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D1363 bt radiation curable primary coatings on optical fiber

A radiation-cured, primary technology, applied in the direction of coating, glass optical fiber, cladding optical fiber, etc., can solve the problem of attenuation of signal transmission ability of coated optical fiber

Inactive Publication Date: 2009-09-16
DSM IP ASSETS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Microbends, if present, can cause attenuation of the signal transmission capability of the coated fiber

Method used

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  • D1363 bt radiation curable primary coatings on optical fiber
  • D1363 bt radiation curable primary coatings on optical fiber
  • D1363 bt radiation curable primary coatings on optical fiber

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0057] Various polyols can be used in the preparation of oligomers. Examples of suitable polyols are polyether polyols, polyester polyols, polycarbonate polyols, polycaprolactone polyols, acrylate polyols, and the like. These polyols may be used alone or in combination of two or more. There is no particular limitation on the polymerization method of the structural units in these polyols: any of random polymerization, block polymerization or graft polymerization is acceptable. Preferably, P2010 (BASF) is used.

[0058] When preparing oligomer A, the polyol component can be added to the oligomer reaction mixture in any suitable amount, and its amount is suitable in the range of about 20 to about 99% by weight based on the weight percentage of the oligomer mixture, more preferably Suitably in the range of about 40 to 97 wt%, preferably in the range of about 65 to about 95 wt%.

[0059] Polyols suitable for use in the preparation of oligomers may have a number average molecular...

Embodiment 1         Embodiment 2

[0166] Example 1 Example 2 Example 3

[0167] Primary Coating Oligomer P

[0168] Acrylate (HEA) 1.41 1.61 1.54

[0169] Aromatic isocyanate (TDI) 1.05 1.20 1.15

[0170] Aliphatic isocyanate (IPDI) 4.71 4.68 5.13

[0171] Polyol (P2010) 42.24 42.40 46.07

[0172] Catalyst (Coscat 83) 0.03 0.03 0.03

[0173] Inhibitor (BHT) 0.08 0.08 0.08

[0174] 49.50 50.00 54.00

[0175] Radiation Curable Coating Compositions

[0176] The first thinner (Photomer4066) 47.00 46.40 41.90

[0177] Second Thinner (SR306) 1.00 0.80 1.00

[0178] Photoinitiator (Chivacure TPO) 1.10 1.40 1.70

[0179] Antioxidant (Irgacure 1035) 0.50 0.50 0.50

[0180] Adhesion promoter (A-189) 0.90 0.90 0.90

[0181] 100.00 100.00 100.00

Embodiment 4

[0182] Example 4 Example 5 Example 6

[0183] Primary Coating Oligomer P

[0184] Acrylate (HEA) 1.84 1.48 1.54

[0185] Aromatic isocyanate (TDI) 1.38 1.11 1.15

[0186] Aliphatic isocyanate (IPDI) 5.28 4.94 5.13

[0187] Polyol (P2010) 47.40 44.38 46.07

[0188] Catalyst (DBTDL) 0.03 0.03 0.03

[0189] Inhibitor (BHT) 0.08 0.08 0.08

[0190] 56.00 52.00 54.00

[0191] curable coating composition

[0192] First Thinner (Photomer 4066) 40.90 44.50 41.90

[0193] Second Thinner (SR306) 0.95 1.00 1.00

[0194] Photoinitiator (Chivacure TPO) 1.70 1.40 1.70

[0195] Photoinitiator (Irgancure 819) ----- 1.10 ----

[0196] Antioxidant (Irgacure 1035) 0.50 0.50 0.50

[0197] Adhesion promoter (A-139 0.90 0.90 0.90

[0198] 100.00 100.00 100.00

[0199] The above-mentioned primary coating is referred to as a P primary coating.

[0200] Radiation Curable Coating CA / CR

[0201] The amount...

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Abstract

The present invention relates to a radiation curable coatings for use as a Primary Coating for optical fibers, optical fibers coated with said coatings and methods for the preparation of coated optical fibers. The radiation curable coating comprises at least one (meth)acrylate functional oligomer and a photoinitiator, wherein the urethane-(meth)acrylate oligomer CA / CR comprises (meth)acrylate groups, at least one polyol backbone and urethane groups, wherein about 15% or more of the urethane groups are derived from one or both of 2,4- and 2,6-toluene diisocyanate, wherein at least 15% of the urethane groups are derived from a cyclic or branched aliphatic isocyanate, and wherein said (meth)acrylate functional oligomer has a number average molecular weight of from at least about 4000 g / mol to less than or equal to about 15,000 g / mol; and wherein a cured film of the radiation curable Primary Coating composition has a modulus of less than or equal to about 1.2 MPa.

Description

[0001] Cross References to Related Applications [0002] This patent application claims co-pending U.S. Provisional Patent Application 60 / 874,719, "CR Radiation Curable Primary Coating for Optical Fiber," filed December 14, 2006, co-pending U.S. Provisional Patent Application 60 / 874,722, "PRadiation Curable Primary Coating for Optical Fiber," filed December 4, 2006 Co-pending U.S. Provisional Patent Application 60 / 874,721, "CA Radiation Curable Primary Coating for Optical Fiber," filed 2006 Co-pending U.S. Provisional Patent Application 60 / 874,730, "Supercoatings for Optical Fiber," filed December 14, 2007, and co-pending U.S. Provisional Patent Application 60 / 974,631, "PRradiation Curable Primary Coating on Optical Fiber", the above-mentioned patent application is hereby incorporated by reference in its entirety. technical field [0003] The present invention generally relates to a radiation curable coating for use as a primary coating for an optical fiber, an optical fiber...

Claims

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Application Information

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IPC IPC(8): C03C25/10C03C25/26C09D11/00C09D175/14C09D175/16
CPCC08G18/755C09D175/16C08G18/724C08G18/672C08G18/7621C03C25/106Y10T428/2964C03C25/10C03C25/24C08G18/67C03C25/1065G02B6/02395
Inventor 鲍路斯·安东尼厄·玛丽亚·斯特曼吴小松史蒂文·R·施密德爱德华·J·墨菲约翰·M·齐默曼安东尼·约瑟夫·托尔托雷洛
Owner DSM IP ASSETS BV
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