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I am a member of Royal Avebe and I have a question.

For all questions about agricultural and Royal Avebe membership matters you can send an email to: agro@avebe.com.

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If you are a member of Royal Avebe you can reach the portal at the top of this website or click on this link.

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Please send your request to communication@avebe.com. Include the topic of the article, why you want to question Royal Avebe and where you want to publish it. Our Communication department will check if your request is in line with our policy.

Can I get a guided tour at Royal Avebe?

In exceptional cases we receive groups. This is due to the safety requirements at our locations and the limited availability of colleagues who can supervise groups.

That is why we only receive groups that have an affinity/relationship with Royal Avebe, such as customers, government agencies and students/lecturers of further education (e.g. chemistry/chemistry) who study our processes (starch/protein). Submit your request via email to communication@avebe.com.

What are the financial results of Royal Avebe?

Avebe publishes an integrated annual report each year to inform its stakeholders about its financial results. You can find the latest version here.

What are the purchasing conditions of Royal Avebe?

We have general purchasing conditions at Royal Avebe. You can find them here.

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Please send your question to creditcontrol@avebe.com.

I am a supplier of Royal Avebe and want to change my data.

Please send an email to purchase.support@avebe.com.

Where can I send my invoice?

Please send your invoice to accountspayable@avebe.com. Do not forget to mention your purchase order (PO) number that you received from Royal Avebe. Otherwise we are not able to pay your invoice.

Customer service
Can I get technical specification of my product?

Please send an email to customerservice@avebe.com.

Which certificates does Royal Avebe have?

Royal Avebe has several certificates. Send your question about certificates to customerservice@avebe.com.

Where can I watch the video with gate instructions?

You can watch the gate instructions via this link.

Human Resources
Can I apply for a vacancy or internship?

We are always looking for talent!

You can find our current vacancies at the careers website. Here you can also read everything about the application procedure or company culture. Is your vacancy not listed? Please send an email to: ronald.ipema@avebe.com  and we will see what we can do for you!

Is your question not listed here? Please send your question or request to info@avebe.com or use the contact button on the right.Contact
Starch ethers for construction products
What are starch ethers and how do they work?

Starch is a polysaccharide: basically a sequence of polymer molecules “glued together” by their carbon atoms. Also in these molecules are oxygen atoms, which bind to hydrogen to form one of the simplest structures in organic chemistry, called a hydroxyl group. Ethers are also molecular structures called alkyl or aryl groups, which bind to oxygen atoms in the starch to form a starch ether.

The structure of a starch ether is “hydrophilic”, meaning it attracts and retains water. This is how starch ethers create benefits across a range of industrial products: keeping water in a compound lets manufacturers control how a mixture thickens, emulsifies, and stays stable in a range of conditions.

Which products can benefit from starch ethers?

As organic compounds, starch ethers are found in many business and consumer products, from food to paper to constructional materials. In the building and construction sector, they’re often used in surfacing and adhesion products. These include cementitious dry-mix mortars such as tile adhesive, stucco render, and EIFS, and dry-mix gypsum mortars for smoothing, finishing, and filling.

What benefits do starch ethers bring to construction products?

Starch ethers are flexible and available in a range of formulations suited to many use cases. Dry-mix materials are used all over the world in many different conditions; adding starch ethers to a dry-mix mortar product lets producers control a mixture’s smoothing ability, reducing the tendency of adhesives to sag and slip, make it easier to work with over large or difficult surface areas, and extend open time.

Starch ethers can be added at source in the factory, or added to ready-to-use products on construction sites to improve their performance characteristics. A small dosage into a dry mortar formulation results in a significant performance benefit.

What advantages do starch ethers have over cellulose?

While starch ethers can replace cellulose ethers in some applications, it’s often more advantageous for the two to work together. In short, a starch ether and a cellulose ether have different functions, but they work synergistically together to impart very beneficial improvements to a dry mortar formulation.
The primary function of a cellulose ether is to help retain water in a formulation to support complete of the primary binder (cement or gypsum). A starch ether’s main function is to improve workability, reduce slip and sag, support water retention, reduce stickiness and support with open times. Adding small volumes of starch ethers lets producers control rheology (the “feel” of a product) with high precision – for example, making a mixture more workable and pumpable without making it thicker.
Starch ethers impart a buttery feel that is much appreciated by professionals.

How do starch and cellulose ethers work together?

Both starch and cellulose are organic compounds called polysaccharides, and when turned into ethers their main property is water retention. But since their molecular structures once etherified are different, the compounds have different properties – so mixing the two can give a wider range of advantages, from viscosity to workability, that each compound is less effective for when used alone.

Are starch ethers environmentally friendly?

Starch ethers can come from many sources, but Avebe’s starch ethers are derived from natural starch in potatoes, a renewable crop – so there’s no deforestation or other environmental damage in the production chain. Furthermore, the potatoes used aren’t for human consumption, so there’s no impact on the food supply.

Why do we need different formulations of starch ethers?

Starch ethers are flexible compounds with many applications across the building sector, but each application has its own requirements. A smooth finish is vital for skimcoat plaster, for example, but less so for rough stucco, or coatings that will be covered by further surfacing or tiling. That’s why there are many formulations of starch ethers in use today – because each gives a different combination of advantages for its use case.

Different application and different formulation have different requirements. Thus, Avebe has created a range of products with different degrees of various modifications to cater to the needs of the market. Avebe are the originator of the Starch Ether Typing, where the consistency curve profile varies with dosage.

What is a typical concentration for a starch ether additive?

Starch ethers bring benefits at low concentrations. A: Avebe Starch ethers are highly efficient additives and deliver significant formulation benefits at very low doses. Dosages vary according to the primary binder used, the formulation and the end application. Typical starting dosage is approximately 0.1% of cellulose ether.

Why don’t more products on the market use starch ether additives?

Avebe is at heart a farming collective: a group of agricultural professionals with an interest in finding new applications and use cases for the products it grows. Many sustainable and renewable agricultural products – like potatoes – contain organic compounds that can add value to many industrial products while offering environmental benefits too. We have the knowledge to help you make the right selection and guide you on the usage of starch ethers in your formulations.

What do customers in the building trade say about starch ethers?

Professional opinions about starch ethers are positive and widespread. Tilers value the way they reduce sag or slip; plasterers like the improved workability and open time they add to dry mix mortar; large construction sites gain advantage from easier pumpability that makes projects move faster with less rework. And with starch ether additives for ready-for-use available, building trade professionals can also “dial in” the performance characteristics – such as thickness and smoothness – that are right for their job.

Why is sustainability important in today’s building industry?

Around the world, many jurisdictions (like the EU) are requiring ever-stricter sustainability standards for industrial businesses – with the construction sector among the largest producers of CO2. Starch ethers are helping large organizations control their emissions along the value chain and prove their environmental credentials to shareholders.

Why is sustainability important in today’s building industry?

Around the world, many jurisdictions (like the EU) are requiring ever-stricter sustainability standards for industrial businesses – with the construction sector among the largest producers of CO2. Starch ethers are helping large organizations control their emissions along the value chain and prove their environmental credentials to shareholders.

How can starch ethers contribute to a more sustainable building sector?

As organic products derived from renewable sources, starch ethers are often a greener choice than synthetic ethers (which do not have sustainably source materials) or cellulose ethers (which often contribute to deforestation). Avebe’s starch ethers, derived from potato starch, are both renewable and low-impact with a transparent value chain.

Where can we buy Avebe Starch Ethers?

A network of distributors supports and stock Avebe Starch ethers globally. These distributors are in turn supported by Country Managers and the Technical Team at Avebe. Just write in to us and you will get the help you need in using Avebe’s Starch Ethers.