherein said crosslinked polymer comprises at least 20% by weight of the composition.
Claim 19
Dependent Claim
65 words
A liquid-absorbent composition consisting essentially of: (a) a polymeric matrix component comprising crosslinked silanol moieties, said silanol moieties being in pendant groups of said matrix component, said polymeric matrix component having the structure ##STR7## wherein the symbol ##STR8## represents a polymeric backbone containing a plurality of unsubstituted or substituted --CH 2 -- groups, and (b) an uncrosslinked liquid-absorbent component comprising at lest one water-absorbent polymer.
Claim 20
Dependent Claim
65 words
A liquid-absorbent composition consisting essentially of: (a) a polymeric matrix component comprising crosslinked silanol moieties, said silanol moieties being in pendant groups of said matrix component, said polymeric matrix component having the structure ##STR7## wherein the symbol ##STR8## represents a polymeric backbone containing a plurality of unsubstituted or substituted --CH 2 -- groups, and (b) an uncrosslinked liquid-absorbent component comprising at lest one water-absorbent polymer.
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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) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |