Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CROSS - COPOLYMER AND MEDICAL SINGLE-LAYER TUBE INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2017/110235
Kind Code:
A1
Abstract:
[Problem] To provide a cross - copolymer excellent in terms of flexibility, tensile property, transparency, and blocking resistance and a medical single-layer tube. [Solution] A cross - copolymer which comprises: 75-95 mass% main chains of an aromatic vinyl/olefin copolymer made up of 8.99-15.99 mol% units of an aromatic vinyl monomer, 84-91 mol% units of an olefin monomer, and 0.01-0.5 mol% units of an aromatic polyene monomer; and 5-25 mass% cross - chains of a polymer made up of units of an aromatic vinyl monomer. When examined in a nitrogen gas stream of 30 mL/min by a DCS method in which the cross - copolymer is cooled to -50ºC, subsequently heated to 180ºC at a heating rate of 10 ºC/min, cooled again to -50ºC, and heated to 180ºC at a heating rate of 10 ºC/min, then the cross - copolymer has a fusion peak top temperature of 60-80ºC and a heat of fusion of 45-75 J/g, the heat of fusion being calculated from the area surrounded by a straight line drawn between the -20ºC and 130ºC points of the DSC curve and by the DSC curve between -20ºC and 130ºC.

Inventors:
KUMAGAI YUSHI (JP)
HASEGAWA MASARU (JP)
NOGUCHI TETSUO (JP)
Application Number:
PCT/JP2016/081525
Publication Date:
June 29, 2017
Filing Date:
October 25, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C08F210/00; A61L29/04; C08F212/02; C08F212/34
Domestic Patent References:
WO2015072466A12015-05-21
WO2015152343A12015-10-08
Foreign References:
JP2001316431A2001-11-13
JP2013144814A2013-07-25
JP2012092197A2012-05-17
JP2006176708A2006-07-06
Attorney, Agent or Firm:
SONODA & KOBAYASHI INTELLECTUAL PROPERTY LAW (JP)
Download PDF: