Protective film for articles and method

• US 5,298,587 A
• Filed: 12/21/1992
• Issued: 03/29/1994
• Est. Priority Date: 12/21/1992
• Status: Expired due to Term

• Current Assignee: The Dow Chemical Company (Dow, Inc.)
• Original Assignee: The Dow Chemical Company (Dow, Inc.)
• Inventors: Hu, Ing-Feng, Tou, James C.
• Primary Examiner(s): Marquis, Melvyn I.
• Application Number:
  US07/994,381
• Time in Patent Office: 463 Days
• Field of Search: 528/10, 427/489, 428/447
• US Class Current: 528/10
• CPC Class Codes: C23C 16/30 Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
• CPC Class Codes: C23C 16/401 containing silicon
• CPC Class Codes: C23C 16/45561 Gas plumbing upstream of the reaction chamber
• CPC Class Codes: C23C 16/517 using a combination of discharges covered by two or more of groups C23C16/503 - C23C16/515
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

A method of preparing a coated substrate is disclosed. The substrate is coated with a plasma generated polymer containing Si, O, C and H in specific atom ratio wherein the polymer also contains certain functional groups. A power density of about 10⁶ to about 10⁸ J/Kg is employed in the plasma polymerization process.

Claims

1. A composition which comprises a silicon-carbon polymer of SiO₁.8-2.4 C₀.3-1.0 and H₀.7-4.0 containing at least one of the following ##STR3## functional groups and trapped water.

2. A laminate comprising a substrate material having a surface and adhered to the surface a silicon carbon polymer having a composition comprising SiO₁.8-2.4 C₀.3-1.0 and H₀.7-4.0 containing at least one of the following ##STR4## functional groups and trapped water.

3. The laminate of claim 2 in the form of an optical memory disc, tape or card.

4. The laminate of claim 2 in the form of an optical lens.

5. The laminate of claim 2 wherein the silicon carbon-composition has a thickness ranging from about 2 to about 8 microns.