Rhodocoat polyisocyanates

for waterborne polyurethane coatings

And waterborne becomes easy!

Coatis
 Rhodocoat: innovative,

As a world leader in specialty chemicals, Rhodia offers a complete range of

aliphatic diisocyanate (ADI) products and services which are continually
enhanced in response to customers’ expectations of performance, cost-
effectiveness, safety and environmental protection.

In line with our commitment towards Sustainable Development, Rhodia has been on the
forefront of waterborne technologies since 1996. Our Rhodocoat product line was
specially designed for waterborne polyurethane formulations to meet the growing need for
easy-to-use and environmentally-friendly coatings. As formulation requirements have
evolved, so has our line of products, which includes several new additions offering easier
mixing and faster drying.

Rhodocoat’s
key benefits:

Rhodia’s Rhodocoat products are based

S
EFIT

on a unique, patented technology providing

exceptional benefits for manufacturers of
KEY BEN

waterborne polyurethane systems:

• EASY MIXING
• FAST DRYING
• ENVIRONMENTALLY-FRIENDLY
• WORLDWIDE REGISTERED
• WIDELY COMPATIBLE

Rhodia’s complete aliphatic isocyanate

offer is presented in a separate brochure: “Sharing your vision”

2 Rhodocoat polyisocyanates
, easy-to-use technology

• EASY MIXING: Pictures 1 and 2: Self-emulsification of Rhodocoat

no high speed mixing equipment is required
Rhodocoat products are self-emulsifying and very easy to
incorporate into waterborne coating formulations. Hand mixing
is sufficient: Rhodocoat grades do not require high-shear or
high-speed special equipment (See pictures 1 and 2).

• FAST DRYING:
better hardness and thus, improved stackability
Coatings based on Rhodocoat X EZ-D 401 show a dust free
time 25% to 60% shorter, resulting in higher efficiency in terms
of application process and less film defects (see graph 1).

Rhodocoat X EZ-D 401 also gives an improved stackability

Graph 1: Drying time (T1)
of the coated panels (contact between coated panels under T1 (hours)

1200 kg/m2 during 16 hours - see picture 3). 7

6
5
4
Picture 3: Wood panels after stackability test
3
2
1
0
Std hydrophilic X EZ-D 401

Reference: with standard With Rhodocoat

hydrophilic hardener X EZ-D 401

• ENVIRONMENTALLY- • WORLDWIDE REGISTERED

FRIENDLY: All the Rhodocoat products are designed to meet global
ultra low-VOC and APEO- regulations and are registered in the following inventories:
free options • EINECS (Europe),
Rhodocoat products are the • TSCA (USA) and DSL (Canada),
environmentally-responsible • ENCS (Japan, MITI agency), ECL (South Korea), AICS (Australia)
choice for high performing, ultra and China.
low VOC and APEO-free coating
formulations. Our products support • WIDE COMPATIBILITY with most polyols
sustainable development and meet the ever-increasing Rhodocoat products are compatible with most waterborne
environmental protection regulations around the world. polyols (acrylics, polyesters, PUDs… etc.), for more options to
formulate primers, clearcoats and pigmented topcoats, while
managing cost.

3
 Rhodocoat: the easy-
Rhodia’s offer for 2K waterborne formulations includes
hydrophilically-modified polyisocyanates, self-emulsifiable into
water:
•Rhodocoat WT 2102,
•new APEO-free Rhodocoat EZ-M grades (EZ-M: “Easy Mixing”),
•new APEO-free Rhodocoat EZ-D (EZ-D: “Easy Drying”).
We also propose the low viscosity, hydrophobic Tolonate grades (LV types), which are especially
recommended with polyester polyols and/or in pigmented coatings.

Furthermore we offer an emulsion of blocked polyisocyanate (Rhodocoat WT 1000) for 1K-stoving coatings.

Product characteristics

Viscosity* NCO* Solids Solvent APEO-free

(mPa.s at 25°C) (%) content* content (1)
(%) (B, %)

Self-emulsifiable polyisocyanates
Rhodocoat WT 2102 4300 19.0 100 - No
NEW ➩ Rhodocoat X EZ-M 501 1350 21.6 100 - Yes
NEW ➩ Rhodocoat X EZ-M 502 3600 18.4 100 - Yes
NEW ➩ Rhodocoat X EZ-D 401 1200 16.0 85 13 Yes

Hydrophobic polyisocyanates
Tolonate HDT-LV 1200 23.0 100 - NA
Tolonate HDT-LV2 600 23.0 100 - NA

Emulsion of blocked polyisocyanate

Rhodocoat WT 1000 3200 9.4** 63 2 No
*: average value **: blocked NCO B: Butyl acetate (1) APEO-free: without any alkyl phenol ethoxylate NA: not applicable

Key properties

Hydrophilicity Hand mixing High Gloss Fast Dry Low viscosity

Low VOC
Rhodocoat WT 2102 ✢✢ ✢ ✢ ✢ ✢
Rhodocoat X EZ-M 501 ✢ ✢ ✢ ✢ ✢✢
Rhodocoat X EZ-M 502 ✢✢✢ ✢✢ ✢✢ ✢✢ ✢
Rhodocoat X EZ-D 401 ✢✢✢ ✢✢✢ ✢✢✢ ✢✢✢ _

Tolonate HDT-LV _ _ _ ✢ ✢
Tolonate HDT-LV2 _ _ ✢ ✢ ✢✢
rating from _: low to ✢✢✢: very high

4 Rhodocoat polyisocyanates
water solutions!
Rhodocoat polyisocyanates are ideal for formulating waterborne high-
performance polyurethane coatings:

• Rhodocoat WT 1000 is a stabilized emulsion of blocked polyisocyanate.

Uses Advantages

• 1K primers for automotive OEM • Easy-to-use into waterborne formulations OEM primer without
Rhodocoat WT 1000
• Can and coil-coatings • High solids, low viscosity
• 1K industrial coatings • Very low organic solvent content
Glass coatings (cosmetic) • Widely compatible with other resins
Containers, metal coatings • Good flexibility, stonechip resistance

OEM primer with

Rhodocoat WT 1000

• Rhodocoat WT 2102, X EZ-M 501, X EZ-M 502 and X EZ-D 401

are hydrophilically modified polyisocyanates, self-emulsifiable into water, used as crosslinkers
of two-pack (2K) formulations, such as:

Wood coatings
(especially for parquet
flooring, decking and
furniture)

Soft-feel coatings
for plastics
(computers, phones, automotive interior coatings)

Metal coatings
for General
Industry

Concrete coatings
(stamped concrete)

Coatings for car

repair, transportation
and agricultural equipment 5
 Formulating
Graph 2: Curing conditions
of 1K formulations
Temperature (°C)
210
200
1K formulations with Rhodocoat WT 1000
190
◆ Rhodocoat WT 1000 is used as a crosslinker of one pack
180 Without catalyst
heat-activated waterborne coatings (as the only crosslinker
170
or in conjunction with amino-resins).
160
150 With catalyst (DBTL) ◆ Typical curing conditions are 20-40 minutes at
140 140-150°C (280-300°F), or shorter curing times at higher
130 temperatures. Tin catalysts can be used to reduce baking
120 temperatures or time (see graph 2).
5 10 15 20 25 30
Stoving time (min)

2K formulations with self-emulsifiable Rhodocoat

◆ NCO/OH ratio: In most cases an NCO/OH ratio between 1.2 ◆ Dispersibility properties: When the solvent used to dilute a
and 1.4 is used. If the ratio is too high, then the pot-life can Rhodocoat grade is properly selected, very small particles and
be reduced and film defects (foams and haze) may occur. If the very narrow distribution are obtained after emulsification in
ratio is too low, it may lead to lower hardness and poorer water (see graph 3).
chemical resistance. In the case of non-hydroxylated PUDs, the
Depending of the type and quantity of solvents used to dilute
quantity of Rhodocoat to be added is empirically determined.
Rhodocoat products, quality of the self-emulsification varies
◆ Blending Rhodocoat with other polyisocyanates: It is (see table 1).
generally recommended to use one grade of Rhodocoat as the
only crosslinker. However, the self-emulsifiable Rhodocoat is
fully compatible with the hydrophobic Tolonate and it is possible
to make blends in order to obtain a wide range of properties.
Low viscosity HDI trimers, Tolonate HDT-LV and Tolonate HDT-LV2
Graph 3: Particle size analysis
are the most widely used grades in conjunction with
Rhodocoat. % in volume
20
◆ Dilutions of Rhodocoat with solvents: Adding organic
co-solvents to Rhodocoat polyisocyanates is usually not 16

necessary, but it can help incorporate the hardener 12

into very low viscous formulations, like clearcoats,
8
and improve optical properties of the film.
Solvents containing –OH groups (alcohols, 4
water, etc) must not be used.
0
0,01 0,1 1 10
size (µm)

6 Rhodocoat polyisocyanates
recommendations

Table 1: Particle diameter after emulsification in water

Rhodocoat / solvent Butyl Shellsol MPA PGDA DIB DMM EEP BGA BGDA NMP
(wgt) acetate A

Rhodocoat WT 2102
80/20 5 5 5 5 5 1 5 5 5 1
70/30 5 1 4 5 4 NM 5 5 5 NM

Rhodocoat X EZ-M 502

90/10 5 5 5 5 5 5 5 5 5 4
70/30 1 1 5 5 1 5 5 5 5 4

Rhoodcoat X EZ-D 401

88/12 5 1 5 5 4 5 5 5 5 5

rating from 5: excellent to 0: not self-emulsifiable – NM: not measured

MPA: Methoxy Propyl Acetate DIB: Di Iso Butyl esters (from Rhodia) EEP: Ethyl 3-EthoxyPropionate BGDA: Butyl Diethylene Glycol Acetate
PGDA: Propylene Glycol DiAcetate DMM: Di Methyl Di Propylene Glycol BGA: Butyl Ethylene Glycol Acetate NMP: N-Methyl Pyrolydone

◆ Influence of solvent used for the dilution on gloss: The Graph 4: Gloss of 2K waterborne clearcoat for
solvent type and quantity used to dilute the Rhodocoat based parquet based on Alberdingk® U 915: comparison
crosslinker will influence the film properties, like gloss (see of crosslinkers based on Rhodocoat X EZ-M 502
graph 4). diluted with 30% of various solvents

◆ Safety instructions:
Gloss at 60°
Formulating Rhodocoat and Tolonate in waterborne systems
100
is not hazardous but requires following a few simple
90
instructions:
80
> never add water to the hardener, but always pour Rhodocoat 70
into the aqueous coating containing the polyol resin, 60
> never keep the ready-to-use coating hermetically sealed once 50
the mixture (polyol + hardener) has been made, 40
> never put the waste into a hermetically sealed collecting 30
tank; use a tank equipped with a safety valve to enable the 20
release of gases, 10
> before any modification of the hardener, previous lab tests 0
need to be run on small quantities. X EZ-M 502 X EZ-M 502 X EZ-M 502 Part A
in MPA in DMM in EEP alone

7
 Rhodia Coatis
Our teams at your service worldwide

EUROPE

Belgium
Tel: (32) (0)2 620 01 07
Fax: (32) (0)2 620 00 93

Germany
Tel: (49) (0)69 299 93 015
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Italy
Tel: (39) 848 35 00 04 NORTH AMERICA
Fax: (39) 848 35 00 06
Cranbury, NJ (USA)
Greece Tel: (888) 776 7337
Tel: (30) 210 68 39 963 Fax: (609) 860 4040
Fax: (30) 210 68 10 710 coatings@us.rhodia.com
To supplement this brochure, our
Rumania Mexico commercial network can provide you
Tel: (40) 21 212 28 74 Tel: (5255) 53 22 48 00 with safety data sheets, technical data
Fax: (40) 21 212 29 18 Fax: (5255) 53 22 48 94 99 98 sheets and any further information you may
require. Please note that detailed specifications
Russia of our products are available on the technical
Tel: (7) 095 926 5706 data sheets.

Photos: PSA Peugeot Citroën Direction de la Communication - PhotoDisc

Fax: (7) 095 926 5707/08 ASIA PACIFIC Various commercial brochures and booklets on
the road transport and handling of our
Turkey India CENTRAL AND products are also available upon request or
Tel: (90) 212 786 61 00 Tel: (91) 22 56637136 SOUTH AMERICA on our web-site.
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Brazil
Singapore Tel: (55) 11 3741 8796
Tel: (65) 6291 1921 Fax: (55) 11 3741 8565
Fax: (65) 6292 1035

For more information

CLICK HERE !
05 PI09 E

www.rhodia-coatis.com
40, rue de la Haie-Coq - 93306 Aubervilliers - France
Coatis

Tel. : (33)1 53 56 50 00 - Fax : (33)1 53 56 51 55

IndustrialCoatings@eu.rhodia.com
www.rhodia-coatis.com WARNING TO USERS
The information contained in this document is
given in good faith by Rhodia and based on
Rhodia current knowledge. It is only an indica-
SIGNATURE GRAPHIQUE: 01 49 29 43 20

tion and is in no way binding particularly as

regards infringement of or prejudice to third par- Tolonate, Rhodocoat, EZ-M and EZ-D are
ties through the use of our products. This infor- registered trademarks of Rhodia, its subsidiaries
mation must on no account be used as a substi- or its affiliates. The other trademarks mentioned
tute for necessary prior tests which alone can in this document are protected trademarks
ensure that a product is suitable for a given use. which are registered by third party companies.

Coatis