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Removing agent, mold-release material, and adhesive tape

A technology of peeling agent and adhesive tape, applied in the field of peeling agent, can solve the problems of high peeling force and reduced usability, and achieve the effect of excellent processability

Inactive Publication Date: 2012-07-11
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the peel rate is high, the peel force becomes high, which tends to reduce usability

Method used

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  • Removing agent, mold-release material, and adhesive tape
  • Removing agent, mold-release material, and adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] TAFMER P-0280 / Epole / CORONATE L / dibutyltin dilaurate=100 / 2 / 3 / 1 (weight ratio of solid content) was dissolved in toluene to give a stripper solution having a concentration of 1.5%. This release agent solution was coated onto a 38 μm thick polyester film using a Meyer rod #6 and heated at 130° C. for 1 min by a hot air dryer. The thickness of the release agent layer of the obtained separation material was about 150 nm.

Embodiment 2

[0130] Prepared in the same manner as in Example 1 except that the composition of the release agent was set to TAFMER P-0280 / Epole / CORONATE L / dibutyltin dilaurate = 100 / 2 / 10 / 0.2 (weight ratio of solid content) separate material.

Embodiment 3

[0132] In addition to setting the composition of the release agent to TAFMER P-0280 / TAFMER P-0080K / Epole / CORONATE L / dibutyltin dilaurate = 60 / 40 / 1 / 5 / 0.2 (weight ratio of solid content), with The separation material was prepared in the same manner as in Example 1.

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Abstract

Provided is a removing agent that contains, at least, a nonreactive polyolefin, an aromatic isocyanate that contains at least three isocyanate groups per molecule, and a polyolefin polyol. At least 80% by weight of the removing agent consists of the nonreactive polyolefin, and at least 90% by weight of the nonreactive polyolefin consists of a nonreactive polyolefin that at 23 DEG C has a tensile elastic modulus of at most 10 MPa and a tensile failure stress of at most 8 MPa.

Description

technical field [0001] The present invention relates to a release agent containing polyolefin, which is excellent in adhesion to a substrate and has a release force with low dependence on a peel rate, and to a release material containing the agent, and also It relates to an adhesive tape containing the release agent. Background technique [0002] The release material has a release agent layer on at least one surface of a substrate such as paper, plastic film, or plastic-laminated paper, and is used to protect the adhesive surface of an adhesive tape, adhesive sheet, label, etc., and to use In the manufacturing process of ceramic printed circuit boards, etc. [0003] The types of release agents include silicone-based release agents, long-chain alkyl-based release agents, polyolefin-based release agents, and fluorinated release agents, and they are used in different ways depending on the purpose. Among these, silicone-based release agents are problematic because they may cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00B32B27/00C08G18/00C08G18/62C09J7/00C09J7/02C09J7/22
CPCC08G18/794C08L75/04C08G18/6204C08G18/6212C09J2423/005C09J7/22C09J7/201C09J2475/005C08L2666/08C08L2666/06C08L2666/04
Inventor 平松刚伊关亮
Owner NITTO DENKO CORP