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Method for the production of a thin glassy coating on substrates in order to reduce gas permeation

A glass-like, substrate-based technology, applied in metal material coating process, coating, liquid chemical plating, etc., can solve the problems of high defect formation, unsatisfactory coating barrier effect, etc., and achieve high gas barrier effect Effect

Active Publication Date: 2011-03-30
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low layer thickness, defect formation is very high and the barrier effect of the coating is unsatisfactory

Method used

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  • Method for the production of a thin glassy coating on substrates in order to reduce gas permeation
  • Method for the production of a thin glassy coating on substrates in order to reduce gas permeation
  • Method for the production of a thin glassy coating on substrates in order to reduce gas permeation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] A 36 μm PET film was coated by dipping with a 3% solution of perhydropolysilazane in xylene (NP110) or dibutyl ether (NL120), dried at 100°C for 5 min, and coated with Xe 2 * Excimer radiation 30mW cm -2 (1 minute, 2500ppm O 2 , 10% relative humidity) oxidative transformation with a layer thickness of about 300 nm.

[0084] OTR (23°C, 0% relative humidity) = 0.2 or 0.3cm 3 m -2 sky -1 -bar -1

[0085] Uncoated comparative film: OTR = 45-50 cm for 36 micron PET film 3 m -2 sky -1 -bar -1

[0086] Barrier improvement factor (BIF) = OTR (uncoated) / OTR (coated)

[0087] BIF(NP110)=225-250 and BIF(NL120)=150-167

Embodiment 2

[0089] A 36 micron PET film was coated with a 3% solution of perhydropolysilazane in xylene (NP110) or dibutyl ether (NL120) with the addition of an amino catalyst (5% triethanolamine based on PHPS), by dipping Coating, drying at 100°C for 5 minutes, with Xe 2 * Excimer radiation 30mW cm -2 (1 minute, 2500ppm O 2 , 10% relative humidity) oxidative transformation with a layer thickness of about 300 nm.

[0090] OTR (23°C, 0% relative humidity) = 0.14 or 0.24cm 3 m -2 sky -1 -bar -1

[0091] Uncoated comparative film: OTR = 45-50 cm 3 m -2 sky -1 -bar -1

[0092] BIF(NP110+Kat)=321-357, or BIF(NL120+Kat)=188-208

[0093] WVTR (23°C, 90% relative humidity) = 1.0g m -2 sky -1 -bar -1

Embodiment 3

[0095] A 36 micron PET film was coated with a 3% solution of perhydropolysilazane in xylene (NN110) or dibutyl ether (NN120) with the addition of an amino catalyst (5% N,N-diethyl ethanolamine), coated by dipping, dried at 100°C for 5 minutes, and coated with Xe 2 * Excimer radiation 30mW cm -2 (1 minute, 2500ppm O 2 , 10% relative humidity) oxidative transformation with a layer thickness of about 300 nm.

[0096] OTR (23°C, 0% relative humidity) = 0.4 or 0.2cm 3 m -2 sky -1 -bar -1

[0097] Uncoated comparative film: OTR = 45-50 cm 3 m -2 sky -1 -bar -1

[0098] BIF(NN110+Kat)=113-125 or BIF(NN120+Kat)=225-250

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Abstract

Disclosed is a method for producing a glassy, transparent coating on a substrate by coating the substrate with a solution containing a) a polysilazane of formula -(SiR'R''-NR''')n-, wherein R', R , R''' are identical or different and independently represent hydrogen or an optionally substituted alkyl radical, aryl radical, vinyl radical, or (trialkoxysilyl) alkyl radical, n being an integer or being calculated such that the polysilazane has a number-average molecular weight ranging from 150 to 150,000 g / mol, and b) a catalyst in an organic solvent, and then removing the solvent using evaporation such that a polysilazane layer having a thickness of 0.05 to 3.0 mum remains on the substrate, and irradiating the polysilazane layer with VUV radiation having wavelength portions < 230 nm and UV radiation having wavelength portions ranging between 230 and 300 nm in an atmosphere containing steam in the presence of oxygen, active oxygen, and optional nitrogen.

Description

technical field [0001] The present invention relates to a method for converting thin (0.05-5 micron) coatings comprising perhydropolysilazanes (also known as PHPS) or organopolysilazanes as main constituents into an impermeable glass-like layer, the glass The outstanding features of the crystalline layer are transparency and high gas barrier effect. This is achieved by irradiating for the shortest possible treatment time (0.1-10 minutes) with VUV light with a wavelength < 230 nm and UV light with a wavelength < 300 nm at the lowest possible temperature as tolerated for the particular substrate. transform. Background technique [0002] It is known (K.Kamiya, T.Tange, T.Hashimoto, H.Nasu, Y.Shimizu, Res.Rep.Fac.Eng.Mie.Univ., 26, 2001, 23-31), at the PHPS layer During the heat treatment of the polymer backbone, the bonds of the alternating silicon and nitrogen atoms in the polymer backbone are broken by hydrolysis, the nitrogen and a part of the hydrogen bonded to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/16C08G77/62C08L83/16C08J7/048
CPCC08J2483/00C08J7/047C09D183/16C08G77/62C08J7/0427C23C18/143C08J7/048C08K5/17C08L83/16
Inventor S·布兰德A·迪多夫H·利贝F·奥斯特罗德S·斯托亚诺维卡L·普拉格尔R·梅纳特M·R·布赫迈泽尔
Owner MERCK PATENT GMBH