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The Powder Series

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What is CARBODILITE?

“Carbodiimide” is a generic name of chemical substance [-N=C=N-].

CARBODILITE is multifunctional polycarbodiimide which contains chains

of carbodiimide group developed by our original technology.

CARBODILITE product line up

Powder type: hydrolysis stabilizer for bioplastics

Waterborne type: crosslinker for waterborne system

N=C=N N=C=N

N=C=N N=C=N Image of

Polycarbodiimide

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CARBODILITE Powder Type

Remarkable improvement of anti-hydrolysis property

Less pyrolysis gas emission and irritating smell during melt molding process

Excellent yellowing resistance

Key Benefits

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Mechanism of hydrolysis control

• Existence of H2O

• Free carboxylic acid （acid catalysis）

⇒ Dehydration with carbodiimide group

⇒ CARBODILITE reacts with carboxyl groups,

suppressing the catalytic promotions.

Also, CARBODILITE introduces cross-linking by the

same reactions to fasten the amputated molecules.

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Hydrolysis of Polylactic Acid

H O C CH O C CH OH

O

CH3

O

CH3

n

CH3

O

CH3

O

CHCOCHCO H + HO

Hydrolysis

Tear of the molecular chain（Molecular weight decline）

Retrograded

Ester binding

Carboxylic acid

PLA (Polylactic acid)

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CARBODILITE powder type

Grades HMV-15CA LA-1

Appearance Pale-green powder White powder

Ave. Diameter ≦1000μm ≦1000μm

Softening point*1

70℃(158F) 55℃(131F)

5% weight loss temperature*1 350℃(662F) 354℃(669F)

Hue : YI*1（Yellow Index） JIS K7103 11 8

NCO%*1 0% 2%

＊1：Standard Value

Physical Properties

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Green/ ECO Demand

Global requirement on chemicals

to protect environment and human safety

Reduce carbon dioxide (CO2) emission

Save oil resources

Reduce environmental load substances

Enforce regulation for toxic substances

Bio plastics (e.g. PLA, PBS)

Recycle plastics

Low VOC waterborne paint and Ink

Halogen free electronic materials

Replacement of safer substances

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Suitable Polymers

• PLA（polylactic acid）

• PBS（polybutylene succinate）

• PET/ Recycled PET

• PBT（polybutylene terephthalate）

• Polyester elastomer

• Polyamide resin

• Starch-based resin

CARBODILITE powder type

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Modifier of resins which contain ester binding

Chassis/ coverings of home electrical appliance

Food container

Decorative plastic board

Agricultural film

Automotive interior parts

Covering material of cable

Connector parts

Toy and Stationery

Application examples

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Important Notes for Molding Process

Disperse carbodiimide uniformly

Choice of additives

Use twin-screw extruder

Must prepare master batch

Choose additives which do NOT

react with carbodiimide group

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Patent

Country Status Patent Number

Japan Patent 4084953

Patent 3776578

Patent 4245333

U.S. Patent 6846860

Patent 5973024

Patent 6107378

Patent 7361701

Germany Patent 60306013（EP-1354917)

Patent 69813395（EP-0890604)

Patent 69835703（EP-1277792)

Patent 60315780（EP-1418201)

U.K. Patent 0890604

Patent 1277792

Patent 1418201

France Patent 0890604

Patent 1277792

South Korea Patent 10-0958855

Patent 10-0480390

Patent 10-0994150

Patent about the bio plastic with carbodiimide compound

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Inventory & Hazardous pictograms

USA Canada EU China Taiwan Korea Australia Japan

TSCADSL

NDSLREACH IECSC － KECI AICS MITI

HMV-15CA ○ × Polymer * ○ ○ ○ × ○

LA-1In

preparation × Polymer * × ○ × × ○

LA-1

Isocyanate monomer < 1.0%

HMV-15CA

Non isocyanate monomer

No label

* All monomer is registered.

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Test Data ①

0

20

40

60

80

100

Time

Str

engt

h re

tent

ion

（％）

Control

LA-1 / 1%

HMV-15CA / 1%

Other company'scarbodiimide / 1%

Resin ： PLA （ 4032D, Nature Works ）Condition : 80℃（176F) × 95%RH

Hygrothermal Resistant Test

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Test Data ②

0

20

40

60

80

100

120

0 12 24 36 48 60 72 96 120 144 168 192

Time (Hour)

Str

engt

h r

ete

ntion（％

）

0

50

100

150

200

250

Acid

val

ue (eq/

ton)

Control (strength) LA-1 (strength) Control (acid value) LA-1 (acid value)

Resin ： PLA （ 4032D , Nature Works）Dose : CARBODILITE LA-1 (1%)

Condition : 80℃（176F) × 95%RH

Hygrothermal Resistant Test

Strength is kept by CARBODILITE addition by supplementing reduction of the initial acid value and

acid occurring over time.

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Test Data ③

0

20000

40000

60000

80000

100000

120000

140000

160000

180000

200000

0 72 96 120 144 168 192

Time (Hour)

Wei

ght-

aver

age

mol

ecul

arw

eigh

t （M

w)

0

20

40

60

80

100

120

140

160

Aci

d va

lue/

Car

bodi

imid

e C

onte

nt×

1000

/Srr

engt

h re

tent

ion

rate

Weight-average molecular weight （Mw) Concentration of Carbodiimide （NCN%×1000）

Acid value（eq/ton) Strength retention （％）

Resin ： PLA （ 4032D , Nature Works）Dose : CARBODILITE LA-1 (1%)

Condition : 80℃（176F) × 95%RH

Hygrothermal Resistant Test

The carbodiimide in resin is used and prevents a molecular weight decline with heat and humidity.

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Test Data ④

0

2

4

6

8

10

12

Control LA-1 / 1%

ＭＦ

Ｒ（g/10m

in)

1 time

5 times

Resin ： PLA （ 4032D, Nature Works ）Extruded repeatedly

Melt Flow Rate Test

Prevent draw down by adding CARBODILITE.

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Test Data ⑤

0

20

40

60

80

100

120

0 500 1000

Radiated Time （Hour）

Str

engt

h re

tent

ion

(％) Control

LA-1/ 1%

HMV-15CA / 1%

Other company's product/ 1%

Resin ： PLA （ 4032D, Nature Works ）Condition : Xenon, B.P.T. 63℃(145F), 50%RH, 100W/m2

Weatherability Test

CARBODILITE is aliphatic carbodiimide, and it is superior to other companies

product (aromatic carbodiimide) in weatherability.

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Test Data ⑥

0

5

10

15

20

25

30

35

LA-1 HMV-15CA Other company'sproduct

ＹＩ

Hue of product

CARBODILITE’s YI (Yellow Index) is lower than other company’s product.

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Test Data ⑦-1

Comparison of out gas volume

0

1

2

3

4

5

200 220 240 260 280

Temp（℃）

We

igh

t re

du

ctio

n（

%）

HMV-15CA

LA-1

Other company's product

Measuring method : TG-DTA

Retention time : 20min.

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Test Data ⑦-2

About the ingredient of the emitted gas

(CARBODILITE HMV-15CA)

Measuring method : GC-MS

Heating condition : 220℃

OH

N C N

N,N’-Dicyclohexylcarbodiimide(DCC)

CAS#538-75-0

2,6-Di-tert-butyl-p-cresol

（BHT）CAS#128-37-0

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Test Data ⑦-3

2,6-Diisopropylphenyl isocyanate

CAS No. 28178-42-9

NC

O Complex

Measuring method : GC-MS

Heating condition : 220℃

About the ingredient of the emitted gas

(Other company’s product)

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Test Data ⑧

Resin ： PBS （ GS-Pla AZ-91T, Mitsubishi Chemical Co.）Condition : 80℃（176F) × 95%RH

Hygrothermal Resistant Test to PBS resin (Tensile strength)

0

1

2

3

4

5

6

7

0 50 100 150 200 250 300 350

Time（Hours)

Tensi

le s

trengt

h (

kgf/

cm

2)

Control

LA-1 1%

HMV-8CA 1%

Other company'sproduct 1%

＊HMV-8CA is previous version of HMV-15CA. HMV-15CA has superior performance than HMV-8CA.

Because CARBODILITE is crosslinking with carboxyl group included in PBS resin and becomes high-molecular-weight , initial tensile strength growth.

In addition, hydrolysis resistant improve by initial acid value is reduced, and becoming high-molecular-weight.

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Test Data ⑧-2

Resin ： PBS （ GS-Pla AZ-91T, Mitsubishi Chemical Co.）Condition : 80℃（176F) × 95%RH

Hygrothermal Resistant Test to PBS resin (Tensile elongation)

0

50

100

150

200

250

0 20 40 60 80 100 120 140

Time（Hours）

Tensile e

longati

on （

％）

Control

LA-1 1%

HMV-8CA 1%

Other company'sproduct 1%

＊HMV-8CA is previous version of HMV-15CA. HMV-15CA has superior performance than HMV-8CA.

Because CARBODILITE is crosslinking with carboxyl group included in PBS resin and becomes high-molecular-weight , initial tensile elongation growth.

In addition, hydrolysis resistant improve by initial acid value is reduced, and becoming high-molecular-weight.

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