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Method for preventing fogging when coating a flexible carrier with a crosslinkable liquid silicone composition in a roll device

A technology of roll coating and silicone coating, which is applied to the device and coating of surface coating liquid, which can solve the problems of not providing quantitative factors for evaluation, and achieve the effect of improving hygiene and safety conditions

Active Publication Date: 2022-07-26
ELKEM SILICONES FRANCE SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] For the latter point, the patent US6057033 does not provide any quantitative factors to evaluate the reduction of fogging brought by cellulose fibers

Method used

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  • Method for preventing fogging when coating a flexible carrier with a crosslinkable liquid silicone composition in a roll device
  • Method for preventing fogging when coating a flexible carrier with a crosslinkable liquid silicone composition in a roll device
  • Method for preventing fogging when coating a flexible carrier with a crosslinkable liquid silicone composition in a roll device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0343] 1) Preparation of anti-fogging additive E:

[0344] In the following examples, the following compounds were used.

[0345] F1: Organopolysiloxane of the formula with 31 mmol of acrylate functionality per 100 g.

[0346]

[0347] F2: Silmer ACR Supplier Siltech Corporation, which is a dimethylpolysiloxane with two acrylate functional groups at the chain ends, with 50 mmol of acrylate functional groups per 100 grams.

[0348] G1: Organopolysiloxane with the same general formula as F1, with 199 mmol of acrylate functionality per 100 g.

[0349] H1: Hexylene glycol acrylate with 885 mmol of acrylate functionality per 100 grams.

[0350] N1: Organopolysiloxane of the formula, having 43 mmol of amine functionality per 100 g.

[0351]

[0352] isopropyl alcohol

[0353] Synthesis of branched polymers:

[0354] All compounds tested as anti-fogging additives were synthesized by the same method.

[0355] Compounds F, G, H and N were introduced into the flask in th...

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Abstract

The present invention relates to the general field of coating various flexible supports such as paper or synthetic polymers (polyolefins, polyesters, etc.) or textiles with silicone on high speed rolls. The present invention relates to an efficient method for preventing fogging when coating flexible supports with liquid silicone compositions as precursors for cross-linked coatings by means of roll coating apparatus operating at high speed conduct.

Description

technical field [0001] The present invention relates to the general field of coating various flexible supports such as paper or synthetic polymers (polyolefins, polyesters, etc.) or textiles with silicone on high speed rolls. [0002] More particularly, the present invention relates to coating flexible materials with liquid compositions comprising one or more organopolysiloxanes crosslinkable by polyaddition, dehydrocondensation, polycondensation, cationic route or free radical route to A protective film or coating is formed with particularly anti-stick and / or hydrophobic properties. Background technique [0003] The flexible carrier can be paper, cardboard, plastic film, metal film or textile. Applications of these silicone-coated supports are, for example: food paper (baking, packaging), adhesive labels and tapes, conveyor belts and the like. [0004] The coating of these flexible supports with the crosslinkable liquid silicone is carried out in a coating apparatus opera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/06C08L83/06
CPCC08G77/20C08G77/26C08L83/06C09D183/06C08L83/00C09D7/40B05D1/28
Inventor G·皮布雷S·贝尼努E·布格特
Owner ELKEM SILICONES FRANCE SAS
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