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Silicone based adhesive protective film and optical member comprising the same

An adhesive and protective film technology, used in optical components, optics, film/sheet adhesives, etc., can solve problems such as deformation, increase peel strength, damage to adherends, etc.

Active Publication Date: 2020-07-07
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such an acrylate or urethane acrylate-based adhesive protective film has a remarkably increased peel strength when left for a long time after being attached to an adherend, and thus when peeled off from the adherend May cause deterioration of processability and damage and / or deform adherends

Method used

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  • Silicone based adhesive protective film and optical member comprising the same
  • Silicone based adhesive protective film and optical member comprising the same
  • Silicone based adhesive protective film and optical member comprising the same

Examples

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Effect test

example 1

[0137] (1) Preparation of the first silicone resin (I)

[0138] As the first silicone resin, a dimethylvinylsiloxane-dimethylsiloxane-dimethylvinylsiloxane resin whose molecular chains are both terminated with dimethylvinylsiloxane was used. The first silicone resin contained 900 dimethylsiloxane units and had a weight average molecular weight of 65,000.

[0139] First, 21.6g of [Vi(Me) 2 SiO 1 / 2 ] SiO 4 / 2 and 592.6 g of octamethylcyclotetrasiloxane were introduced into a nitrogen-filled reactor, followed by heating to 150°C. Next, 50 ppm of linear polyaminophosphazenium hydroxide catalyst ([Py3-N-(P=NPy 2 )1.8-PPy 3 ] + Oh - (where Py is pyrrolidine)), followed by neutralization for 1 min with stirring. Next, the reactor was cooled to room temperature, followed by removal of volatile substances, thereby preparing a first silicone resin (I).

[0140] (2) Preparation of the second silicone resin (1)

[0141] Dimethylvinylsiloxane-Dimethicone-Methylhexenylsiloxane-Dime...

example 7

[0152] Except using 7646 silicone resin (II) (Dow Chemical, molecular weight: 124,000) as shown in Table 1 instead of the first silicone resin (I) as the first silicone resin and changing the first silicone resin Except the amount of (II) and the second silicone resin (I), a silicone-based adhesive protective film was prepared in the same manner as in Example 1.

example 8

[0154] A silicone-based adhesive was prepared in the same manner as in Example 1, except that 7664 silicone resin (II) (Dow Chemical, molecular weight: 554,000) was used instead of the second silicone resin (I) as the second silicone resin. protective film.

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Abstract

A silicone-based adhesive protective film and an optical member including the same are provided. The silicone-based adhesive protective film is formed of a composition including a silicone resin, a crosslinking agent, and a curing catalyst, and the silicone-based adhesive protective film has a peel strength of about 3 gf / inch or less with respect to a glass plate at 25 DEG C., and a modulus of about 0.5 MPa to about 7 MPa at 25 DEG C. The silicone-based adhesive protective film of the present disclosure has low peel strength, a low peel strength change rate, and good wettability.

Description

[0001] [Cross-reference to related applications] [0002] This application claims the benefit of Korean Patent Application No. 10-2018-0173918 filed with the Korean Intellectual Property Office on December 31, 2018, the entire disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates to a silicone-based adhesive protective film and an optical member including the silicone-based adhesive protective film. More specifically, the present invention relates to a silicone-based adhesive protective film having low peel strength, a low peel strength change rate, and good wetting properties, and an optical lens comprising the silicone-based adhesive protective film. member. Background technique [0004] Optical displays are used, stored and manufactured in increasingly harsh environments. Furthermore, there is increasing interest in new types of optical displays such as wearable displays and foldable displays. Therefore, an adhe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L83/07C08L83/05G02B1/14G09F9/30
CPCC08J5/18G02B1/14G09F9/301C08J2383/07C08J2483/07C08J2483/05C09J7/30C09J2483/00C09J2203/318C09J7/401C09J11/06C09J2203/00C09J2301/312C09J183/04C08G77/20C08G77/12G02B1/18C08L83/00C08K5/56G02B1/04C09J7/38C08L83/04C09J183/06C09K2323/053
Inventor 韩东一金泰志金源金一鎭申东明
Owner SAMSUNG SDI CO LTD
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