STRETCH MATERIAL - KURARAY CO

Title:

STRETCH MATERIAL

Document Type and Number:

WIPO Patent Application WO/2002/098976

Kind Code:

A1

Abstract:

A stretch material characterized by (i) comprising 100 parts by mass of a hydrogenated block copolymer which bears two or more vinyl aromatic polymer blocks (A) and one or more conjugated diene polymer blocks (B) with the content of the component (A) ranging from 10 to 40 % by mass and the degree of hydrogenation of the component (B) being 50 % or above and has a number−average molecular weight of 50,000 to 140,000, 0 to 120 parts by mass of a nonaromatic rubber softener, 0 to 80 parts by mass of polyethylene exhibiting an MFR of 15g&sol 10 min or above at 190 °C under a load of 2.16 kg, and 0 to 40 parts by mass of polystyrene exhibiting an MFR of 5 g&sol 10 min or above at 200 °C under a load of 5.00 kg, (ii) exhibiting a residual strain of 15 % or below after 150 % tension test at 25 °C, (iii) exhibiting a tensile permanent set of 10 % or below 30 minutes after 100 % extension at 25 °C for 120 minutes, (iv) exhibiting a deviation of melt tension of 15 % or below in melt tension test conducted under such temperature conditions as to exhibit an MFR of 5 to 15 g&sol 10 min, and (v) exhibiting a take−up speed at melt fracture of 60 m&sol min or above in melt tension test conducted under such temperature conditions as to exhibit an MFR of 5 to 15 g&sol 10 min.

Inventors:

WADA KOICHI (JP)
JOGO YOSUKE (JP)

Application Number:

PCT/JP2002/005158

Publication Date:

December 12, 2002

Filing Date:

May 28, 2002

Export Citation:

Click for automatic bibliography generation Help

Assignee:

KURARAY CO (JP)
WADA KOICHI (JP)
JOGO YOSUKE (JP)

International Classes:

C08L53/02; C08L91/00; D01F6/46; D04H1/4282; C08L23/04; C08L23/06; C08L23/10; C08L25/04; (IPC1-7): C08L53/02

Foreign References:

JP2001106628A	2001-04-17
JPH1060220A	1998-03-03
JPH0859903A	1996-03-05

Other References: