US5093154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing a monomolecular built-up film
Assignee: Japan Atomic Energy Agency
•
Filing: 1989-09-05
•
Granted: 1992-03-03
•
Expires: 2009-09-05
Abstract
Abstract A process for producing a monomolecular built-up film of monomolecular layers of a silane surfactant is described. In the process, the silane surfactant is chemically adsorbed on a hydrophilic surface of a substrate and is subjected to irradiation of a high energy beam or plasma treatment in an active gas atmosphere to activate the monomolecular layer. This activated layer is further adsorbed with the silane surfactant to form a built-up film. The beam irradiation or plasma treatment may be effected in a desired pattern. The beam irradiation or plasma treatment and the further adsorption are repeated until the desired number of the monomolecular layers is obtained.
Inventors
- 👤 Motoyoshi Hatada
- 👤 Kazufumi Ogawa
- 👤 Hideharu Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:07
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C09; C09D; C09D4/00; B05; B05D; B05D1/00; B05D1/18; B05D1/185; B82Y40/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
A process for manufacturing a built-up film of monomolecular layers which comprises: (a) providing a substrate having a hydrophilic surface layer which can be subjected to an adsorption reaction with a silane surfactant; (b) subjecting the silane surfactant to chemical adsorption on the surface layer in a non-aqueous solvent thereby forming a first monomolecular layer on the surface layer; (c) subjecting the first monomolecular layer to irradiation of a high energy beam or to plasma treatment in an atmosphere of a reactive gas selected from the group consisting of air, O 2 , N 2 and ammonia for modifying a group of the silane surfactant into a group reactive with the silane surfactant; and (d) subjecting the silane surfactant to reaction with the first monomolecular layer at the reactive group thereby forming a second monomolecular layer through bonding with the first monomolecular layer.
Claim 2
Dependent Claim
143 words
A process for manufacturing a built-up film of monomolecular layers which comprises: (a) providing a substrate having a hydrophilic surface layer which can be subjected to an adsorption reaction with a silane surfactant; (b) subjecting the silane surfactant to chemical adsorption on the surface layer in a non-aqueous solvent thereby forming a first monomolecular layer on the surface layer; (c) subjecting the first monomolecular layer to irradiation of a high energy beam or to plasma treatment in an atmosphere of a reactive gas selected from the group consisting of air, O 2 , N 2 and ammonia for modifying a group of the silane surfactant into a group reactive with the silane surfactant; and (d) subjecting the silane surfactant to reaction with the first monomolecular layer at the reactive group thereby forming a second monomolecular layer through bonding with the first monomolecular layer.
Claim 3
Dependent Claim
26 words
A process according to claim 1, wherein the steps of (c) and (d) are repeated until the desired number of the monomolecular layers are built up.
Claim 4
Dependent Claim
28 words
A process according to claim 1, wherein the first monomolecular layer is subjected to irradiation of the high energy beam or plasma treatment selectively in a desired pattern.
Claim 5
Dependent Claim
22 words
A process according to claim 1, wherein the gas is nitrogen whereby an NH 2 group is formed as the reactive group.
Claim 6
Dependent Claim
21 words
A process according to claim 1, wherein the gas is oxygen whereby an OH group is formed as the reactive group.
Claim 7
Dependent Claim
30 words
A process according to claim 1, wherein said silane surfactant is a compound of the formula, CH 2 CH--(CH 2 ) n --SiCl 3 , wherein n is an integer.
Claim 8
Dependent Claim
16 words
A process according to claim 6, wherein n is an integer of from 10 to 20.
Claim 9
Dependent Claim
28 words
A process according to claim 1, wherein said silane surfactant is a compound of the formula, HC.tbd.C--(CH 2 ) n --SiCl 3 , wherein n is an integer.
Claim 10
Dependent Claim
16 words
A process according to claim 8, wherein n is an integer of from 10 to 20.
Claim 11
Dependent Claim
36 words
A process according to claim 1, wherein said silane surfactant is a compound of the formula, CH 2 ═CH--(CH 2 ) n --C.tbd.C--C.tbd.C--(CH 2 ) m --SiCl 3 wherein n and m are, respectively, an integer.
References Cited (Backward Citations)
US4539061A
Cited
JPS61122925A
Cited
US4761316A
Cited
US4778724A
Cited
US4968524A
Cited
US4992300A
Cited
US5008127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-03 | 1995-09-02 | 1996-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-03 | 1999-09-02 | 2000-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-03 | 2003-09-02 | 2004-03-03 | $7700.00 | Window Closed / Lapsed |