JP2007056140A5

JP2007056140A5 -

Info

Publication number: JP2007056140A5
Application number: JP2005243118A
Authority: JP
Filing date: 2005-08-24
Publication date: 2008-09-25

Description

参考例２〜６ゴム質含有グラフト共重合体（Ａ２）〜（Ａ６）の製造
組成比を表１に示す組成に変更し、参考例１のゴム質含有グラフト共重合体（Ａ１）の製造と同様の方法で、ゴム質含有グラフト共重合体（Ａ２）〜（Ａ６）を得た。これらのうち、ゴム質含有グラフト共重合体（Ａ４）〜（Ａ６）は、ゴム質重合体（ａ１）の含有量が本発明の範囲外であり、比較例用のものである。 Reference Examples 2-6 Production of Rubber-Containing Graft Copolymers (A2) to (A6) The composition ratio was changed to the composition shown in Table 1, and production of the rubber-containing graft copolymer (A1) of Reference Example 1 In the same manner, rubber-containing graft copolymers (A2) to (A6) were obtained. Among these, the rubber-containing graft copolymers (A4) to (A6) are used for comparative examples because the content of the rubber-like polymer (a1) is outside the scope of the present invention.

Claims

Graft polymerization of a vinyl monomer mixture (a2) containing an aromatic vinyl monomer (a) in the presence of the rubber polymer (a1) results in 40-80 of the rubber polymer (a1). 20% to 70 parts by weight of a rubbery graft copolymer (A) containing 20% by weight, a styrene-conjugated diene copolymer having a durometer A hardness of 20 to 80 ° and / or a hydrogenated product thereof (B) 30 to 30% A soft thermoplastic resin composition (II), comprising 80 parts by weight.

The soft thermoplastic resin composition (II) according to claim 1, wherein the styrene-conjugated diene copolymer and / or its hydrogenated product (B) is a styrene-isoprene block copolymer and / or its hydrogenated product.

The vinyl monomer mixture (a2) is 10 to 99% by weight of the aromatic vinyl monomer (ii), 1 to 90% by weight of the vinyl cyanide monomer (b), and others copolymerizable therewith. The soft thermoplastic resin composition (II) according to claim 1 or 2 , comprising at least one monomer containing the monomer (c).

The soft thermoplastic resin composition (II) according to any one of claims 1 to 3, wherein the residual amount of the aromatic vinyl monomer is 200 ppm or less.

The soft thermoplastic resin composition (II) according to any one of claims 1 to 4 , comprising 0.5 to 30 parts by weight of the inorganic compound (C).

The soft thermoplastic resin composition (II) according to claim 5, wherein the inorganic compound (C) is at least one selected from titanium oxide, talc, mica and calcium carbonate.

A molded article obtained by heat-sealing the hard thermoplastic styrene resin (I) and the soft thermoplastic resin composition (II) according to any one of claims 1 to 6, wherein the soft thermoplastic resin composition ( II) A molded article in which the ratio of the aromatic vinyl content (co) polymerized in the hard thermoplastic styrenic resin (I) to the aromatic vinyl content in II is more than 0.75 and less than 8.0.