Ecorr® RNR

Reclaim Natural Rubber
Ecorr® RNR40 B11Ecorr® RNR30 B01
Ecorr® RNR30 B91
Ecorr® RNR20 B52
Ecorr® RNR20 B66

Ecorr®
The explanation of the brand name and parts of the mission

Eco - Economical

together explain the reasons why reclaim is used.

Strong costs benefits can be obtained with Ecorr®RNR
grades. Even with the current low polymer prices. As theEco - Ecologicalbelow recipe comparison demonstrates, there are price as

Rubber Resources strives to recycle rubber waste in orderwell as volume benefits.

to preserve the environment and natural resources forfuture generations. Reclaim replaces virgin material inrr - regular rubberorder to take some of the pressure off our environment.

Waste Rubber is reversed into regular rubber, which hasregained its viscosity, chemical and mechanical properties.

Savings with Ecorr®RNR in Carcass compoundNR
Ecorr®RNR
Euro/USD exchange rate

Prices1.27 Euros
0.65 Euros

1.4 USD
0.72 USD
1.1Carcass compound
Natural rubber
Peptiser
BR
Ecorr®RNR
Carbon black
Low aromatic oil
Stearic acidTMQZnO
MBTSPVIZwavel

A - Phr80120045
62
35
1.0
0.1
3.2

B - Phr
70
1202045
62
35
1.0
0.1
3.2

Total phr and USD
Costs in USD per kg batch
Savings in USD per kg batch

166.25176.25

Tire production per day
Kg batch per day (at an average
weight of 5 kg per carcass)
Saving per day (2x3)
Annually (350 days x 4)

Prices
USD p/kg
1.40
12.10
2.75
0.72
1.19
1.39
1.54
3.47
2.75
5.12
3.03
3.91

Recipe - A
112.00
12.10
55.00
0.00
53.46
8.32
3.08
10.40
13.75
5.12
0.30
12.30

Recipe - B
98.00
12.10
55.00
14.30
53.46
8.32
3.08
10.40
13.75
5.12
0.30
12.30

285.82
1.72

286.12
1.62
-0.10
2,000
100,000-$9,584-$3,354,467

www.rubber-resources.com

Main advantage
The activities of the current company started 59 years ago
at a tyre producer. These roots still exist; nowadays the tyreindustry is the most important application for the Ecorr®
grades. The main advantage is shown below, costs savingsin a tyre application.
Cost savings per kg price and per litre. Calculated withprices of the first quarter of 2015 and substituted up to 20%
in a Truck-Tread compound.

Cost savings
16

Other advantages

14●
12mixing cycles.

10●

Lower calendering, mixing and extrusion temperature.

●

Improved penetration of fabric and cord.

●

Lower swelling and shrinkage during extrusion andcalendering.

8●

Increased track.

●

Improved reversion and ageing performance of natural
rubber compounds (ozone, UV).

6●
4% savings

Lower power consumption resulting from shorter

2

Calculated with:
NR 1.33 euro/kg
RNR 0.60 euro/kg

005101520% polymer substitution
kilo priceliter price* General market prices Q1 - 2015

Lower raw material costs.

The grades and their properties
The grades are REACH compliant and fully compliant with the European legislation.

TYRE INDUSTRYKey Grades

OTHER APPLICATIONS

RNR40
B11

RNR30
B01

RNR30
B91

RNR20
B52

RNR20
B66

Acetone-extract%

ASTM D297-18

13 ± 213 ± 215 ± 216 ± 310 ± 4Ashes%

ASTM D297-18

5±25±28±2

13 ± 318 ± 4

Carbon Black%

ASTM E 1131

26 ± 228 ± 226 ± 224 ± 326 ± 4

Polymer content%

ASTM E 1131

56 ± 353 ± 350 ± 3

46 ± 446 ± 4

Densitykg/m

ASTM D297-15

1110 ± 151130 ± 201140 ± 201190 ± 20< 1350Hardness

Shore AASTM D2240

57 ± 354 ± 353 ± 550 ± 557 ± 5Tensile strength

MPa

ASTM D412>8>66±15±15±1

ASTM D412> 250

240 ± 40> 200> 200> 200

Mooney viscosity

ML(1+4)@100°C ASTM D1646

50 - 70

40 - 65

35 - 65

35 - 65

35 - 65

Heat loss, 100 °C%<1<1<1<1<1Elongation at break %ASTM D1278

Black slabs of 10 kg. (40x60x4 cm).
Each slab is packed in a low melting foil.

Physical appearance

Curingt 90, 150°C

Packaging

Pallets[cm]

120x100x135

Reclaim

100 phr

Net weight

[kg]

1250

ZnO

5 phr

Net weight[pounds]

2755

Stearic acid

2 phr

Sulphur

3 phrPallets[cm]

120x100x110

MBT

0.5 phr

Net weight

[kg]

1000

DPG

0.2 phr

Net weight[pounds]2204

www.rubber-resources.com

The process
The NR-reclaim grades are mechanically and thermally devulcanised,
mainly out of rubber Truck Treadpeelings without adding any devulcanising agents.
Rubber Resources uses a Banbury
mixer in the process; this enables
them to produce a customer-based

The Banbury Mixer

master batch by adding other raw

Applications overview

materials.

The most common applications for each material are indicated in the chart
Approved raw material
Cutting

below. It is very important to distinguish if reclaimed material is to be used asa master batch or as part of a total compound. For each application it is possible
and / or necessary to optimise the total compound recipe.

Separation of metals
Application:

RNR40

RNR30

RNR30

RNR20

RNR20

B11B01

B91B52

B66

TreadsPP

Sidewalls

P

Carcass

P

P

P

BeadP

P

P

Apex

PP

P

P

Bicycle tyres

PP
M/P

M/P

M/P

Granulating (3.5 mm)
Separation of contaminants
Grinding
Separation of metals
Powder
Thermal step
Mechanical step
Straining
Cooling
Packaging
Storage

Passenger and truck tyres:

Solid tyres
Automotive moulded goods

M/P

M/P

M/P

M/P

Mechanical moulded goods

M/P

M/P

M/P

M/P

M

M

Mats (flooring, automotive)

M

M

M

Conveyer belts

PP

P

Hoses

PP

P

P

Shoes

M/P

M/P

M/P

M/P

M = Masterbatch

P = Part of a virgin compound

M/PUsing reclaim in a tread compound
Each virgin compound responds differently when the reclaim is substituted for a portion of the virgin rubber, affecting
physical and processing properties such as vulcanisation behaviour. Over the years, Rubber Resources has developed
different techniques leading to full control of these affects. A brief example using a tyre tread compound is provided inthe chart mentioned below.
VirginCompound+20 phr
B01+PVI-PVI-15 phr CB-10 phr oil

SBR 1500
BR 1220
B01
ISAF N234
Low PCA oil
Stearic acid
Struktol 40 MS
TMQIPPD
Antilux 654
ZnO

802075251322
1.5570202075251322
1.5570202075251322
1.5570202060151322
1.55TBBS
SU-109
PVI

1.5
2.4-

1.5
2.4
-

1.5
2.5
0,5

1.5
2.4-

Mooney ML(1+4)@100°C

71

75

73

71

1168
4’39’’
7’22’’
10’20’’

1469
3’51’’
6’02’’
8’40’’

1369
5’26’’
8’57’’
11’25’’

1271
4’54’’
8’21’’
10’53’’

Rheo @ 160 °C
MLMH
ts2t50t90Modulus (MPa)
100%
200%
300%
400%
500%

Example:Using reclaim in a tread compoundIn the first column, the recipe andpro-perties of a tyre tread compound areindicated. In the second column, theeffect of substituting 10 parts of the SBR

rubber for 20 parts of Ecorr® RNR30B01
reclaim (which contains ± 50% RHC) isindicated. In the last two columns,possible optimisation steps and theireffect on the compound properties aresummarized.

Increase in
Mooney viscosity
The phenomenon of the hardening of
natural rubber during storage is wellknown throughout the rubber industry.
Due to the high proportion of natural
rubber in tyre tread reclaim, the hardening behaviour of reclaim during storage

1.7
2.9
6.9
8.6
11.7

2.3
5.2
9.3
13.3

2.1
4.9
9.0
12.9

2.0
4.6
8.4
12.4

Tensile strength (MPa)Elongation at break (%)

17.4
577

14.7
456

14.8
456

15.5
480

Hardness (° Shore A)
Density (g/cm3)
Din Abrasion (mm3)Tear Delft[N]// [N]

71
1.17
8174
1.18
10674
1.18
82

75
1.1675

6257

60
56

57
56

65
59

is similar to that of natural rubber. Therate of increase depends on storage time
and temperature. It can be calculatedwith the following empirical equation:
M t = M 0 * (1 + a * t 0.55)
M t = Mooney after t days of storage
M 0 = Mooney at the day of production
t= Storage time in days

a= 0.04 for T = 23°C
= 0.15 for T = 50°C

Rubber Resources B.V.
Schoenerweg 36 - 6222 NX Maastricht - P.O. Box 437 - 6200 AK Maastricht - The Netherlands
Phone: +31 (0)43 329 04 44 - Fax: +31 (0)43 329 03 03 - E-mail: info@rubber-resources.com - Website: www.rubber-resources.com
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means
without the prior written permission of Rubber Resources.
No responsibility is assumed by Rubber Resources for any injury and / or damage to persons or property as a matter of products liability,
negligence or otherwise, or from any use or operation of any methods, products, instructions or ideas contained in the material herein.