# US 2014/0154450 A1 · Adhesive tape or sheet

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- Number: US 2014/0154450 A1
- Document ID: US20140154450A1
- Status: Published application
- Kind: A1
- Application number: 14/003,974
- Filed: 2012-03-02
- Published: 2014-06-05
- Earliest claimed: 2011-03-08
- Assignees: Nitto Europe N.V.; Nitto Denko Corporation
- Inventors: Takumi Yutou; Fumiteru Asai; Toshio Shintani; Toshitaka Suzuki; Minoru Hanaoka; Edwin Thys; Bart Forier
- Web page: https://patentgrep.com/patent/US20140154450A1

## CPC

- C09J 7/245: {Vinyl resins, e.g. polyvinyl chloride [PVC]}
- H10P 72/7402: {Wafer tapes, e.g. grinding or dicing support tapes}
- C08K 5/0016: {Plasticisers}
- C08L 27/06: Homopolymers or copolymers of vinyl chloride
- C09J 2203/326: for bonding electronic components such as wafers, chips or semiconductors
- C09J 2301/41: additives as essential feature of the carrier layer
- C09J 2427/006: in the substrate
- C09J 2433/00: Presence of (meth)acrylic polymer
- C09J 2467/006: in the substrate
- H10P 72/7416: {used during dicing or grinding}
- H10P 72/7422: {used to protect an active side of a device or wafer}
- H10P 72/744: {Details of chemical or physical process used for separating the auxiliary support from a device or a wafer}
- Y10T 428/1462: Polymer derived from material having at least one acrylic or alkacrylic group or the nitrile or amide derivative thereof [e.g., acrylamide, acrylate ester, etc.]
- Y10T 428/2891: including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- H10P: GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A polyvinyl chloride-based adhesive tape or sheet has a base material layer formed to include 10 to 40 parts by weight of plasticizing agent(s) in relation to 100 parts by weight of a polyvinyl chloride-based resin and an adhesive layer on one surface of the base material layer, the plasticizing agent includes at least one type of plasticizing agent having an SP value of at least 9.0.

## Claims

### Claim 1

A polyvinyl chloride-based adhesive tape or sheet comprising;
a base material layer formed to include 10 to 40 parts by weight of plasticizing agent(s) in relation to 100 parts by weight of a polyvinyl chloride-based resin and
an adhesive layer on one surface of the base material layer,
the plasticizing agent includes at least one type of plasticizing agent having an SP value of at least 9.0.

### Claim 2 (depends on 1)

The polyvinyl chloride-based adhesive tape or sheet of claim 1,
wherein the plasticizing agent having an SP value of at least 9.0 is an low molecular weight polyester plasticizing agent having a number average molecular weight Mn of 800 to 1500 and a weight average molecular weight Mw of 800 to 2000.

### Claim 3 (depends on 2)

The polyvinyl chloride-based adhesive tape or sheet of claim 2,
wherein the low molecular weight polyester plasticizing agent is an adipate-based polyester plasticizing agent.

### Claim 4 (depends on 2)

The polyvinyl chloride-based adhesive tape or sheet of claim 2,
wherein the low molecular weight polyester plasticizing agent is a plasticizing agent having isononyl terminal or n-octyl terminal.

### Claim 5 (depends on 1)

The polyvinyl chloride-based adhesive tape or sheet of claim 1,
wherein the plasticizing agent is substantially free from 2-diethylhaxyl phthalate and dibutyl phthalate.

### Claim 6 (depends on 1)

The polyvinyl chloride-based adhesive tape or sheet of claim 1,
wherein the adhesive layer includes acrylic polymer as a base polymer and set an SP value of 8.9 to 9.5.

### Claim 7 (depends on 1)

The polyvinyl chloride-based adhesive tape or sheet of claim 1, further comprising a separator on a surface of the adhesive layer.