The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1991
Filed:
Dec. 16, 1988
Siegfried Birkle, Hoechstadt A/Aisch, DE;
Hans-Dieter Feucht, Erlangen, DE;
Rainer Kamps, Coburg, DE;
Eva Rissel, Forchheim, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
The invention provides a radiation-curable liquid resin useful as a secondary coating of lightwave guides. The resin is a reaction product of (meth)acrylic acid or glyceroldi (meth)acrylate or Pentaerythritoltri(meth)acrylate with a 2:1 addition compound of a diepoxide and an .alpha., .omega.-diol with a mean molecular weight between 600 and 3000, or, a reaction product of (meth)acrylic acid or -acid chloride or isocyanatoalkyl-(meth)acrylate with a conversion product of the 2:1 addition compound and a low-molecular monovalent alcohol (C.sub.1 to C.sub.10), a low-molecular bivalent alcohol (C.sub.2 to C.sub.4) or water, where the diepoxide is an aromatic diglycidylether and the .alpha.,.omega.-diol is an .alpha., .omega.-hydroxy-terminated polyoxyalkylene, an .alpha., .omega.-hydroxy-terminated polyester, an .alpha.,.omega.-hydroxy-terminated polybutadiene or an .alpha.,.omega.-hydroxy-terminated organo-functional polysiloxane.