Durazone 37 a Non-Migratory Antiozonant

(1)

DURAZONE® 37

A NON-M

A NON-MIGRAIGRATORYTORY, H, HIGH IGH PERFORMANCEPERFORMANCE

ANTIOZONANT DESIGNED TO MAINTAIN ORIGINAL ANTIOZONANT DESIGNED TO MAINTAIN ORIGINAL RUBBER PRODUCT APPEARANCE

RUBBER PRODUCT APPEARANCE TOM CROFT

TOM CROFT

TECHNICAL SERVICE MANAGER FOR TIRE AND RUBBER

APPLICATIONS

(2)

DURAZONE®

37

CAS Number CAS Number : 121246-28-4: 121246-28-4 Molecular Weight Molecular Weight: 694: 694 Melting Point Melting Point : 70 : 70 – – 74C (158 74C (158 – – 165F) 165F) Physical Form

Physical Form: Purple flake: Purple flake Specific Gravity

Specific Gravity: 1.05: 1.05 Solubility

Solubility: Insoluble i: Insoluble in watern water, Soluble in hexane,, Soluble in hexane,

benzene, xylene. Slightly soluble in acetone and MEK benzene, xylene. Slightly soluble in acetone and MEK

2,4,6-Tris-(N-1,4-dimethylpentyl-p-phenylenediamino)-1,3,5-triazine

(3)

BENEFITS OF DURAZONE®

IN RUBBER COMPOUNDING

•

• Can be used in colored compounds whereCan be used in colored compounds where

discoloration is a problem discoloration is a problem

•

• Low softening point makes DURAZONE® 37Low softening point makes DURAZONE® 37

usable in single pass mixing

usable in single pass mixing operationoperationss

•

• No harmful effects on shelf life of No harmful effects on shelf life of mixedmixed

compound compound

For

Non-tire

tire

producers:

•

•Protects the original appearance of tires fromProtects the original appearance of tires from

unwanted changes due to surface bloom in unwanted changes due to surface bloom in sidewall and other visible components sidewall and other visible components

•

•Can be combined with Naugard Q for synergisticCan be combined with Naugard Q for synergistic

impact on resistance to oxidation and ozonation impact on resistance to oxidation and ozonation

•

•Equal or improved ozone resistance whenEqual or improved ozone resistance when

compared to 6PPD compared to 6PPD

•

•Can be used in sidewall compounds in contactCan be used in sidewall compounds in contact

with white labeling or striping with no with white labeling or striping with no problematic staining problematic staining

For Tire

producers:

(4)

•

• High Molecular Weight:High Molecular Weight: Will be stable iWill be stable in the rubber matrix. n the rubber matrix. VolatVolatilization is notilization is not

a problem in most rubber compounds. a problem in most rubber compounds.

•

• Non-Discoloring :Non-Discoloring : Can be used in light Can be used in light colored compounds without thecolored compounds without the

problems associated with staining or discoloring of traditional antiozonants. problems associated with staining or discoloring of traditional antiozonants.

•

• Can be Combined with Other AntidegradantsCan be Combined with Other Antidegradants : Can be combined with other: Can be combined with other

antidegradants that offer other unique properties such as NAUGARD® Q or antidegradants that offer other unique properties such as NAUGARD® Q or OCT

OCTAMINE® to givAMINE® to give a protection package to re a protection package to resist oxidation and ozone attack.esist oxidation and ozone attack. These synergistic blends are often very cost

These synergistic blends are often very cost effective means to protect a rubbereffective means to protect a rubber compound.

compound.

•

• No Impact on Rubber Compound Physical PropertiesNo Impact on Rubber Compound Physical Properties : : Has bHas been een used used with awith a

variety of elastomer types (NR, SBR, NBR, CR, BR, etc) with minimal or no variety of elastomer types (NR, SBR, NBR, CR, BR, etc) with minimal or no negative effect on physical properties such as hardness, tensile and elongation. negative effect on physical properties such as hardness, tensile and elongation.

IMPORT

(5)

•

Tire Sidewalls

•

Hose Cover

•

Windshield Wiper

•

Automotive Trim

Automotive T

rim

•

Tire Tread

APPLICA

TIONS FOR DURA

ZONE® 37

•

Athletic Footwear

•

Architectural Seals

•

Sponge Compounds

•

(6)

DURAZONE® 37 HAS LITTLE TO NO

IMPACT ON CURE RATE

Polychloroprene

Polychloroprene GW GW 100 100 100 100 100100 Mg

Mg Oxide Oxide 4 4 4 4 44 Polyethylene

Polyethylene wax wax 3 3 3 3 33 N990 N990 50 50 50 50 5050 Clay Clay 50 50 50 50 5050 ZnO ZnO 5 5 5 5 55 TBTD TBTD 1.5 1.5 1.5 1.5 1.51.5 DOTG DOTG 0.5 0.5 0.5 0.5 0.50.5 OCT OCTAMINE® AMINE® 0 0 2 2 00 DURAZONE® DURAZONE® 37 37 0 0 0 0 22 Rheometer, Rheometer, @ 160@ 16000CC ts1,min ts1,min 1.2 1.2 1.1 1.1 1.21.2 tc90, tc90, min min 7.91 7.91 7.72 7.72 7.877.87 DURAZONE® 37 Impact on Cure Rate

(7)

DURAZONE® 37 PERFORMANCE

0

200

400

600

800

800 1000

1000

1200

C

Co

on

nttrro

oll

O

Oc

ctta

am

miin

ne

e 2

2 p

ph

hrr

D

Du

urra

az

zo

on

ne

e 3

37 7 2

2 p

ph

hr

r

Hrs to

Cracking

Polychlor

Polychloroprene

oprene Compound,

Compound, ASTM

ASTM D1

D1149,

149, Ozone

Ozone

Exposure, 50 pphm, Hours to Cracking

(8)

DURAZONE® 37

SHOWS LITTLE TO NO SURFACE BLOOM

S SMMRR55CCVV 6600 6600 E EPPDDMM 7700 7700 N N666600 4455 4455 Z ZnnOO 33 33 S

StteeaarriiccAAcciidd 11 11 T TBBBBSS 00..99 00..99 S Suullffuurr 11..55 11..55 6 6PPPPDD 22..44 00 D Duurraazzoonnee 3377 00 22..44 Extension Cycling Fatigue Test

Extension Cycling Fatigue Test ASTM D4482

ASTM D4482 Age

Aged 70 hrs @10d 70 hrs @100C,0C, K

KCC ttoo ffaaiilluurree 336688 337788 Appeara

(9)

DURAZONE

®®

₃₇

THE

NON-MIG

RA

TORY

ANTIOZON

ANT

Ozone Agin

Ozone Aging, NR

g, NR / EPDM S

/ EPDM Sidewall Compound,

idewall Compound,

Run 72 hrs Continuously, 50 pphm @ 40C

Left 6PPD (2.4 phr) and Right DURAZONE®37 (2.4 phr)

(10)

NON-STAINING PERFORMANCE OF

DURAZONE® 37

SMR-5CV SMR-5CV 100 100 100100 N-326 N-326 50 50 5050 ZnO ZnO 3 3 33 Stearic

Stearic Acid Acid 1 1 11 Naphthenic

Naphthenic Oil Oil 15 15 1515 TBBS TBBS 0.7 0.7 0.70.7 Sulfur Sulfur 2.2 2.2 2.22.2 DURAZONE® DURAZONE® 37 37 4 4 00 6PPD 6PPD 0 0 44 Aged 2 weeks, 7 Aged 2 weeks, 70000 C C ASTM D573 ASTM D573 % Retention % Retention T

Tensile ensile StrengtStrength h 121 121 111818 Elongation

Elongation 81 81 8383 300%

300% Modulus Modulus 220 220 208208 NR Sidewall Compound for

(11)

NON-STAINING PERFORMANCE OF

DURAZONE® 37

(l) (l) 4.0 4.0 PHR PHR 6PPD 6PPD (r) (r) 4.0 4.0 PHR PHR DURAZONE® DURAZONE® 3737 Ageing Period 30 Days at Room Temperature

(12)

IMPROVING DYNAMIC PROPERTIES WITH

DURAZONE® 37

SBR SBR 1502 1502 50 50 5050 SBR SBR 1778 1778 70 70 7070 N234 N234 55 55 5555 ZnO ZnO 3 3 33 Stearic

Stearic Acid Acid 1 1 11

DURAZONE® DURAZONE® 37 37 1 1 00 6PPD 6PPD 0 0 11 TBS TBS 0.5 0.5 0.50.5 MBS MBS 0.5 0.5 0.50.5 Sulfur Sulfur 1.8 1.8 1.81.8 DURAZONE® 37 v

(13)

DYNAMIC PROPERTIES PERFORMANCE

WITH

DURAZONE®

37

Relationship of tan delta to temperature change Relationship of tan delta to temperature change equal for DURAZONE® 37 and 6PPD.

equal for DURAZONE® 37 and 6PPD. T

Tan delta is an delta is an indicator for an indicator for rolling resistance properties in rolling resistance properties in tire treadtire tread compounds. Lower tan delta would indicate improved rolling

compounds. Lower tan delta would indicate improved rolling resistance. resistance. 6PPD 6PPD Durazone Durazone 3737 Antiozonant, phr Antiozonant, phr 1.0 1.0 1.01.0

Dynamic Properties, Cured 10 min. at 177ºC

Dynamic Properties, Cured 10 min. at 177ºC (350ºF)(350ºF) Extension Cycling Fatigue Test - ASTM D4482

Extension Cycling Fatigue Test - ASTM D4482 Aged 70 hrs at 100ºC (

Aged 70 hrs at 100ºC (212ºF), kc 212ºF), kc 82.8 82.8 107.4107.4 Dynamic Properties

Dynamic Properties Tangent

Tangent Delta Delta at at 4ºC 4ºC (39ºF) (39ºF) 0.184 0.184 0.1790.179 Tangent

Tangent Delta Delta at at 102ºC 102ºC (216ºF) (216ºF) 0.120 0.120 0.1200.120 Dynamic

Dynamic Modulus Modulus (G*) (G*) at at 4ºC 4ºC (39ºF), (39ºF), MPa MPa 8.53 8.53 7.757.75 Dynamic

(14)

WORKER SAFETY CONCERNS

In addition to the

low migration tendencies

of DURAZONE® 37 when fully

incorporated into a rubber compound,

DURAZONE® 37 is quite low for

volatility

in normal rubber processing conditions.

In normal mixing, milling, extrusion,

molding and calendaring operations, there

should be minimal to no worker

exposure

to vaporized DURAZONE® 37.

(15)

Weight loss is less than 0.15% from 100

Weight loss is less than 0.15% from 100_–_– 150 150oo_C_C

THERMAL STABILITY OF

DURAZONE

(16)

No significant Weight Loss for DURAZONE® 37 Until Well Past Processing

Temperatures

THERMAL STABILITY OF

DURAZONE

(17)

DURAZONE® 37

DURAZONE® 37 is capable is capable of providing of providing excellent excellent protectionprotection from ozone degradation for many different elastomers from ozone degradation for many different elastomers

DURAZONE® 37 does not significanatly impact the cure rate DURAZONE® 37 does not significanatly impact the cure rate

DURAZONE® 37 does not discolor or stain in r

DURAZONE® 37 does not discolor or stain in rubber compoundsubber compounds

DURAZON

DURAZONE® 37 does E® 37 does not present a threat to worker safety duenot present a threat to worker safety due to off gassing during processing

to off gassing during processing

Dynamic properties of compounds with DURAZONE® 37 equal Dynamic properties of compounds with DURAZONE® 37 equal

or slightly improved to those using 6PPD or slightly improved to those using 6PPD

CONCLUSIONS

(18)