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Radiation Curable Coating Composition

a technology of radiation curable compositions and coatings, applied in the direction of instruments, natural mineral layered products, synthetic resin layered products, etc., can solve the problem that polyols in general are susceptible to hydrolysis

Inactive Publication Date: 2008-05-15
DSM IP ASSETS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The composition achieves a secant modulus greater than 600 MPa, elongation at break of at least 10%, and a glass transition temperature greater than 45°C, maintaining mechanical integrity and hydrolytic stability even after aging, thus addressing the limitations of existing coatings.

Problems solved by technology

Polyester polyols in general are susceptible to hydrolysis.
One challenge of using such polyester polyols, is developing compositions whose combination of other physical and chemical properties will result in suitable optical fiber coatings while maintaining the desirable resistance to hydrolysis and hydrophobicity.

Method used

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  • Radiation Curable Coating Composition
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Examples

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examples

[0062]The following examples are given as particular embodiments of the invention and to demonstrate the practice and advantages thereof. It is to be understood that the examples are given by way of illustration and are not intended to limit the specification or the claims that follow in any manner.

[0063]The following component names and definitions are used in the Examples and are understood to refer to the compounds or compositions noted:[0064]TDI 80 is toluene diisocyanate from Bayer[0065]IPDI is isophorone diisocyanate from Lyondell[0066]HEA is hydroxyethylacrylate from Rohm & Hass[0067]PEA SR-339A is phenoxyethyl acrylate from Sartomer[0068]HDDA SR-238 is 1,6 hexanediol diacrylate from Sartomer[0069]EONPA SR-504D is ethoxylated nonyl phenol acrylate from Sartomer[0070]IBOA SR-506 is isobornyl acrylate from Sartomer[0071]SR-531 is cyclic trimethylolpropane formal acrylate from Sartomer[0072]SR-306 TPGDA is tripropylene glycol diacrylate from Sartomer[0073]SR-351, TMPTA is trimet...

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Abstract

The invention relates to a radiation curable composition including a polyester urethane (meth)acrylate oligomer prepared from ortho-carboxylic polyester polyols, where the composition, after cure, has a secant modulus greater than about 600 MPa and an elongation at break of at least about 10%. The invention also relates to coated optical fibers and optical fiber ribbon including at least one coating derived from this composition, and to a process of making these coated optical fibers.

Description

FIELD OF THE INVENTION[0001]The invention relates to coated optical fibers and radiation curable compositions which are suitable for use as a coating layer or coating layers in optical fiber technology, such as secondary coating, ribbon matrix material, bundling material, upjacketing or tight-buffer coating, each of which can be colored or not, or ink coating for optical fibers.DESCRIPTION OF RELATED ART[0002]Glass optical fibers are provided with protective coatings immediately after spinning the molten glass. Generally, two coatings are applied, a primary coating of a relatively soft, flexible resin directly on the glass surface, and a harder resin, a secondary coating, on the primary coating. However, it is also possible to use a single coating instead of a primary and a secondary coating. The individual fibers generally are combined in larger structures such as cables. Cables may comprise individual fibers, or fiber ribbon structures. The optical fiber ribbon generally is made f...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B27/40C08G18/00
CPCC08G18/4213Y10T428/29C08G18/8175C09D175/16G02B1/048C08G18/4238Y10T428/2938C08G18/42C08L33/08C08L33/10C08L75/04Y10T428/31551C08G18/28C08J3/28
Inventor ZAHORA, EDWARD PAULTORTORELLO, ANTHONY JOSEPHMURPHY, EDWARD JOSEPHTOUSSAINT, ANTHONY FITZROYREICHERT, TIMOTHY PAULHAWKINSON, KELLY AN
Owner DSM IP ASSETS BV
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