Method for providing mirror surfaces with protective strippable polymeric film

Patent · Tue Apr 22 00:00:00 EST 1980

OSTI ID:6821618

Edwards, C C; Day, J R

This invention is a method for forming a protective, strippable, elastomeric film on a highly reflective surface. The method is especially well suited for protecting diamond-machined metallic mirrors, which are susceptible not only to abrasion and mechanical damage but also to contamination and corrosion by various fluids. In a typical use of the invention, a diamond-machined copper mirror surface is coated uniformly with a solution comprising a completely polymerized and completely cured thermoplastic urethane elastomer dissolved in tetrahydrofuran. The applied coating is evaporated to dryness, forming a tough, adherent, impermeable, and transparent film which encapsulates dust and other particulates on the surface. The film may be left in place for many months. When desired, the film may be stripped intact, removing the entrapped particulates and leaving no residue on the mirror surface.

• Assignee: Dept. of Energy
• Patent Number(s): US 4199620
• OSTI ID: 6821618
• Resource Relation: Patent File Date: Filed date 27 Mar 1979; Other Information: PAT-APPL-24,340
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
LASER MIRRORS
FABRICATION
SURFACE COATING
ABRASION
CONTAMINATION
CORROSION PROTECTION
FILMS
FURANS
METALS
POLYMERS
REFLECTIVITY
REMOVAL
SAFETY
SURFACE PROPERTIES
SURFACES
URETHANE
CARBAMATES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
DEPOSITION
ELEMENTS
HETEROCYCLIC COMPOUNDS
MIRRORS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
420300* - Engineering- Lasers- (-1989)