Patent Number: 8,795,843

Title: Acrylic film for punching, surface light-source device and process for manufacturing optical member

Abstract: Provided is an acrylic film for punching excellent in transparency and free from breakage or whitening even if it is punched. The present invention is an acrylic film for punching containing a polymer (C) containing a di(meth)acrylate (A) unit represented by general formula (1) below and a mono(meth)acrylate (B) unit: --CH.sub.2--CR.sup.1--COO--(X).sub.n--COCR.sup.1--CH.sub.2-- (1) wherein (X) represents at least one repeat unit selected from C.sub.2H.sub.4O, C.sub.3H.sub.6O and C.sub.4H.sub.8O; the molecular weight of (X).sub.n is 500 or more; and R.sup.1 represents H or CH.sub.3.

Inventors: Konokawa; Yuuhei (Hiroshima, JP), Satou; Yoshiaki (Hiroshima, JP), Fujiyama; Kousuke (Hiroshima, JP), Nabeshima; Yasuhiko (Hiroshima, JP), Yamashita; Tomoyoshi (Kanagawa, JP)

Assignee: Mitsubishi Rayon Co., Ltd.

International Classification: B32B 27/32 (20060101); B32B 27/00 (20060101); B29D 11/00 (20060101); C08F 2/46 (20060101)

Expiration Date: 8/05/12018