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Primer silicone composition and treated paper or film for release paper or film

一种有机硅、组合物的技术，应用在底漆、薄料处理、纺织品和造纸等方向，能够解决改善有机硅组合物粘合性等问题

Inactive Publication Date: 2012-03-28
SHIN ETSU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As mentioned above, there is no suitable technology in the art that can improve the adhesion of silicone compositions without affecting the release performance

Method used

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  • Primer silicone composition and treated paper or film for release paper or film
  • Primer silicone composition and treated paper or film for release paper or film
  • Primer silicone composition and treated paper or film for release paper or film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-17

[0185] Embodiment 1-17, comparative example 1-8

[0186] Components (A) and (B) were mixed in the amounts shown in Table 1 to prepare a primer silicone composition. The composition is coated with a coating weight of 0.005g / m 2 Coated onto PET or OPP substrates with an integral dose of 50mJ / cm at a line speed of 40m / min 2 It was exposed to UV radiation from two 80-W bulbs and heat treated at 80° C. for 10 seconds in a hot air circulating dryer to form a primed substrate.

[0187] Components (C), (D) and (F) in the amounts shown in Table 1 and (E) in an amount capable of providing 100 ppm platinum based on the total weight of (C)+(D) were mixed to prepare the overlying composition or stripping composition. The release silicone composition is 0.5g / m 2 Coating Weight Coating was applied on a primed substrate, and heat-cured at 100° C. for 30 seconds to form a release film, which was evaluated according to the evaluation method described later.

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Abstract

A silicone primer is provided comprising an adhesion-providing component which is an alkenyl-containing siloxane of specific structure and / or a compound containing a substituent group having a functional group capable of radical reaction upon exposure to heat and / or UV and a substituent group having a group capable of reaction with alkenyl and / or SiH group. A release paper or film is prepared by coating the silicone primer on a paper or plastic film substrate, exposing it to UV to form a primer layer, overlaying the primed surface with a release silicone composition, and curing the composition.

Description

technical field [0001] The present invention relates to primer silicone compositions suitable for the preparation of release paper or film with improved adhesion and to paper or film substrates treated with the compositions. technical background [0002] It has long been known that release liners for tacky materials, typically pressure sensitive adhesives, are formed by forming a release cured coating on the surface of substrates such as paper, laminated paper and plastic films. preparation. Of these materials, silicone compositions are used to form cured coatings with release properties. For example, JP-A S62-86061 discloses a silicone composition comprising an alkenyl group-containing organopolysiloxane, an organohydrogenpolysiloxane and a platinum-based compound. [0003] Silicone compositions of this type still predominate today due to their curing behavior and shelf life. However, insufficient adhesion between the cured coating and the substrate has been pointed out....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/07C09D183/05C09D5/20D21H19/10C09J7/40
CPCC09J2483/003C09J7/0225C09J2400/283C09D183/04C08G77/12C09J2483/005C08G77/20C09J2205/31C09J7/40Y10T428/31663C09J2301/416C08L83/00C08L83/04D21H19/32C08L2205/02C09D5/002
Inventor 山本谦儿青木俊司
Owner SHIN ETSU CHEM CO LTD
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