Optical glass fiber coating composition
US5913004A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 14, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Apr 14, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/672
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is an optical glass fiber coating composition which when coated on an optical glass fiber and suitably cured provides a coating having the combination of properties (i) through (iv): PA1 (i) a stable tensile modulus that is low at room temperature and over a broad range of temperatures below room temperature, PA1 (ii) an adhesion to the optical glass fiber sufficient to prevent structural defects and microbending in the optical glass fiber, PA1 (iii) the capability of being removed by stripping from the optical glass fiber substantially no residue left on the optical glass fiber, and PA1 (iv) which satisfies each of the following inequalities (I) and (II), EQU X.ltoreq.0.2 kg/mm.sup.2 (I) EQU X/Y.gtoreq.1/10 (II) PA1 wherein X is the tensile modulus (kg/mm.sup.2) measured at 23.degree. C. and Y is the tensile modulus (kg/mm.sup.2) measured at -40.degree. C., This coating composition comprises: PA1 (A) a urethane (meth)acrylate formed from, PA2 (a) a diol compound containing at least one structure represented by one of the following formulas (1) and (2), ##STR1## (b) a compound containing two isocyanate groups, and (c) a compound containing a (meth)acrylate group and a hydr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.