What's the difference between polycarboxylate superplasticizer 4C and 6C?

The main difference between the 4C and 6C processes of polycarboxylate superplasticizer (PCE) lies in the length of the polyether side chain, as follows: 4-carbon process:The polyether side chain consists of 4 carbon atoms; 6-carbon process: The polyether side chain consists of 6 carbon atoms. Also has the application difference and the cost difference.

The main difference between the 4C and 6C processes of polycarboxylate superplasticizer (PCE) lies in the length of the polyether side chain, as follows:

4-carbon process:The polyether side chain consists of 4 carbon atoms; 6-carbon process: The polyether side chain consists of 6 carbon atoms. Also has the application difference and the cost difference.

4-carbon process, 
Side chain length: The polyether side chain consists of 4 carbon atoms.
Features: Small molecular weight, good water reduction effect.
Dispersibility: Strong dispersibility of cement particles.
Cost: Low.
Application: Suitable for most mortar/concrete projects, especially for occasions with high requirements for water reduction and dispersibility.

6-carbon process,
Side chain length: The polyether side chain consists of 6 carbon atoms.
Features: Large molecular weight, significant water reduction effect.
Dispersibility: Very strong dispersibility of cement particles.
Cost: High.
Application: Suitable for high-performance concrete, such as self-compacting concrete and high-strength concrete.

Summary
4-carbon process: Moderate performance, low price, suitable for most projects.
6-carbon process: Excellent performance, high price, suitable for high-performance concrete.

When choosing a process, it is necessary to consider the specific project requirements and costs.