company tower banner
Stepan Company Company Logo

MAKON® 17R2

MAKON® 17R2 is a nonionic reverse eo/po block copolymer renowned for its fast-breaking, low-foaming, and defoaming attributes. It finds application across diverse industries, including industrial, institutional, pulp and paper, textiles, paints and coatings, and more. Its usage is relevant in metalworking fluids, defoamers, dispersants, industrial lubricants, plasticizers, pulp and paper processing, rinse aids, and textile processing. As with other products in the makon® range, it is a low-ash product.

Brand: MAKON (47 products)

Chemical Name: Polyalkylene Oxide Block Copolymer

Functions: Defoamer, Surfactant, Surfactant (Nonionic)

Labeling Claims: Kosher

Certifications & Compliance: Kosher

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Features & Benefits

Labeling Claims
HII Features
Biodegradability

Publically available data shows that this type of product to be inherently biodegradable.

Product Benefits
Preservative Free
EO/PO Block Copolymers

EO-PO-EO block copolymers are best used as individual low-foam surfactants when the EO content is lower, such as MAKON L61 and MAKON L101. Figure 3 shows Stepan’s EO/PO block copolymers that generate less than 1 cm of foam. PO-EO-PO reverse block copolymers, such as MAKON 17R2 and MAKON 17R4, are good foam controllers in the presence of other foaming sources. Reverse block copolymers also create a destabilization of foam structure (Figure 4) and can enhance foam break.

Figure 3: Foamability

MAKON® 17R2 - Eo/Po Block Copolymers

Method: Spinning method with Dynamic Foam Analyzer (6,000 rpm, 25 seconds), 0.05 wt% surfactant in deionized water at 25°C.

Applications & Uses

Markets
Applications
Fluids & Lubricants Type
Fluids & Lubricants End Use
Home Care Applications
I&I Cleaning Applications
Industrial Additives End Use
Applications

MAKON 17R2 is a nonionic reverse EO/PO block copolymer that exhibits fast-breaking, low foaming and defoaming properties. MAKON 17R2 can be used in a variety of markets including Industrial, Institutional, Pulp and Paper, Textiles, and Paints and Coatings. Applications for best fit are metalworking fluids, defoaming, dispersants, industrial lubricants, plasticizers, pulp and paper processing, rinse aids, and textile processing. MAKON 17R2 is a low ash product.

Properties

Physical Form
Appearance
Clear liquid
Typical Properties
ValueUnitsTest Method / Conditions
pH (in 2.5% Aqueous)6.5--
Actives Content100%-
Water Contentmax. 0.2%-
HLB6--
Colormax. 80-Apha Scale
Average Molecular Weight2150g/mol-
Hydroxyl Value52mg KOH/g-
Cloud Point (in 10% Aqueous)26°C-
Cloud Point (in 1% Aqueous)35°C-
Pour Point-39°C-
Flash Pointmin. 94°C-
Viscosity (at 25°C (77 °F) / 38°C (100 °F))351 / 169cPs-
Density (at 25°C, 77°F)1.03g/ml-
Density (at 38°C)1.02g/ml-
Surface Tension (in 0.1% Aqueous)43dynes/cm-
Interfacial Tension with Light Mineral Oil (in 0.1% Aqueous)15.1dynes/cm-
Draves Wetting (in 0.1% Aqueous, at 25°C, 77 °F)min. 90sec-
Foam Height (0.1% Aqueous, Initial / 5 min, mm, at 25 °C, 77 °F)0 / 0mm-
Foam Height (0.1% Aqueous, Initial / 5 min, mm, at 25 °C, 77 °F)23 / 2mm-
Foam Height (0.1% Aqueous, Initial / 5 min, mm, at 50 °C, 122 °F)0 / 0mm-
Solubility in Water (at 25 °C, 77 °F)min. 10wt%-

Regulatory & Compliance

Certifications & Compliance
Chemical Inventories
Clearances

The international inventories (country clearances) of MAKON 17R2 can be found in Section 15 of the Safety Data Sheet (SDS). It is the responsibility of the formulator to review the chemical control regulations for each country where the end product is intended to be sold or used.

Packaging & Availability

Packaging Type
Standard Packaging

MAKON 17R2 is available in drums, totes, and bulk quantities.

Storage & Handling

Storage & Handling

Normal safety precautions (i.e., gloves and safety goggles) should be employed when handling MAKON 17R2. Contact with eyes, nose or prolonged contact with skin should be avoided. Wash thoroughly after handling MAKON 17R2. Product temperatures over 122°F (50°C) are not recommended.

Non-Bulk Storage Recommendations

MAKON 17R2 should be stored in closed containers and kept in a cool, dry place away from incompatible materials (see Section 10 of the SDS). If material is frozen, it may be fluidized by warming with a drum heater or in a steam room. Drums should be vented prior to heating to avoid excessive pressure build up.

Bulk Storage Recommendations

MAKON 17R2 should be stored in vessels of 316 stainless steel, but carbon steel is adequate assuming effective moisture exclusion. Elevated storage temperature may be desirable to maintain ease of pumping.