US 8,137,803 B2Granted

Multilayer structure polymer and resin composition together with acrylic resin film material, acrylic resin laminate film, photocurable acrylic resin film or sheet, laminate film or sheet and laminate molding obtained by laminating thereof

AssigneeMitsubishi Rayon Co., Ltd.

InventorsYukio Kitaike, Yoshinori Abe, Junichi Abe, Koichiro Kitashima, Shogo Okazaki, Hideyuki Fujii

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Abstract

An acrylic resin film material comprising at least a multilayer structure polymer with a particular structure prevent a molded item from being whitened during insert- or in-mold molding and meet the requirement for surface hardness, heat resistance, and transparency or matting performance for vehicle applications. It is also possible to use an acrylic resin film material exhibiting a difference of 30% or less between haze values as determined in accordance with the testing method of JIS K7136 (haze measurement method) after and before a tensile test where a test piece with a width of 20 mm is pulled under the conditions of an initial inter-chuck distance of 25 mm, a rate of 50 mm/min and a temperature of 23° C. until an end-point inter-chuck distance becomes 33 mm as well as having a pencil hardness of 2 B or higher as determined in accordance with JIS K5400.

Claims6

Dependent claims

A laminate molded item comprising an acrylic resin film material (A) laminated on a base (E), wherein the acrylic resin film material (A) comprises a multilayer structure polymer (I), which comprises

(1) an innermost layer polymer (I-A),
(2) an intermediate layer polymer (I-B) with a glass-transition temperature of 25 to 100° C. comprising a composition different from that of the innermost layer polymer (I-A), and
(3) an outermost layer polymer (I-C),
wherein the innermost layer polymer (I-A) comprises
(I-A1) an alkyl acrylate in 50 to 99.9 wt %,
(I-A2) an alkyl methacrylate in 0 to 49.9 wt %,
(I-A3) another monomer comprising a copolymerizable double bond in 0 to 20 wt %,
(I-A4) a multifunctional monomer in 0 to 10 wt %, and
(I-A5) a graft crosslinker in 0.1 to 10 wt %;
wherein the intermediate layer polymer (I-B) comprises
(I-B1) an alkyl acrylate in 9.9 to 90 wt %,
(I-B2) an alkyl methacrylate in 9.9 to 90 wt %,
(I-B3) another monomer comprising a copolymerizable double bond in 0 to 20 wt %,
(I-B4) a multifunctional monomer in 0 to 10 wt %, and
(I-B5) a graft crosslinker 0.1 to 10 wt %;
and
wherein the outermost layer polymer (I-C) comprises
(I-C1) an alkyl methacrylate in 80 to 100 wt %,
(I-C2) an alkyl acrylate in 0 to 20 wt %, and
(I-C3) another monomer comprising a copolymerizable double bond in 0 to 20 wt %, and
a thermoplastic polymer (II) comprising an alkyl methacrylate.

18 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/831,436Filed 7 Jul 2010 · division
Priority: JP 2003-00442710 Jan 2003
Published: US 2010/0273019 A128 Oct 2010
Granted: 20 Mar 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification27 codes

B32B 27/30
Layered products comprising a layer of synthetic resin: comprising vinyl polymers; comprising acrylic polymers
B29C 45/14811
The article consisting of a material with particular properties, e.g. porous, brittle: multilayered articles
B32B 27/08
As the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
B32B 27/18
Layered products comprising a layer of synthetic resin: characterised by the use of special additives

Family

PCT/JP03/16951Parent of this division · filed 26 Dec 2003
US 2010/0273019 A1Pre-grant publication · published 28 Oct 2010
Application10/541,729Parent of this division
US 7,781,062 B2Parent of this division
US 2006/0110617 A1Published application
US 8,137,803 B2This patent

From the US filing history. Foreign family members aren’t listed.