Molding material and molding

Patent metadata

Field	Value
Publication number	US-9534065-B2
Application number	US-201214123158-A
Country	US
Kind code	B2
Filing date	May 30, 2012
Priority date	May 30, 2011
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

An object of the invention is to provide a molding with suppressed coloring which has good weather resistance and in which the advantageous effect does not decrease with time. The present invention provides a molding material comprising a polymer (A) obtained by polymerizing 0.01 to 35 mol % of monomer (a1) represented by a specified formula (1) and 65 to 99.99 mol % of monomer (a2) whose main component is methylmethacrylate.

First claim

The invention claimed is:

1. A molding material, consisting essentially of
a polymer (A) obtained by polymerizing 0.01 to 35 mol % of monomer (a1) of formula (1) and 65 to 99.99 mol % of monomer (a2) whose main component is methyl methacrylate, and
optionally one or more of materials other than the polymer (A) selected from the group consisting of an organic polymer of polyolefins; an acrylic polymer; a styrene polymer: a polyester; a polyimide; a boric acid ester; a phosphoric acid ester; glass in a fiber, small plate, or granular form; a metallic oxide; a UV absorber; a light stabilizer, an antioxidant; an antistatic agent; an antimicrobial agent; a flame retardant; an impact modifier a light diffusing agent; a chain transfer agent; a filler; and a reinforcing agent,

wherein
R 1 is a hydrogen atom or a methyl group,
X is an oxygen atom or an imino group, and
R 2 is a hydrogen atom, a linear or a branched alkyl group with a carbon number of 1 to 8, an alicyclic hydrocarbon group with a carbon number of 6 to 8 which optionally comprises a substituent, or an aryl group which optionally comprises a substituent;
wherein a content of a component derived from the monomer (a1) in 100 wt % of the molding material is from 0.01 to 50 wt %; and
wherein in the case a molding having a thickness of 2 mm is obtained by molding the molding material, a total light transmittance is from 85 to 100% and a haze value is 5% or less.

2. The molding material according to claim 1 , wherein a content of the polymer is 50 wt % or more.

3. A method of molding the molding material according to claim 1 , the method comprising
molding the molding material at a temperature of 280° C. or lower.

4. A molding, obtained by the method according to claim 3 .

5. The molding according to claim 4 , wherein a total light transmittance of the molding at a thickness of 2 mm is from 85 to 100% and a haze value of the molding at a thickness of 2 mm is 5% or lower.

6. The molding material according to claim 1 , wherein the molding material is obtained by a process comprising:
supplying the polymer to an injection molding machine;
fusing and holding for three minutes; and then
injection molding with a mold having a dimension of 10 mm×20 mm×2 mm at a mold temperature of 60° C., to obtain a molding having a yellow index of 10 or less.

7. The molding according to claim 5 , wherein a yellow index of the molding is ten or less.

Assignees

• Nakaya Fuminori
• Noda Tetsuya
• Sakashita Keiichi
• Nogami Hiroyuki
• Asai Takafumi
• Mitsubishi Rayon Co

Inventors

• Nakaya Fuminori
• Noda Tetsuya
• Sakashita Keiichi
• Nogami Hiroyuki
• Asai Takafumi

Classifications

• C08F2/44 Primary

  Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers · CPC title

• C08F220/36

  containing oxygen in addition to the carboxy oxygen {, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate} · CPC title

• C08J2333/24

  Homopolymers or copolymers of amides or imides · CPC title

• C08F220/14 Primary

  Methyl esters {, e.g. methyl (meth)acrylate} · CPC title

• B29C45/00

  Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor (injection blow-moulding B29C49/06) · CPC title