 Corrosion-resistant coated copper metal and method for making the same |
| The present invention relates to a product and method of producing a corrosion-resistant, ... |
|
| Process for the production of a coated copper alloy |
| The present invention has been accomplished to solve the above-mentioned problems, and provides a ... |
|
| Copper foil for printed wiring board having excellent chemical resistance and heat resistance |
| The copper foil for a printed wiring board according to the invention comprises a copper foil, an ... |
|
| Process for the non-galvanic tin plating of copper or copper alloys |
| What is claimed is: 1. A bath for non-galvanic plating of a tin layer onto a copper or copper alloy ... |
|
| Ink jet printer |
| What is claimed is: 1. An ink jet printer, comprising at least one nozzle which is connected, via a ... |
|
| Anthraquinone-bis-amidines and process for preparing them |
| We claim: 1. An anthraquinone-bis-amidine of the formula: ##STR10## in which R.sup.1, R.sup.2 and R.... |
|
| Pad dyeing process for wool |
| What is claimed is: 1. A pad cold batch process for dyeing wool with reactive dyes, which comprises ... |
|
| Organofunctional silane coupling agent-powder mixtures |
| What is claimed is: 1. A powder silane mixture in which the silane comprises 40 to about 80 weight ... |
|
| Backup electrode for an electrostatic recorder |
| What is claimed is: 1. An electrostatic recorder for forming an electrostatic image on a recording ... |
|
| Polyetherimide composites |
| What I claim as new and desire to secure by Letters Patent of the United States is: 1. P... |
|
|
Optical fibres based on polycarbonate fibres, and a process for the production thereof
| Details |
Inventors: Ebert, Wolfgang; Haese, Wilfried; Vogelsgesang, Roland; Dhein, Rolf;
Assignee: Bayer Aktiengesellschaft (Leverkusen, DE)
Primary Examiner: Lee; John D.
Assistant Examiner:
Attorney, Agent or Firm: Sprung Horn Kramer & Woods
A process for the production of optical fibers based on aromatic polycarbonates wherein the polycarbonate fibres are coated with a plastic, the improvement which comprises (a) to coat the fiber with an UV irradiation-polymerizable mixture which comprises (A) 25 to 75% by weight, based on the total weight of the polymerizable compounds, of a polyfunctional (meth)acrylic acid derivative of the formula ##STR1## (B) 75 to 25% by weight, based on the total weight of the polymerizable compounds, of a monofunctional (meth)acrylate of the formula ##STR2## (C) 0.1 to 10% by weight, based on the total weight of the polymerizable compounds, of a photoinitiator, and (b) to polymerize this mixture on the fibre by UV irradiation. |
|
DETAILED DESCRIPTION What is claimed is: 1.
In the process for the production of optical fibres based on aromatic polycarbonates wherein the polycarbonate fibres are coated with a plastic, the improvement which comprises (a) to coat the fibre with an UV irradiation-polymerisable mixture which comprises (A) 25 to 75% by weight, based on the total weight of the polymerisable compounds, of a polyfunctional (meth)acrylic acid derivative of the formula ##STR10## in which m is 2, 3 or 4, D is the m-valent radical of an aliphatic or aromatic hydrocarbon, R.
sub.
1 is hydrogen or methyl, Z.
sub.
1, Z.
sub.
2 and Z.
sub.
3, independently of one another, are oxygen, sulphur, the --N(R)-- group (in which R is hydrogen, alkyl, substituted alkyl, aralkyl, substituted aralkyl, aryl or substituted aryl or a divalent radical of the formula ##STR11## in which Z is oxygen, sulphur or the --N(R)-- group, and A is a divalent radical of an aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon or a substituted divalent radical of an aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon, Z.
sub.
4 is oxygen, the divalent radical of the formula (II) or one of the following divalent radicals ##STR12## A.
sub.
1, A.
sub.
2, A.
sub.
3 and A.
sub.
4, independently of one another are a divalent radical of an aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon or a substituted divalent radical of an aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon, n is zero or an integer from 1 to 20.
p, q and r, independently of one another, may adopt the value zero or 1, and l has a numerical value such that the molecular weight of the polyfunctional (meth)acrylic acid derivative of the formula (I) is 450 to 5000, (B) 75 to 25% by weight, based on the total weight of the polymerisable compounds, of a monofunctional (meth)acrylate of the formula ##STR13## in which R.
sub.
2 is hydrogen or methyl, A.
sub.
5 is a divalent radical or a substituted divalent radical of an aliphatic or cycloaliphatic hydrocarbon, Z.
sub
|
| Related patents |
|
|
High temperature polyether imide compositions and method for making
What is claimed is: 1. A blend of 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane/bis(4-aminophenyl) sulfone polyetherimide and 3,3', 4,4'-tetracarboxybiphenyl/bis(4-...
|
|
|
Digital video disk substrate
What is claimed is: 1. A digital video disk substrate of a polycarbonate having a viscosity-average molecular weight Mv of from 10,000 to 17,000 and a weight-average ...
|
|
|
Optical information recording medium
It is an object of the present invention to provide an optical information recording medium excellent in durability and reflectance of an information recording medium ...
|
|
|
Resist hardening process having improved thermal stability
OF THE PREFERRED EMBODIMENTS With reference to FIGS. 7a-b, a method for hardening photoresists according to the present invention will be described. It has been ...
|
|
|
Optical disk employing integral substrate, and method for manufacturing the same
It is an object of the present invention to overcome the above problems encountered in prior art and to provide an integral substrate the opposite sides of which are ...
|
|
|
Aminium salt or diimonium salt compounds and use thereof
What is claimed is: 1. An aminium salt or diimonium salt compound consisting the aminium or diimonium cation and an anion, said aminium cation having a skeletal ...
|
|
|
Process for the production of an aluminum triformate solution containing alkali metal and/or alkaline earth metal, highly concentrated aluminum triformate solutions containing alkali and/or alkaline earth metal, and their use
The invention claimed is: 1. A process for the production of a solution comprising aluminum triformate by neutralization of an aqueous aluminate liquor containing ...
|
|
|
Method for production of feed for salmonides and feed for salmonides
What is claimed is: 1. A method for production of fish feed, comprising fish products and fish feed components, comprising ammonium diformate, sodium diformate, or ...
|
|
|
Wood preservatives
What we claim is: 1. A chromium-free wood preservative consisting essentially of 1 to 35% by weight of a mixture of 25 to 75 parts by weight of a fatty amine ethoxylate ...
|
|
|
Method for coating a metal strip
The present invention relates to a product and method of producing a corrosion-resistant, environmentally friendly metal material. More specifically, the invention ...
|
|
|
Manufacturing Materials 
