HIMILAN

Usage detail

Golf ball covers, molded products, films, extrusion coating, automotive moldings, modifiers, etc.

  • Overview
  • Grade Chart
  • Physical properties
  • Usage detail
  • Safety Information

Introduction

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HIMILAN is an ionomer resin manufactured by Dow-Mitsui Polychemicals using technologies from the US-based Dow Chemical Company.

Dow Chemical (DuPont at the time of development) developed the ionomer resin SURLYN, an ethylene-methacrylic acid copolymer cross-linked with metal ions between its molecules, and supplies it to countries around the world.

Dow-Mitsui Polychemicals was also importing and selling SURLYN in Japan, but due to expanding domestic demand, from autumn 1978 the company began manufacturing ionomer resin using the same method as the US-based DuPont (as it was then known), and marketed it under the product name HIMILAN.

* SURLYN is denotes a trademark of the US-based Dow Chemical Company or its affiliates.

Features

  • Is extremely tough, with moderate elasticity and flexibility.
  • Has excellent cold resistance.
  • Features outstanding wear resistance.
  • Has good transparency.
  • Has stable thermal adhesion to metals, etc. because it has carboxylic acid groups.
  • Exhibits excellent oil resistance.
  • Has outstanding stress crack resistance.
  • Has excellent compatibility with pigments and fillers.
  • Is capable of plastic molding similar to polyethylene.

HIMILAN has side chains of carboxylic acid groups in its polyethylene molecular chain, and some of these carboxylic acid groups form a structure of cross-linking between molecular chains by way of metal cations. Many superior properties are created due to these two structural characteristics. Particularly the cross-linking through metal ions differs from general cross-linking through chemical bonds. Specifically, the bonding strength changes with heat, with heating weakening the bonding strength, and cooling strengthening it.

Figure: Comparison of melt flow properties of HIMILAN™ and low density polyethylene with the same MFR values

For example, this figure shows the relationship between temperature and flow properties. As ion crosslinking is weakened by heat, it can be molded in the same way as a regular thermoplastic resin, and due to the existence of cross-links, even when melted it is superior to low density polyethylene in terms of melt strength and melt stretch properties. As ion bonding is further strengthened in its hardened state, its toughness increases.

Table: Comparison of the physical properties of HIMILAN and other materials

Property Test method
ASTM
HIMILAN Reference
Low density
polyethylene (LDPE)
Rigid
PVC
Polypropylene Polycarbonate Nylon
Specific gravity
g/㎥
D-792-60T 0.93 - 0.97 0.91 - 0.93 1.32 - 1.45 0.90 - 0.91 1.20 1.13 - 1.16
Mechanical properties
Break point Tensile strength
MPa
D-412-51T 20 - 35 6.9 - 16 34 - 62 24 - 39 55 - 66 39 - 64
Elongation
%
D-412-51T 300 - 500 100 - 650 2 - 40 250 - 700 60 - 100 25 - 300
Izod impact strength
(notched) J/m
D-256 >830 >830 4.9 - 80 31 - 110 640 - 850 53 - 200
Elmendorf tearing
N/cm
- 78 - 300 240 - 780 39 - 2700 20 - 5900 - -
Bending rigidity
MPa
D-790 70 - 370 120 - 250 2500 - 2800 1000 - 1400 - 520 - 2500
Surface hardness
RockWell
Shore

-
D-785

-
D56 - 68

R25 - 35
D41 - 46

R104 - 115
A70 - 90

R85 - 110
-

M78
-

R103 - 118
-
Thermal properties
VICAT softening point
D-1525 57 - 80 85 - 97 80 - 100 140 - 150 150 -
Loaded heat deformation temperature
℃(at0.45MPa)
D-648 43 - 49 41 - 51 54 - 78 100 - 110 143 127 - 170
Coefficient of expansion
cm/cm/℃✕105
D-696 11 - 13 16 - 18 7.2 - 7.8 10 - 15 3.7 - 7.0 -
Brittle temperature
D-746 -50 - -112 <-76 -29 -23 <-100 -57
Electrical properties
Volume resistivity
Ωcm
D-257 E+16 - E+18 E+17 E+15 >E+16 E+17 E+12 - E+15
Dielectric constant
(60Hz)
D-150 2.3 - 2.5 2.3 3.4 2.3 3.17 4.9 - 10.0
Power factor
(103Hz)
D-150 0.001 - 0.004 <0.0005 0.02 0.0008 0.0009 0.06 - 0.11
Withstand voltage
kV/mm
D-149 35 - 43 21 - 35 48 21 - 29 17 19 - 24
Transparency
Steam
(0.1mm·g/m2·day)
(35℃,95%RH)
- 4 - 8 4 - 6 16 0.24 - 2.8 13 - 15 30
Oxygen
10-16mol·m/m2·S·Pa
D-1434 6.0 - 10 4.0 - 8.0 0.3 12 0.2 - 3.0 0.5
Carbon dioxide
10-16mol·m/m2·S·Pa
D-1434 20 - 40 40 1.0 - - 3.2
Nitrogen gas
10-16mol·m/m2·S·Pa
D-1434 1.3 - 3.4 2.0 - 4.0 - - - -
Chemical resistance
Weak acid D-543 sA R R R R R
Strong acid D-543 sA sA R sA sA A
Weak alkaline D-543 R R R R R R
Strong alkaline D-543 R R R R A R
Hydrocarbon solvent D-543 S S S sS sA R
Ketone alcohol D-543 sS R D R R R

← Swipe →

R: withstands, S: swells, A: affected, sS: swells slightly, sA: affected slightly, D: melts

Note: The displayed data are typical values and cannot be used as standard values.

Grade Chart

Comparison of the physical properties of HIMILAN and other materials

Grade Ion type Item Measurement
method
Density Tensile stress
at break
Tensile breaking
strain
Bending
rigidity
Torsional
rigidity modulus
Durometer D
hardness
Vicat softening
temperature
Melting
point
Brittle
temperature
Optical properties (1 mm thickness) *2 Food hygiene
○: Listed (acquired), ✕: Not listed (not acquired) - : To be confirmed
1) Dow-Mitsui Polychemicals does not test compatibility with food dummy solvents, etc.
2) Even if an item is listed (acquired), as there are various restrictions and other requirements, please make sure to confirm the details with us.
3) Food hygiene information does not necessarily reflect the latest version of each law or regulation (including voluntary standards). Please be sure to confirm the details with us.
Haze Total light transmittance
Measurement
method
JIS K7210
:1999
(190℃, 2.16㎏ load)
JIS K7112
:1999
JIS
K7161-1:2014
K7161-2:2014*1
JIS
K7161-1:2014
K7161-2:2014*1
JIS K7106
:1995
ASTM
D-1043
JIS K7215
:1986*3
JIS K7206
:1999
(DSC) JIS K 7216
:1980
JIS K7136
:2000
JIS K7361-1
:1997
Unit g/10min ㎏/m3 MPa % MPa MPa - % % National Positive
Lists
JCII confirmation
certificate
US
FDA21CPR
European
PIM
1706 Zn 0.9 960 33 300 310 120 68 65 88 -60 以下 2.6 92
1705 Zn 5.0 950 31 400 200 94 63 65 91 -60 以下 5.6 91
1702 Zn 16 950 27 400 170 35 62 63 90 -60 以下 7.4 91
1650 Zn 1.5 950 30 400 250 110 63 74 96 -60 以下 7.8 87
1557 Zn 5.5 950 24 400 260 98 63 72 95 -60 以下 16 88
1554W Zn 1.0 960 32 400 270 140 65 71 95 -60 以下 10 88
1652 Zn 5.5 940 24 500 160 72 58 80 98 -60 以下 27 84
AM7326 Zn 1.1 950 30 400 280 150 62 83 101 -60 以下 17 85
1855 Zn 1.0 960 32 400 92 38 60 56 86 -60 以下 5.7 91
1707 Na 0.9 940 33 300 310 120 67 60 89 -60 以下 3.5 92
1605 Na 2.8 940 35 400 320 120 68 66 92 -60 以下 3.3 92
1555 Na 10 940 23 400 240 84 63 72 95 -60 以下 15 90
1601 Na 1.3 940 31 400 230 80 63 73 97 -60 以下 6.8 91
AM79021 Na 2.8 940 29 400 250 110 63 75 97 -60 以下 10 88
LDPE 0.9 920 17 600 170 48 93 109 -60 以下 96 78
EVA (VA10%) 9.0 930 15 700 72 41 71 96 -60 以下 89 85

← Swipe →

* 1 Tensile test - test piece type and testing speed: JIS K 7161-2 / 1BA / 20

* 2 Conditions for creating a test piece for optical properties (JIS K7151, cooling method: B method)

* 3 Measurement instrument: Asker P-2 sensor descent rate: 10.0 mm / s

· Note: The data above are typical values and cannot be used as standard values.

· As there are large differences between different grades of HIMILAN, please consult with Dow-Mitsui Polychemicals when deciding on which grade to use.

· Only typical grades are listed in this table. Please contact Dow-Mitsui Polychemicals to inquire whether there are any grades other than those listed.

Safety Information

1. Medical applications

Please do not use this product for permanent implantation in the human body or for medical applications involving a state of permanent contact with bodily fluids or human tissue (in this case, permanent means 30 days or more.)

Additionally, please consult with Dow-Mitsui Polychemicals in advance if you wish to use the product for other medical applications, such as for a medical device as defined in the Act on Securing Quality, Efficacy and Safety of Products Including Pharmaceuticals and Medical Devices.

2. Food packaging applications

Please contact Dow-Mitsui Polychemicals regarding the state of inclusion in (conformity to) domestic and overseas laws or regulations regarding food utensils, containers and packaging materials.