TMAcrylic Rubber Grades
Powder･Pellets

S■What are “ PARAPET ™ ” Acrylic Rubber grades?
They are products made of acrylic core-shell type rubber particles that have impact resistance and ﬂexibility
maintaining transparency and weather resistance, which are the advantages of methacrylic resin.
Kuraray is developing grades with various characteristics by devising the particle designing of the multi-layerstructure.
“ PARAPET™ ” Acrylic Rubber grades are used for molding
Shell(injection molding and extrusion molding for ﬁlm or sheet) and as additives
to thermoplastic resins.
Core (rubber performance): Cross-linked rubber particles
mainly composed of acrylicCore

Graft bonding
Shell (compatible): Acrylic polymer

Image

List of Acrylic Rubber grades
gradeSAGR-FType

Soft grade(A60-A90)(resisting bending whitening andwarm water whitening)(resisting bending whitening andensuring high hardness)

Small

Small

Small

Soft materials, ﬁlms,sealants, and additives

Film (e.g., building materials)

Film (e.g., decorations)

Proﬁle extrusion, calendar molding,and injection molding

Extrusion (T die)Melt extrusion (T die)Rubber particle size of core-shell type

Main application
Main molding method

Film grade

GR-FH
Film grade* Product forms include powder (with a diameter of several hundred micrometers) and pellets.

PowderPellets

1

SA

Overview of “ PARAPET™ ” SA grade
Overview and Features“ PARAPET™ ” SA grade is a unique acrylic resin with
ﬂexibility developed by Kurarayʼs emulsion polymerization
technology.
We succeed in softening acrylic resin without Plasticizers.
The “ PARAPET™ ” SA grade consists of core-shell rubber
particles with the following features:Transparency
Compatibilitywithother resins• Soft material with high transparency• Plasticizer-free• Excellent weather resistance and hydrolysis resistance• Good adhesion and compatibility with other resins• Possible to extrude deformed shapes with complicatedcross-sectional appearances due to its high viscosity• Pellet and powder types available

Moldability“ PARAPET™ ”
SA grade

Weatherability

Variant
coextrusion
High-frequency
welderEnvironmental
safetyPlasticizer
Halogen-free

The grade map
Hardness (Type D)
Hardness (Type A)

D40
A30

A50

D70

A100

SA-CW001(A60)“ PARAPET™ ” SA grade

D50

SA-FW001
SA-NW001(A70)

SA-FR201(A80)

SA-NW201(A90)

Adjustable by adding hard PMMA

Soft PVC (A50-)
TPU(A80-D80)

Other soft resins

TPO(A60-95)
TPS(A30-70)

TPEE(A90-D70)**: Both powder and pellet types are available.
: Only pellet types are available.

* The SA grade has a refractive index matched to polymethyl methacrylate (PMMA). Therefore, hardness adjustment is easy.

2

SA

Application Examples
Characteristics of “ PARAPETTM ” SA grade（mentioned in the parentheses）match to various applications.
Injection moldingPen grip

(Adhesion performance with polarresin and designability)

Smartphone case

Door guard(Transparency and weather resistance)(Transparency and weather resistance)

Proﬁle extrusion
When lit

SAgradeWhen oﬀABS
Joint

Building packing materials(Adhesion performance with polar resin and ease of extrudabilityof complex shapes)

Film

Additive

Film

E.g., elastomer additives(Designability and weatherresistance)(Extrudability, designability, and ﬂexibility)

Flexible LED light covers(Extrudability and transparency)(Aﬃnity with other resins and addition of acrylic features)

Physical Properties
grade

SA-F (Standard)

SA-N (Improvedlow-temperature characteristics)

SA-C (Low hardness)

SA-NP

SA-CP

SA-CW001

Product name

SA-FP

Shape

PowderPelletPelletPowderPelletPelletPowderPelletOpticalproperties

SA-FW001 SA-FR201

SA-NW001 SA-NW201

Total lighttransmittance

ISO13468-1%

90909090

90909090Haze

ISO13468-1%

11122222Hardness

ISO7619-1

A70

A70

A80

A70

A70

A90

A60

A60

Tensile strength

ISO37

MPa

10101412121499（500 mm/min.）

ISO37

%

200200200

200200170240240

Mechanical Tensile stressproperties M100

ISO37MPa

558771144（500 mm/min.）Elongation at breakCompression
permanent strain

ISO815%4545

705050754545

Permanent
elongation

ISO/DIS2285%

121216121220--Abrasion
resistance

ISO9352

mg

5050

9545

45220--(230°C, 98.07N)

ISO1133

g/10min1818

221010274

4Speciﬁc gravity

ISO1183（70℃, 22 hrs.）

Thermalproperties

Otherproperties

MFR

kg/cm3

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

Coeﬃcient oflinear expansion

m/m・℃

2×10-42×10-42×10-42×10-42×10-42×10-42×10-42×10-4Surface intrinsicresistanceΩ1015<1015<1015<1015<1015<1015<1015<1015<* All values in the above table are typical values and not guaranteed values.

* All measurements were taken at 23°
C.

3

Temperature Dependency
The SA grade maintains stable hardness from room temperature to around 80°
C, and it has relatively
excellent heat resistance for a soft resin.

Hardness (Type A)
100

SA-FW001(A70)
SA-NW001(A70)
SA-CW001(A60)

Type A hardness(-)

806040200-50050

100150Temperature (℃)

Dynamic Viscoelastic DataSA-FW001(A70)
SA-NW001(A70)
SA-CW001(A60)

1.0E+01

1.0E+10

Ester-based TPU (A80)
Soft PVC (A65)

1.0E+09

1.0E+00tanδ(-)

E'(Pa)

1.0E+08

1.0E+07

1.0E+06

1.0E-01

1.0E+05

1.0E+04

1.0E-02-100-50050

100150-100

Temperature (℃)-50050100150Temperature (℃)

Measurement method: Tensile mode, sine wave, frequency of 11.0 Hz, heating method (at the heating rate of 3°
C/min.)
Test piece: Pressed piece

SS Curve
SA-NW001(A70)

10SA-NW201(A90)
9SA-CW001(A60)
Ester-based TPU (A80)

8Soft PVC (A65)

Stress(MPa)76543210050

100150200250300350Strain(%)

Test piece: 3 mmt (press molded)
Test speed: 500 mm/min.

4

SA

Capillary Flow Data
“ PARAPET™ ” SA grade is a soft material that maintains high viscosity even in a high-temperature range
and has good deformability for complicated cross-sectional shapes.
Contact Kuraray if you need temperature-speciﬁc data for each product type.
180℃

1.0E+05

SA-FW001(A70)

220℃

1.0E+05

SA-NW001(A70)
SA-CW001(A60)
Ester-based TPU (A80)

Viscosity (Pa·s)

Viscosity (Pa·s)

Soft PVC (A65)

1.0E+04

1.0E+04

1.0E+03

1.0E+03

1.0E+02

1.0E+02

1.0E+01

1.0E+01
1.0E+01

1.0E+02

1.0E+03

1.0E+01

1.0E+04

1.0E+02

1.0E+03

1.0E+04

Shear Rate (1/sec.)

Shear Rate (1/sec.)* No data on soft PVC (A65) at 220°
C is available.

Compatibility with Other Resins (Two-color Moldability)
The SA grade has a high aﬃnity for various polar resins and has good thermal adhesion.
Therefore, it can be combined with multiple resins by two-color molding, insert molding,coextrusion molding, etc.

SA-F

10Peeling strength (9.807 N/25 mm)

SA-N
86420PMMAMSABSAES

PA

Adhesive material

POMPC

PET-G

SA grade
PMMA＋

SA grade＋

PS＋

MS＋ABS＋

AES＋

PET-G＋PC＋

TPU＋

PVC＋

PET

-PA-PE-PP-

5

Weatherability(1) Optical property transition
Soft PVC (A65)90

Ester-based TPU (A70)

200

8070

YI value (-)

Total light transmittance (%)

SA-NW001(A70)250100605040150
1003050

20
100005001000

1500

2000050010001500

2000

Exposure time (hrs.)

Exposure time (hrs.)

Measurement method: ISO 4892-4(Methods of exposure to laboratory light sources Part 4: Open-ﬂame carbon-arc lamps)
Irradiation intensity: 255±10％ W/m2 at 480mm
Black standard temperature: 63℃
Relative humidity (RH): 50%Cycle condition: 120 minutes cycle (Irradiation + Water spray for 18 min. and irradiation for 102 min.)
Test piece: hot press plate (3mmt)

0hr

1000hr1500hr2000hrSA-NW001

Soft PVC

Ester-based TPU(2) Transition of mechanical properties

SA-NW001

SA-CW001

Soft PVC

Ester-based TPU

Item

Test
methodUnit

Hardness

ISO48

Tensile strength

Exposure time [hrs.]
0500

1000

1500

2000-

A70

A71

A72

A76

A76ISO37MPa

1211101010Elongation at break

ISO37%

200160130110110

Tensile stress M100

ISO37MPa

77788Hardness

ISO48

-

A60

A61

A62

A63

A63

Tensile strength

ISO37

MPa

9991010Elongation at break

ISO37%

240

210

180

170

170

Tensile stress M100

ISO37

MPa

45555Hardness

ISO48-

A65

A66

A70

A72

A72

Tensile strength

ISO37MPa

1311111010

Elongation at break

ISO37%

800600550430400

Tensile stress M100

ISO37

MPa

34455Hardness

ISO48-A72

A74

A78

A79

A80

Tensile strength

ISO37MPa

2319777Elongation at break

ISO37%

2,000

1,200

800

650

600

Tensile stress M100

ISO37

MPa

44433Molding Conditions
Temperature (℃)
Proﬁle extrusion molding

Injection molding

150
Cylinder temperature
Die temperature
Cylinder temperature

200

250

150−210180−210180−240* The drying conditions are at 70°
C × 4 to 6 hours (unopened items), and at 70°
C × 10 hours for opened products and unopened productsthat have been stored for a long time.
* Contact your Kuraray representative for detailed molding conditions.

6GR-F

Overview of “ PARAPET™ ” GR-F grade and GR-FH grade
Overview and Features“ PARAPET™ ” GR-F grade and GR-FH grade are
impact-resistant acrylic resins for ﬁlms developed byKuraray s emulsion polymerization technology.
They are core-shell rubber particles with the followingfeatures:• They have high weather resistance peculiar toacrylic resin, transparency, and designability.
• Film molding is possible with core-shell rubberparticles alone.
• Hardness adjustment is easy since the refractive
index is adjusted to polymethyl methacrylate (PMMA).
• Film molding with suppressed stress bleaching andhot water bleaching is possible (*).
• We can provide both pellet and powder types.

Transparency
anddesign
Whitening
resistance“ PARAPET™ ”
GR-F grade

Stretchability
andﬂexibility

GR-FH grade

Weatherability

Moldability* The GR-F grade has good stress whitening resistance and hot water whitening resistance.
* The GR-FH grade is good only for stress whitening.

Application Examples
Characteristics of “ PARAPETTM ” GR-F and GR-FH grade（mentioned in the parentheses）
match to various applications.

Decorative ﬁlm for building materials(Weather resistance, design resistance,and bending whitening resistance)

Decorative ﬁlm for automobiles(Weather resistance, design resistance, bending whitening resistance)

High-brightness reﬂective ﬁlm(Weather resistance, design, and adhesion with polar resin)

7

Physical Properties
Molding Material
Test method

ItemISO No.

JIS No.

Test condition

Unit

Film grade

Film grade

Control (1)*Control (2)**

GR-F

GR-FH

HR-S

GR 00100

Total light transmittance ISO 13468-1

JIS K7361-1

3mmt%91≦

91≦92≦91≦

Haze

ISO 14782

JIS K7136

3mmt

%

≦1.0

≦0.5

≦0.3

≦1.8

Refractive index

ISO 489

JIS K7142

nd-1.49

1.49

1.49

1.49

Tension modulus

ISO 527-2

JIS K7161

1A/1

Mpa

1,200

1,400

3,300

1,700

Charpy impact strength(with notches)

ISO 179

JIS K7111

1eA

KJ/ｍ3

4.5

2.5

1.4

6.5

Deﬂection temperature
under load (with annealing)

ISO 75-2

JIS K7191

1.80MPa℃

6576

101

83

Vicat softening
temperature

ISO 306

JIS K 7206

B50℃

7286

110

90

MFR

ISO 1133

JIS K 7210

1.3

1.42.41.5230℃ 37.3N g/10min* HR-S: “ PARAPET™ ” Optical grade (Heat resistant type)** GR00100: “ PARAPET™ ” Impact resistant grade (General type)

FilmBy adding to Polymethyl methacrylate, you can adjust general physical properties.
The table below compares the physical properties of GR-F grade and GR-FH grade alone, along with the physical properties of those byadding “ PARAPET™ ” HR-S (an optical grade with heat resistance) to each resin.
Membrane formation method: Melt extrusion
Film formation conditions: Cylinder temperature: 230°
C to 270°C; Die temperature: 250°
C to 280°
CThickness: 75 μm

Test method

ItemGR-F
Unit

100wt%80wt%

GR-FH

100wt%80wt%

Control (3)*Controln (4)**(Soft ﬁlm)

(Hard ﬁlm)

ISO No.

JIS No.

Total light transmittanceISO 13468

JIS K 7361-1

%

9292

92

92

92

92

Haze

ISO 13468

JIS K 7136

%

0.3

0.3

0.1

0.1

0.9

0.9

Pencil hardness

ISO 15184

JIS K 5600-5-4

-

<6B

<6B

4B

2B

<6BH

Tension modulus

ISO 527-1

JIS K 7127

MPa

1100

1400

1300

1700

1300

2200

Tensile yield strength

ISO 527-3

JIS K 7127

MPa344141464257

Tensile breaking
strength

ISO 527-3

JIS K 7127

MPa

293537463455

Tensile breaking
elongation

ISO 527-3

JIS K 7127%

231820162112

Tear strength

ISO 6383-1

JIS K 7128-1

N/mm

1.6

1.1

1.2

1.2

1.8

1.3

MIT fold resistance

ISO 5626

JIS P 8115

Times340

200

210130

180

70

HR-S

20wt%20wt%* General PMMA ﬁlm (soft)** General PMMA ﬁlm (hard)

8

GR-F
Whitening ResistanceWarm Water Whitening

The GR-F grade consists of core-shell rubber particles with excellent warm water whitening resistance.
General PMMA ﬁlm

6010050804060(%)(%)

GR-F ﬁlm

Haze

Total light transmittance

4030202010000h

Immersion time

0h4h

Immersion time4h

Test piece: Melt extruded ﬁlm (50 μm)
Measuring method: Immersed in warm water at 95°
C → Air purge → Left at room temperature for 5 minutes → Measured

Stress Whitening (Bending Whitening)

GR-F grade

General PMMA ﬁlm

GR-FH grade

No folding whitening

Bend whitening

No folding whitening

SS Curve

Specimen: Melt extruded ﬁlm (75 μm)
Test speed: 200 mm/min.

50

GR-F

45

Stress (MPa)This graph shows comparison of the Film physicalproperties which made of GR-F or GR-FH only
itself and added 20wt% “ PARAPET™ ” HR-S (anoptical grade with heat resistance) to each resin.

GR-F/HR-S

40

GR-FH

35

GR-FH/HR-S

30252015
10
500

51015

202530Distortion (%)

Capillary Flow Data
If you need temperature-speciﬁc data of each product type, please contact us.
220℃

1.0E+05

GR-F
GR-FH

1.0E+04

Viscosity (Pa·s)

Viscosity (Pa·s)

1.0E+04

1.0E+03

1.0E+02

1.0E+01
1.0E+01

260℃

1.0E+05

1.0E+03

1.0E+02

1.0E+02

1.0E+03

Shear Rate(1/sec.)

1.0E+04

1.0E+01
1.0E+01

1.0E+02

1.0E+03

1.0E+04

Shear Rate(1/sec.)

9

Weatherability
Transition of Optical Characteristics
GR-F(ΔE)

GR-F(YI value)30

30

GR-F(ΔE)
25

20

20

ΔE(-)

YI value (-)

GR-F (YI value)
25

15

15

1010

5

50001000

2000

3000

4000

5000

01000

Exposure time (hrs.)

2000

3000

4000

5000

Exposure time (hrs.)

Measurement method: ISO 4892-2 (xenon)
Irradiation intensity: 60 W/m2 (300-400 nm)
Black standard temperature: 65℃
Relative humidity (RH): 50%
Cycle condition: 120 minutes cycle (Irradiation + Water spray for 18 min. and irradiation for 102 min.)
Test piece: Molten extruded ﬁlm (75 μm) with UV absorber formulation

Film formation condition (melt extrusion)
Temperature (℃)
GR-F grade
GR-FH grade

200Cylinder temperature
Die temperature

250300230℃−270℃
250℃−280℃

10Kuraray Co., Ltd.

Methacrylate Materials Marketing and Sales Department
Methacrylate Division
Chemicals and Resin Sales Department
Tokiwabashi Tower, 2-6-4, Otemachi, Chiyoda-ku, Tokyo 100-0004, Japan
Tel.: +81-3-6701-1532
Email: parapet@kuraray.com

Kuraray Trading Co., Ltd.

Methacrylate Materials Sales Department
Methacrylate Division
Osaka
Umeda Hankyu Building Office Tower 8-1 Kakuda-cho, Kita-ku, Osaka-shi, Osaka 530-8611
Tel.: +81-6-7635-1793
China (Shanghai)
Kuraray Trading (Shanghai) Co., Ltd.
Unit 2106, 2 Grand Gateway, 3 Hongqiao Road, Xu Hui District, Shanghai, 200030, CHINA
Tel：+86-21-6407-9182

Handling Precautions• For details on the safety, handling, and storage of each type of product, refer to the corresponding material safety data sheet (MSDS).
• Check related laws and regulations and take safety measures suitable for the usage and application before use.
• The contents of this catalog are subject to change without notice.
• Contact Kuraray if you are considering using the product for medical or food applications. Never use the productfor implant medical devices or medical applications.
• Consider and adequately set your industrial property rights and conditions of using applications exemplified in this catalog.
• All rights reserved. You are prohibited from duplicating, reproducing (in whole or part), or transmitting this catalog.
* All numerical values and graphs in this catalog are typical examples and are not guaranteed values or data.

https://www.parapet.jp/english/
2021.09(E)