Light guide comprising a methacrylic or acrylic acid resin core and a fluorocarbon resin clad

• US 5,557,702 A
• Filed: 12/15/1994
• Issued: 09/17/1996
• Est. Priority Date: 12/15/1993
• Status: Expired due to Fees

• Current Assignee: Bridgestone Corporation
• Original Assignee: Bridgestone Corporation
• Inventors: Yoshikawa, Masato, Ishiharada, Minoru, Tanuma, Itsuo, Sugimachi, Masato, Sugiyama, Hideo, Naito, Kazuo
• Primary Examiner(s): NGO, HUNG NHAT
• Application Number:
  US08/356,548
• Time in Patent Office: 642 Days
• Field of Search: 428/36.9, 428/36.91, 385/141, 385/142, 385/143, 385/144, 385/145, 526/242
• US Class Current: 385/143
• CPC Class Codes: C08L 33/04 Homopolymers or copolymers of esters C08L43/04 takes precedence
• CPC Class Codes: G02B 1/046 characterised by the core material
• CPC Class Codes: G02B 1/048 characterised by the cladding material
• CPC Class Codes: G02B 6/02033 Core or cladding made from organic material, e.g. polymeric material G02B1/04 takes precedence
• CPC Class Codes: Y10T 428/139 Open-ended, self-supporting conduit, cylinder, or tube-type article
• CPC Class Codes: Y10T 428/1393 Multilayer [continuous layer]

Abstract

A light guide includes a hollow tubular cladding of a fluorocarbon resin having a methacrylic or acrylic monomer graft polymerized inner surface. The cladding is integrally filled with a core of a methacrylic or acrylic resin which is polymerized to the graft polymerized surface.

Claims

1. A light guide comprising

a hollow tubular cladding of a fluorocarbon resin having a methacrylic or acrylic monomer graft polymerized thereto at an inner surface thereof, and

a core of a methacrylic or acrylic resin polymerized to the graft polymerized surface and integrally filled in said cladding.

2. The light guide of claim 1 wherein said methacrylic or acrylic resin is a copolymer of methacrylic acid or n-butyl methacrylate with another methacrylic or acrylic monomer.

3. The light guide of claim 2 wherein said other methacrylic or acrylic monomer is selected from the group consisting of 2-methoxyethyl acrylate, triethylene glycol acrylate, alkyl methacrylates, and phenoxypolyethylene glycol acrylate.

4. The light guide of claim 1 wherein the fluorocarbon resin comprises a member selected from the group consisting of polytetrafluoroethylene, perfluoroalkyl fluorocarbon resin, tetrafluorinated ethylene hexafluorinated propylene copolymers, ethylene-tetrafluorinatedethylenecopolymers, polychlorotrifluoroethylene, polyvinylidene fluoride, polyvinyl fluoride resin, and mixtures thereof.

5. The light guide of claim 1 wherein the inner surface of said hollow tubular cladding is plasma treated.

6. The light guide of claim 2 wherein the inner surface of said hollow tubular cladding is plasma treated.

7. The light guide of claim 3 wherein the inner surface of said hollow tubular cladding is plasma treated.

8. The light guide of claim 4 wherein the inner surface of said hollow tubular cladding is plasma treated.