Claims
- 1. A radiation-curable, outer primary coating composition comprising, relative to the total weight of the composition:(A) about 20 to about 80% by weight of a first radiation-curable oligomer, wherein said first radiation-curable oligomer comprises a (meth)acrylate group and has a backbone that is based on a polyether, polyolefin, polyester, polycarbonate, or copolymers thereof; (B) about 10 to about 80% by weight of a second radiation-curable oligomer, wherein said second radiation-curable oligomer is an alkoxylated bisphenol A di(meth)acrylate and is different from said first radiation-curable oligomer; and (C) an alkoxylated alkyl phenol (meth)acrylate diluent; wherein said composition, after cure, has a room temperature tensile modulus of at least 50 MPa.
- 2. The composition of claim 1, wherein the composition comprises, relative to the total weight of the composition:about 20 to about 40% by weight of said first radiation-curable oligomer; about 40 to about 80% by weight of said alkoxylated bisphenol A di(meth)acrylate; about 5 to about 20% by weight of a reactive diluent having an acrylate or vinyl ether functionality; about 1 to about 20% by weight of a photoinitiator; and from 0 to about 10% by weight of a pigment.
- 3. The composition of claim 2, wherein said first oligomer is a polyether oligomer.
- 4. The composition of claim 2, wherein said reactive diluent includes ethoxylated nonyl phenol acrylate.
- 5. The composition of claim 1, further comprising, relative to the total weight of the composition, about 1 to about 10% by weight pigment.
- 6. The composition of claim 1, wherein said first oligomer is a polyether oligomer.
- 7. The composition of claim 1, wherein said first oligomer is a polyester oligomer.
- 8. The composition of claim 1, wherein said first oligomer is a polycarbonate oligomer.
- 9. The composition of claim 1, wherein said alkoxylated bisphenol A di(meth)acrylate is ethoxylated bisphenol A diacrylate.
- 10. The composition of claim 1, wherein said composition comprises ethoxylated nonyl phenol acrylate.
- 11. The composition of claim 1, wherein said composition, after cure, has a peak water absorption of no more than 1.5%.
- 12. The composition of claim 1, wherein said composition, after cure, has an elongation at break of at least about 5%.
- 13. The composition of claim 1, wherein said composition, after cure, has a glass transition temperature, tan delta max., of at least about 40° C.
- 14. The composition of claim 1, wherein said composition, after cure, exhibits good color permanence.
- 15. The composition of claim 1, wherein said composition, after cure, exhibits minimal water soak extraction and resistance to attack from hydrocarbon gel cable filling material.
- 16. The composition of claim 1, wherein said first radiation-curable oligomer has a molecular weight of at least about 700 and at most about 10,000 Daltons.
- 17. A radiation curable, outer primary coating composition comprising, relative to the total weight of the composition:(A) about 10% to about 80% by weight of a first radiation-curable oligomer, wherein said first radiation-curable oligomer comprises an acrylate group and has a backbone that is based on a polyether, polyolefin, polyester, polycarbonate, or copolymers thereof; (B) about 10% to about 80% by weight of a second radiation-curable oligomer, wherein said oligomer is an alkoxylated bisphenol A diacrylate and is different from said first radiation-curable oligomer; (C) about 1% to 20% of reactive diluent having two groups capable of polymerization using actinic radiation; and (D) an alkoxylated alkyl phenol (meth)acrylate diluent; wherein said composition, after cure, has a room temperature tensile modulus of a least 50 MPa.
Parent Case Info
This is a Continuation of U.S. application Ser. No. 08/891,450 filed Jul. 10, 1997, now U.S. Pat. No. 6,080,483 which is a divisional application of Ser. No. 08/615,857 which was filed on Mar. 12, 1996, now U.S. Pat. No. 5,837,750 which is a continuation-in-part of Ser. No. 08/403,521, which was filed Mar. 13, 1995, now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (1)
Number |
Date |
Country |
9013579 |
Nov 1990 |
WO |
Continuations (1)
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Number |
Date |
Country |
Parent |
08/891450 |
Jul 1997 |
US |
Child |
09/479873 |
|
US |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
08/403521 |
Mar 1995 |
US |
Child |
08/615857 |
|
US |