Title:
ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2014/200071
Kind Code:
A1
Abstract:
Provided is an adhesive sheet that is such that the total organic carbon concentration in washing water during a dicing process and after the dicing process is an extremely low level, there is no spattering of chips during the dicing process, pick-up is easily performed, and it is difficult for glue residue to arise. The present invention provides an adhesive sheet resulting from laminating an adhesive layer onto a substrate, wherein the adhesive layer is a photocurable adhesive layer, the photocurable adhesive layer contains 100 parts by mass of a (meth)acrylic ester copolymer, 5-200 parts by mass of a photocurable compound, 0.1-20 parts by mass of a polyfunctional isocyanate curing agent, and 0.1-20 parts by mass of a photoinitiator, the weight average molecular weight of the photocurable compound is at least 500, the adhesive sheet is adjusted to the size of 50 mm x 50 mm, and the total organic carbon (TOC) concentration leaching out when immersed in 500 mL of pure water for 24 hours is no greater than 5.0 mg/L.
Inventors:
TSUKUI TOMOYA (JP)
NAKAJIMA GOSUKE (JP)
NAKAJIMA GOSUKE (JP)
Application Number:
PCT/JP2014/065629
Publication Date:
December 18, 2014
Filing Date:
June 12, 2014
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KK (JP)
International Classes:
C09J7/02; C09J4/00; C09J11/06; C09J133/06; C09J175/04; H01L21/301
Domestic Patent References:
| WO2012172959A1 | 2012-12-20 |
Foreign References:
| JP2011225706A | 2011-11-10 | |||
| JP2010258408A | 2010-11-11 |
Attorney, Agent or Firm:
EBISU International Patent Office (JP)
Patent business corporation エビス international patent firm (JP)
Patent business corporation エビス international patent firm (JP)
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