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Tape base and adhesive tape

A base material, aromatic vinyl technology, applied in adhesives, adhesive types, transportation and packaging, etc., can solve the problems of low oil resistance, softness, hand tearing and abrasion resistance of adhesive tapes, etc. problem, to achieve the effect of excellent oil resistance

Inactive Publication Date: 2009-06-10
DENKA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As an adhesive tape using such a non-halogen resin composition, an adhesive tape using a composition containing an olefin-based polymer and an inorganic flame retardant as a tape substrate has been proposed (see Patent Document 1), and a benzene-based adhesive tape has been proposed. The vinyl polymer composition is an adhesive tape with a substrate (refer to Patent Document 2), but when used as an adhesive tape for wrapping complex wires and cables such as automobile engine compartments, there are cases where flexibility, hand tearing and resistance There is a problem with abrasiveness
[0004] In addition, adhesive tapes using non-stereoregular ethylene-styrene copolymers obtained by CGC catalyst technology have also been proposed (see Patent Documents 3 and 4), but these adhesive tapes have low oil resistance, and especially Yes, use in car engine compartments and use in vehicles, workshops, etc. can sometimes be a problem

Method used

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  • Tape base and adhesive tape
  • Tape base and adhesive tape
  • Tape base and adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0088] Hereinafter, the present invention will be described in more detail based on examples, but the explanation of the present invention is not limited to these examples. It should be noted that units such as "part" and "%" are expressed on a mass basis unless otherwise specified.

[0089] The analysis of the copolymer obtained in the Example was implemented by the following method.

[0090] .

[0091] Using α-500 manufactured by JEOL Ltd., the measurement was performed based on TMS using a heavy 1,1,2,2-tetrachloroethane solvent. The TMS-based measurement referred to here refers to the measurement described below. First, the shift value of the central peak of the triplet 13C-NMR peak of heavy 1,1,2,2-tetrachloroethane was determined based on TMS.

[0092] Next, dissolve the copolymer in heavy 1,1,2,2-tetrachloroethane, measure 13C-NMR, and calculate based on the triplet central peak of heavy 1,1,2,2-tetrachloroethane Each peak displacement value. The shift value of the...

Synthetic example 1

[0132] (Synthesis of ethylene-aromatic vinyl compound copolymer with isotactic stereoregularity)

[0133] As a catalyst, use figure 1 The indicated rac-dimethylmethylenebis(4,5-benzo-1-indenyl)zirconium dichloride was carried out as described below.

[0134] Polymerization was carried out using an autoclave having a capacity of 10 L and equipped with a stirrer and a jacket for heating and cooling. Put 1900ml of styrene and 2900ml of cyclohexane into the autoclave, heat and stir until the inner temperature is 60°C. Then, about 100 L of nitrogen was bubbled to purify the inside of the system and the polymerization solution. Then, 8.4mmol of triisobutylaluminum and 16.8mmol of methylalumoxane (manufactured by TOSOHFINECHEM Co., Ltd., MMAO-3A) based on Al were added, and ethylene was immediately introduced to stabilize at a pressure of 0.98MPa (10Kg / cm2G). , 8.4 μmol of rac-dimethylmethylene bis(4,5-benzo-1-indenyl) zirconium dichloride, dissolved in triisobutyl The toluene so...

Synthetic example 2

[0137] The styrene used was changed to 2400 ml, the cyclohexane was changed to 3600 ml, the ethylene pressure was changed to 0.6 MPa, the amount of catalyst was changed to 16.8 μmol, and the polymerization was changed to 1 hour and 50 minutes, in the same manner as in Synthesis Example 1 Carried out to obtain 920 g of polymer B.

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Abstract

Disclosed is a tape base exhibiting excellent oil resistance, while having flexibility, cuttability by hand and heat resistance in a balanced manner. Also disclosed is an adhesive tape using the tape base. Specifically disclosed is a tape base containing an ethylene-aromatic vinyl compound copolymer having an isotactic tacticity. In the copolymer structure of the ethylene-aromatic vinyl compound copolymer, the isotactic diad fraction m of Ph (aromatic group) in the alternating structure of ethylene and the aromatic vinyl compound represented by the formula (1) below is preferably more than 0.75. (1) (In the formula, Ph represents an aromaticgroup, and xa represents the number of repeating units, which is an integer of not less than 2).

Description

technical field [0001] The present invention relates to a tape base using a specific ethylene-aromatic vinyl compound copolymer and an adhesive tape using the tape base. Background technique [0002] In the field of various adhesive tapes such as insulating tapes used in vehicles such as automobiles and trains, and other electrical equipment such as aircraft, ships, houses, and factories, due to its moderate flexibility and elongation, it is excellent in flame retardancy. It is excellent in properties, mechanical strength, heat deformation resistance, electrical insulation, and moldability, and is relatively inexpensive. Therefore, belts made of resin compositions containing halogenated vinyl resins such as polyvinyl chloride have been used as raw materials. Such halogenated vinyl resin tapes generate toxic gas during incineration, so recently, tapes made of non-halogen resin compositions containing a large amount of metals with a small environmental load in polyolefin resin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08F210/02C09J7/02C09J7/24
CPCC09J153/00C09J2423/006C09J7/0267C08F210/02C08L51/003C09J123/0838C08L23/10C09J151/04C08L51/04C09J2205/114C08F4/65912C09J151/003C09J123/10C08L53/00C09J2425/006C09J7/24C08L2666/02C08L2666/06Y10T428/28C09J2301/414C08F4/65927C08F212/08
Inventor 莲见水贵斋田诚二长谷川胜铃木茂见山彰塚本步荒井亨
Owner DENKA CO LTD
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