| 54 |
Title |
TI |
[DE] Verfahren zur Herstellung eines flexiblen und abriebbeständigen Überzugs und Lack zur Verwendung in diesem Verfahren
[EN] Flexible, wear-resistant coatings for carbonate], metal, etc. - by reaction of water with epoxy Gp.-contg. hydrolysable silane(s), esp. gamma-glycidyl-oxy-propyl-tri:methoxy-silane |
| 71/73 |
Applicant/owner |
PA |
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eV, 8000 München, DE
|
| 72 |
Inventor |
IN |
Arpac, Ertugrul, 8700 Würzburg, DE
;
Glaubitt, Walther, 8707 Veitshöchheim, DE
;
Naß, Rüdiger, 8705 Zellingen, DE
|
| 22/96 |
Application date |
AD |
Jun 26, 1990 |
| 21 |
Application number |
AN |
4020316 |
|
Country of application |
AC |
DE |
|
Publication date |
PUB |
Jan 9, 1992 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
|
| 51 |
IPC main class |
ICM |
C09D 183/04
|
| 51 |
IPC secondary class |
ICS |
C09D 163/00
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
C09D 183/06
C09D 183/14
|
|
MCD main class |
MCM |
|
|
MCD secondary class |
MCS |
C09D 183/06
(2006.01)
C09D 183/14
(2006.01)
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[DE] Es wird ein Lack auf der Basis von hydrolysierbaren Silanen beschrieben, der nach der Härtung zu hoch abriebbeständigen und flexiblen Überzügen führt und dadurch erhältlich ist, daß man eine oder mehrere hydrolysierbare Siliciumverbindungen, die einen Epoxidring aufweisen, mit Wasser in einem bestimmten Mengenbereich umsetzt. Die Härtung erfolgt vorzugsweise thermisch nach Zugabe eines tertiären Amins, insbesondere eines N-Alkylimidazols, als Polymerisationsinitiator für die Epoxygruppen. Besonders vorteilhafte Ergebnisse werden erhalten, wenn zusätzlich zum tertiären Amin ein cyclisches Carbonsäureanhydrid verwendet wird.
[EN] A process for the prodn. of paint (I), by reaction of hydrolysable silanes of formula R4Si (II) and/or corresp. oligomeric hydrolysis prods. thereof at not above 50 deg.C. with water in the mol. ratio water:(hydrolysable gps.) = (1:1)-(0.4:1); R = hydrolysable gps. (A), OH gps. or non-hydrolysable gps. (B); at least some of the (B) gps. contain an epoxide ring, and mol. ratio (A gps.):(epoxy gps.) = (6:1)-(0.5:1). Also claimed are paints (I) as such. Pref. (II) is a glycidyloxyalkyl- trialkoxysilane, esp. gamma-glycidyloxypropyl- trimethylsilane (IIA); mol. ratio (A gps.):(epoxy gps.) = (4.5:1)-(1.5:1), pref. (3.5:1)-(2.5:1), and mol. ratio (water):(B gps.) = (0.7:1)-(0.45:1), pref. (0.6:1)-(0.5:1); reaction is carried out in the presence of an acid or basic catalyst which causes no ring-opening under these conditions, pref. H.Hal (esp. HCl), carboxylic acid (esp. HCOOH or ACOH). Also claimed is a process for coating substrates (esp. polycarbonate, poly(meth)acrylate, rubbery polymers, PET or metals, partic. Al or Cu), by applying (I) and hardening the coating by heat or irradiation (opt. with added catalyst). % USE/ADVANTAGE - Provides an abrasion resistant coating material which is more flexible than prior - art polysiloxane-based coatings and is therefore suitable for coating flexible moulded prods., e.g. film; the coatings obtd. also have good adhesion and excellent optical properties, and are resistant to humidity and stress cracking. |
| 56 |
Cited documents identified in the search |
CT |
DE000002915066A1
DE000003407087C2
DE000003628048A1
DE000003709501A1
|
| 56 |
Cited documents indicated by the applicant |
CT |
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
|
|
Citing documents |
|
Determine documents
|
|
Sequence listings |
|
|
|
Search file IPC |
ICP |
B05D 7/26 O
C08G 77/02 P1
C08G 77/14 P2
C08G 77/46 P1
C08G 77/58 P1
C09D 163/00
C09D 183/04
|
