 Coolant/lubricant for machine operations |
| In accordance with the present invention, a non-toxic coolant lubricant is provided which is ... |
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| Aqueous primer or coating |
| OF THE PREFERRED EMBODIMENTS Unless otherwise indicated, description of components in chemical ... |
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| Polyetherimide-polycarbonate blends |
| We claim: 1. A composition consisting essentially of a blend of (a) a polycarbonate and (b) a ... |
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| Process for the production of a polychloroprene latex which is stable to freezing and thawing |
| What we claim is: 1. In the process for producing a polychloroprene latex by radically polymerizing ... |
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| Two-step process for conditioning sized coal and resulting product |
| OF THE INVENTION The coal found to be most desirable for use in the process of this invention is ... |
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| Novel decapeptides, intermediates therefor, and compositions and methods employing said decapeptides |
| OF PREFERRED EMBODIMENTS The compounds of this invention are decapeptides represented by formula I ... |
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| Poly(ethylene terephthalate) blends |
| OF THE INVENTION (a) Poly(ethylene terephthalates) The poly(ethylene terephthalate) used herein is ... |
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| Chlorinated olefin polymer compositions stabilized with antimony trioxide |
| What is claimed is: 1. A composition of matter having an oxygen index value of at least about 20 as ... |
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| Heat sealable, flame and abrasion resistant coated fabric |
| We claim: 1. A flame retardant elastomeric composition for coating fabrics made from synthetic or ... |
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| Polyolefin with improved processing properties |
| We claim: 1. A method for improving the processing characteristics of extrudable, substantially ... |
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Single-coated optical fiber
| Details |
Inventors: Ansel, Robert E.; Cutler, Jr., Orvid R.;
Assignee: DeSoto, Inc. (Des Plaines, IL)
Primary Examiner: Bleutge; John C.
Assistant Examiner: Koeckert; Arthur H.
Attorney, Agent or Firm: Dressler, Goldsmith, Shore, Sutker & Milnamow, Ltd.
Radiation-curable coating compositions particularly adapted for the single coat coating of optical fibers are disclosed. These comprise (1) from 65% to 85% of a diethylenic-terminated polyurethane, which may contain urea groups, the polyurethane being based on a diisocyanate having an average molecular weight of from 400 to 5000; and (2) from 5% to 25% of an ether of a C.sub.2 -C.sub.4 alkylene glycol monoester of a monoethylenically unsaturated monocarboxylic acid, the ether being selected from the group consisting of ethoxyethyl, dicyclopentenyl, phenyl, and mixtures thereof. Ethoxyethoxyethyl acrylate is particularly preferred. A triacrylate ester, such as trimethylol propane triacrylate, is also desirably present. |
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DETAILED DESCRIPTION What is claimed is: 1.
A method of producing coated optical glass fiber comprising, applying to freshly formed optical glass fiber a coating of radiation-curable liquid coating composition comprising: (1) from 65% to 85% of the coating composition of a diacrylate-terminated polyurethane, said polyurethane being based on a diisocyanate having an average molecular weight of from 800 to 2500 and which is the reaction product of an organic diisocyanate with an aliphatic diol, said polyurethane containing from 2-4 urethane groups; (2) from 5% to 25% of the coating composition of an ether of a C.
sub.
2 -C.
sub.
4 alkylene glycol monoester of acrylic acid, the ether being selected from the group consisting of ethoxyethyl, dicyclopentenyl and phenyl ethers, and mixtures of said ethers, and (3) from 1% to 15% of the coating composition of a triacrylate ester, and then exposing the wet-coated fiber to radiation to cure the coating, said coating being a low microbending coating having a coefficient of thermal expansion of less than about 5.
6.
times.
10.
sup.
-5 at below the glass transition temperature of the coating.
2.
A method as recited in claim 1 in which said composition further includes a photoinitiator rendering the composition sensitive to ultraviolet light and the wet-coated fiber is exposed to ultraviolet light to cure the coating.
3.
A method as recited in claim 1 in which said aliphatic groups are selected from polyether, polyester and polyether-ester groups.
4.
A method as recited in claim 3 in which said diethylenic-terminated polyurethane is obtained from an hydroxyalkyl acrylate in which the alkyl group contains from 2 to 6 carbon atoms.
5.
A method as recited in claim 4 in which said acrylate is hydroxyethyl acrylate.
6.
A method as recited in claim 1 in which said alkylene glycol monoester is ethoxyethoxyethyl acrylate.
7.
A method as recited in claim 2 in which said alkylene glycol monoester is ethoxyethoxyethyl acrylate.
8.
A method as recited in claim 1 in which said triacrylate is trimethylol propane triacrylate
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Adhesives and Rubbers 
