Multi-layer cylindrical molded article

Patent metadata

Field	Value
Publication number	US-8967207-B2
Application number	US-201313910555-A
Country	US
Kind code	B2
Filing date	Jun 5, 2013
Priority date	Jan 31, 2008
Publication date	Mar 3, 2015
Grant date	Mar 3, 2015

Abstract

The present invention provides a highly heat-resistant multi-layer molded article having excellent adhesion between layers and which can be inexpensively produced and easily recycled. The multi-layer molded article comprises an innermost layer including a first polyarylene sulfide-derived resin composition having 95% to 91% by mass of a polyarylene sulfide-derived resin and 5% to 9% by mass of an olefinic (olefine-derived) elastomer, and an outer layer disposed on an outer-side of the innermost layer, including a second polyarylene sulfide-derived resin composition having 5 to 35 parts by mass of reinforced fibers and 100 parts by mass of a third polyarylene sulfide-derived resin composition having 95% to 80% by mass of a polyarylene sulfide-derived resin and 5% to 20% by mass of an olefinic elastomer.

First claim

What is claimed is:

1. A multi-layer blow molded article comprising:
an innermost layer including:
a first polyarylene sulfide-derived resin composition having 95% to 91% by mass of a polyarylene sulfide-derived resin and 5% to 9% by mass of an olefinic elastomer; and
an outer layer disposed on an outer-side of the innermost layer, including:
a second polyarylene sulfide-derived resin composition having 5 to 35 parts by mass of reinforced fiber and 100 parts by mass of a third polyarylene sulfide-derived resin composition having 95% to 80% by mass of a polyarylene sulfide-derived resin and 5% to 20% by mass of an olefinic elastomer.

2. The multi-layer blow molded article according to claim 1 , wherein the multi-layer blow molded article is a multi-layer cylindrical molded article.

3. The multi-layer blow molded article according to claim 1 , wherein the melt viscosity of the first polyarylene sulfide-derived resin composition is from 300 Pa·s to 1500 Pa·s.

4. The multi-layer blow molded article according to claim 1 , wherein the melt viscosity of the second polyarylene sulfide-derived resin composition is from 450 Pa·s to 800 Pa·s.

5. The multi-layer blow molded article according to claim 1 , wherein the reinforced fiber is a glass fiber having an average fiber length of no greater than 3 mm.

6. The multi-layer blow molded article according to claim 1 , wherein the multi-layer blow molded article is a three-dimensional blow molded article to be used as an internal combustion engine pipe.

7. The multi-layer blow molded article according to claim 6 , further comprising a mounting part insert-molded simultaneously with molding the three-dimensional blow molded article.

Assignees

• Polyplastics Co

Inventors

• Nezu Shigeru
• Tanikita Masumi

Classifications

• F16L9/133 Primary

  the walls consisting of two layers · CPC title

• Y10T428/31533

  Of polythioether · CPC title

• Y10T428/1393

  Multilayer [continuous layer] · CPC title