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Title:
ACRYLIC COPOLYMER AND COATING AGENT AND SHRINK FILM EACH USING THE SAME
Document Type and Number:
Japanese Patent JP2005008785
Kind Code:
A
Abstract:

To provide a shrink film in which long-term storage can be carried out without generating blocking of a roll in a state stored at ordinary temperature, and low-temperature shrink properties, resistance to natural shrinkage and ultraviolet ray-blocking property are improved while maintaining appearance and machinability, and an acrylic copolymer used for obtaining the shrink film.

The acrylic copolymer is obtained by copolymerizing 5-65 mass% at least one kind of ultraviolet ray-absorbing monomer selected from a benzophenone-based ultraviolet ray-absorbing monomer and a benzotriazole-based ultraviolet ray-absorbing monomer as an essential comonomer component. The acrylic copolymer has ≥10,000 number-average molecular weight (Mn) expressed in terms of polystyrene and 1.0-3.0 molecular weight distribution (Mw/Mn) represented by a ratio of a mass average molecular weight (Mw) expressed interms of polystyrene to Mn and 0-100°C glass transition temperature (Tg). The shrink film in which a coated film of the coating agent is formed is obtained by applying a coating agent containing the acrylic copolymer to a shrink film.


Inventors:
Sugimori, Saiji
Yamamoto, Ryuichi
Application Number:
JP2003000175877
Publication Date:
January 13, 2005
Filing Date:
June 20, 2003
Export Citation:
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Assignee:
IPPOSHA OIL IND CO LTD
International Classes:
C09D5/32; C08F216/14; C08F220/34; C08F220/54; C08F226/02; C08F246/00; C09D133/00; (IPC1-7): C08F220/34; C08F216/14; C08F220/54; C08F226/02; C08F246/00; C09D5/32; C09D133/00