D1379 P RADIATION CURABLE PRIMARY COATING ON OPTICAL FIBER
First Claim
1. A radiation curable Primary Coating composition comprising:
- A) an oligomer;
B) a first diluent monomer;
C) a second diluent monomer,D) a photoinitiator;
E) an antioxidant; and
F) an adhesion promoter;
wherein said oligomer is the reaction product of;
i) a hydroxyethyl acrylate;
ii) an aromatic isocyanate;
iii) an aliphatic isocyanate;
iv) a polyol;
v) a catalyst; and
anvi) inhibitor, andwherein said oligomer has a number average molecular weight of from at least about 4000 gμ
mol to less than or equal to about 15,000 g/mol; and
wherein said catalyst is selected from the group consisting of dibutyl tin dilaurate;
metal carboxylates, including, but not limited to;
organobismuth catalysts such as bismuth neodecanoate, CAS 34364-26-6;
zinc neodecanoate, CAS 27253-29-8;
zirconium neodecanoate, CAS 39049-04-2; and
zinc 2-ethylhexanoate, CAS 136-53-8;
sulfonic acids, including but not limited to dodecylbenzene sulfonic acid, CAS 27176-87-0; and
methane sulfonic acid, CAS 75-75-2;
amino or organo-base catalysts, including, but not limited to;
1,2-dimethylimidazole, CAS 1739-84-0; and
diazabicyclo[2.2.2]octane (DABCO), CAS 280-57-9 (strong base), and triphenyl phosphine;
alkoxides of zirconium and titanium, including, but not limited to zirconium butoxide, (tetrabutyl zirconate) CAS 1071-76-7; and
titanium butoxide, (tetrabutyl titanate) CAS 5593-70-4; and
ionic liquid phosphonium, imidazolium, and pyridinium salts, such as, but not limited to, trihexyl(tetradecyl)phosphonium hexafluorophosphate, CAS No. 374683-44-0;
1-butyl-3-methylimidazolium acetate, CAS No. 284049-75-8; and
N-butyl-4-methylpyridinium chloride, CAS No. 125652-55-3; and
tetradecyl(trihexyl) phosphonium; and
wherein a cured film of said radiation curable primary coating composition has a peak tan delta Tg of from about −
25°
C. to about −
45°
C. and a modulus of from about 0.50 MPa to about 1.2 MPa.
1 Assignment
0 Petitions
Accused Products
Abstract
Radiation curable coatings for use as a Primary Coating for optical fibers, optical fibers coated with said coatings and processes to coat the optical fiber are described and claimed. The radiation curable coating is a radiation curable Primary Coating composition comprising: an oligomer; a first diluent monomer; a second diluent monomer, a photoinitiator; an antioxidant; and an adhesion promoter; wherein said oligomer is the reaction product of: a hydroxyethyl acrylate; an aromatic isocyanate; an aliphatic isocyanate; a polyol; a catalyst; and an inhibitor, and wherein said 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; wherein a cured film of said radiation curable primary coating composition has a peak tan delta Tg of from about −25° C. to about −45° C. and a modulus of from about 0.50 MPa to about 1.2 MPa.
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Citations
7 Claims
-
1. A radiation curable Primary Coating composition comprising:
-
A) an oligomer; B) a first diluent monomer; C) a second diluent monomer, D) a photoinitiator; E) an antioxidant; and F) an adhesion promoter; wherein said oligomer is the reaction product of; i) a hydroxyethyl acrylate; ii) an aromatic isocyanate; iii) an aliphatic isocyanate; iv) a polyol; v) a catalyst; and
anvi) inhibitor, and wherein said oligomer has a number average molecular weight of from at least about 4000 gμ
mol to less than or equal to about 15,000 g/mol; andwherein said catalyst is selected from the group consisting of dibutyl tin dilaurate;
metal carboxylates, including, but not limited to;
organobismuth catalysts such as bismuth neodecanoate, CAS 34364-26-6;
zinc neodecanoate, CAS 27253-29-8;
zirconium neodecanoate, CAS 39049-04-2; and
zinc 2-ethylhexanoate, CAS 136-53-8;
sulfonic acids, including but not limited to dodecylbenzene sulfonic acid, CAS 27176-87-0; and
methane sulfonic acid, CAS 75-75-2;
amino or organo-base catalysts, including, but not limited to;
1,2-dimethylimidazole, CAS 1739-84-0; and
diazabicyclo[2.2.2]octane (DABCO), CAS 280-57-9 (strong base), and triphenyl phosphine;
alkoxides of zirconium and titanium, including, but not limited to zirconium butoxide, (tetrabutyl zirconate) CAS 1071-76-7; and
titanium butoxide, (tetrabutyl titanate) CAS 5593-70-4; and
ionic liquid phosphonium, imidazolium, and pyridinium salts, such as, but not limited to, trihexyl(tetradecyl)phosphonium hexafluorophosphate, CAS No. 374683-44-0;
1-butyl-3-methylimidazolium acetate, CAS No. 284049-75-8; and
N-butyl-4-methylpyridinium chloride, CAS No. 125652-55-3; and
tetradecyl(trihexyl) phosphonium; andwherein a cured film of said radiation curable primary coating composition has a peak tan delta Tg of from about −
25°
C. to about −
45°
C. and a modulus of from about 0.50 MPa to about 1.2 MPa. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification