OPTICAL FIBER PRIMARY COATINGS AND FIBERS COATED THEREWITH

Title:

OPTICAL FIBER PRIMARY COATINGS AND FIBERS COATED THEREWITH

Document Type and Number:

WIPO Patent Application WO/1995/000869

Kind Code:

A1

Abstract:

A curable thiol-ene composition specially adapted for use as a primary coating on optical fibers comprises a polythiol and a compound having a plurality of norbornene groups thereon, are characterized in that one of either the compound having the plurality of norbornene groups or the polythiol has a backbone of a poly(tetramethylene oxide), or is an oligomer thereof, and the poly(tetramethylene oxide) has a molecular weight of between 250 and 5,000. The formulations are relatively low viscosity liquids at practical application temperatures and cure substantially completely with very low irradiation fluence. The formulations cure in ambient air. There is no need to exclude oxygen or to control humidity. The formulations of the invention can be cured using low intensity UV lamps which do not generate significant amounts of heat. The cured products have excellent low temperature flexibility, good humidity and water absorbtion resistance and good thermal oxidative stability. The formulations may be applied to optical fibers using conventional techniques and cured with UV-vis or EB irradiation.

More Like This:

WO/1992/016343	POSITIONING, FOCUSING AND MONITORING OF GAS PHASE SELECTIVE BEAM DEPOSITION
WO/2001/002160	METHOD FOR PROVIDING FEATURES ENABLING THERMAL MANAGEMENT IN COMPLEX THREE-DIMENSIONAL STRUCTURES
JP5632699	Stereolithography equipment

Inventors:

WOODS JOHN G
RAKAS MARGARET A
JACOBINE ANTHONY F
ALBERINO LOUIS M
KROPP PHILIP L
SUTKAITIS DONNA M
GLASER DAVID M
NAKOS STEVEN T

Application Number:

PCT/US1994/007061

Publication Date:

January 05, 1995

Filing Date:

June 22, 1994

Export Citation:

Click for automatic bibliography generation Help

Assignee:

LOCTITE CORP (US)

International Classes:

B29C67/00; C03C25/10; C07D263/42; C08F2/50; C08F6/02; C08F8/34; C08F8/42; C08G65/332; C08G73/02; C08G75/04; C09D4/00; G02B6/44; G03F7/00; G03F7/027; (IPC1-7): G02B6/00; G02B6/14; C08F2/50; C08G75/04; B32B17/02; B32B17/04

Foreign References:

US5028661A	1991-07-02
EP0042842A1	1982-01-06
US4125644A	1978-11-14

Other References:

JOURNAL OF APPLIED POLYMER SCIENCE, Vol. 45, 1992, JACOBINE et al., "Photocrosslinked Norbornene-Thiol Copolymers: Synthesis, Mechanical Properties and Cure Studies", pages 471-485.

Download PDF:

View/Download PDF PDF Help

Previous Patent: PRODUCTION METHOD AND APPARATUS FOR PLASTIC OPTICAL FIBER BASE MATERIAL

Next Patent: METHOD FOR POLISHING FIBER OPTIC FERRULES