Patent US4473676A successfully refreshed from Google Patents.
US4473676A
Expired / Lapsed
US
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Polymer compositions having a low coefficient of friction
Assignee: Eastman Kodak Co
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Filing: 1983-06-13
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Granted: 1984-09-25
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Expires: 2003-06-13
Abstract
Abstract Polymer compositions which have a low coefficient of friction are disclosed. The polymer compositions comprise a blend of at least 80 percent by weight of a solid or film-forming polymer and at least 0.35 percent by weight of a crosslinked silicone polycarbinol. The described composition retains its low coefficient of friction even after being exposed to hydrocarbon solvents during a cleaning process. The described compositions are particularly useful in forming protective layers for elements, particularly photographic elements.
Inventors
- 👤 David J. Steklenski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:54
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7614; G03C11/00; G03C11/08; Y; Y10; Y10S; Y10S430/00; Y10S430/162; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
27 words
A composition comprising a blend of at least 80 percent by weight of a polymer and at least 0.35 percent by weight of a crosslinked silicone polycarbinol.
Claim 2
Dependent Claim
27 words
A composition comprising a blend of at least 80 percent by weight of a polymer and at least 0.35 percent by weight of a crosslinked silicone polycarbinol.
Claim 3
Dependent Claim
65 words
The composition of claim 1 wherein said polymer is a compatible polymer blend comprising: (a) cellulose nitrate; and (b) a hydrophobic acrylate polymer, wherein said polymer blend has a sufficient amount of the acrylate polymer so as to have a glass transition temperature of at least about 50° C. and a sufficient amount of cellulose nitrate so as to be resistant to chlorinated hydrocarbon solvents.
Claim 4
Dependent Claim
123 words
A composition comprising a blend of a major amount of a polymer or polymer blend and a minor amount of a crosslinked member of the group consisting of a hydroxy-terminated polysiloxane of the general structure: ##STR3## wherein each of R 1 and R 2 is independently selected from hydrogen, alkyl and aryl and w is a interger from about 100 to about 2500 and a graft hydroxy functionalized polysiloxane having the general structure: ##STR4## wherein R 1 , R 2 , R 3 , R 4 and R 5 are each independently selected from hydrogen, alkyl and aryl and R 6 is a divalent linking group and x and y are each independently selected from an integer from about 2 to about 15.
Claim 5
Dependent Claim
123 words
A composition comprising a blend of a major amount of a polymer or polymer blend and a minor amount of a crosslinked member of the group consisting of a hydroxy-terminated polysiloxane of the general structure: ##STR3## wherein each of R 1 and R 2 is independently selected from hydrogen, alkyl and aryl and w is a interger from about 100 to about 2500 and a graft hydroxy functionalized polysiloxane having the general structure: ##STR4## wherein R 1 , R 2 , R 3 , R 4 and R 5 are each independently selected from hydrogen, alkyl and aryl and R 6 is a divalent linking group and x and y are each independently selected from an integer from about 2 to about 15.
Claim 6
Dependent Claim
29 words
A composition comprising a solvent, a polymer, a silicone polycarbinol, a multifunctional crosslinking reagent and a catalyst to catalyze the crosslinking of the silicone polycarbinol by the crosslinking reagent.
Claim 7
Dependent Claim
29 words
A composition comprising a solvent, a polymer, a silicone polycarbinol, a multifunctional crosslinking reagent and a catalyst to catalyze the crosslinking of the silicone polycarbinol by the crosslinking reagent.
Claim 8
Dependent Claim
31 words
An element comprising a support having thereon a layer comprising a blend of a major amount of a polymer or polymer blend and a minor amount of a crosslinked silicone polycarbinol.
Claim 9
Dependent Claim
31 words
An element comprising a support having thereon a layer comprising a blend of a major amount of a polymer or polymer blend and a minor amount of a crosslinked silicone polycarbinol.
Claim 10
Dependent Claim
64 words
The element of claim 5 wherein said polymer is a compatible polymer blend comprising: (a) cellulose nitrate; and (b) a hydrophobic acrylate polymer, wherein said polymer blend has sufficient amount of the acrylate polymer so as to have a glass transition temperature of at least about 50° C. and a sufficient amount of cellulose nitrate so as to be resistant to chlorinated hydrocarbon solvents.
Claim 11
Dependent Claim
130 words
The element comprising a support having thereon a layer comprising a blend of a major amount of a polymer or polymer blend and a minor amount of crosslinked member of the group consisting of a hydroxy-terminated polysiloxane of the general structure: ##STR5## wherein each of R 1 and R 2 is independently selected from hydrogen, alkyl and aryl and w is an integer from about 100 to about 2500 and a graft hydroxy functionalized polysiloxane having the general structure: ##STR6## wherein R 1 , R 2 , R 3 , R 4 , and R 5 are each independently selected from hydrogen, alkyl and aryl and R 6 is a divalent linking group and x and y are each independently selected from an integer from about 2 to about 15.
Claim 12
Dependent Claim
130 words
The element comprising a support having thereon a layer comprising a blend of a major amount of a polymer or polymer blend and a minor amount of crosslinked member of the group consisting of a hydroxy-terminated polysiloxane of the general structure: ##STR5## wherein each of R 1 and R 2 is independently selected from hydrogen, alkyl and aryl and w is an integer from about 100 to about 2500 and a graft hydroxy functionalized polysiloxane having the general structure: ##STR6## wherein R 1 , R 2 , R 3 , R 4 , and R 5 are each independently selected from hydrogen, alkyl and aryl and R 6 is a divalent linking group and x and y are each independently selected from an integer from about 2 to about 15.
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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) | 1987-09-25 | 1988-03-26 | 1988-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-25 | 1992-03-26 | 1992-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-25 | 1996-03-26 | 1996-09-25 | $7700.00 | Window Closed / Lapsed |