PAC Polyanionic Cellulose

PAC: The "All-Round Polymer Guardian" Beyond Drilling
 

In the vast constellation of industrial chemicals, there exists a material that, like a reclusive hermit, rarely appears in the public eye yet plays an indispensable role in oil drilling, fine chemicals, and even cutting-edge technologies. This material is polyanionic cellulose (PAC).

PAC is a water-soluble anionic polymer derived from natural cellulose through chemical modification. With its exceptional temperature resistance, salt resistance, and degradation resistance, PAC is transforming from a traditional oilfield additive into a true "all-around guardian" in modern industry.

The Wisdom of Molecular Structure: A Performance Revolution Brought About by High Substitution

The core advantage of polyanionic cellulose (PAC) stems from its unique molecular structure design. As an "evolution" of carboxymethyl cellulose (CMC), PAC boasts a higher degree of substitution (DS value typically between 0.85 and 1.4). This means that more hydroxyl groups are replaced by carboxymethyl groups on the cellulose molecular chain. This high-density distribution of anionic groups allows the PAC molecular chain to expand more freely in water, forming a stronger hydration film, thus endowing it with physicochemical properties far exceeding those of ordinary cellulose.

Polyanionic cellulose powder not only inherits the environmentally friendly characteristics of cellulose—non-toxic, odorless, and biodegradable—but also overcomes the instability of natural polymers in harsh environments. It maintains stable performance across a wide pH range of 3-11, and even in deep wells at temperatures approaching 150°C, it can maintain its viscosity characteristics for over 48 hours. This powerful adaptability to extreme environments makes it a "golden key" to solving complex industrial problems.

A Stabilizing Force in the Energy Sector: Guardian of Deep Wells and the Ocean

In oil and gas exploration and development, drilling fluid is hailed as the "blood of drilling," and petroleum-grade PAC is the crucial "red blood cell" within that blood. Especially in offshore drilling, deep well, and brine well operations, conventional treatment agents often prove ineffective in the face of the harsh challenges of high salinity, high temperature, and high pressure. High-purity polyanionic cellulose, with its excellent salt resistance and inhibitory properties, has become the preferred choice for reducing filtration loss and increasing viscosity.

It effectively inhibits the hydration swelling of shale and prevents wellbore collapse, acting like an invisible "bulletproof vest" for the wellbore. Simultaneously, high-purity PAC significantly reduces drilling fluid filtration loss, forming a thin and resilient filter cake that protects oil and gas reservoirs from damage. What's even more commendable is its "high efficiency and low consumption" characteristic—due to its high activity content, the amount of PAC added is typically only 30%-50% of that of ordinary CMC. This not only reduces transportation and storage costs but also reduces downhole solids content and increases mechanical drilling speed. With the advent of fast-dissolving PAC technology, on-site dissolution and dispersion time has been shortened by more than 90%, completely solving the pain points of traditional cellulose products easily forming "fish eyes" and clogging screens, greatly improving the efficiency of drilling operations.
 

Cross-Industry Empowerment: From Building Mortar to Fine Chemicals

Petrochemical polyanionic cellulose (PAC) has applications far beyond the energy sector. In the building materials industry, it's a "water-retention master" for high-performance mortars. In gypsum-based mortars, tile adhesives, or insulation systems, PAC dissolves rapidly and builds viscosity, giving the materials excellent thixotropy and anti-sagging properties. It tightly locks in moisture, preventing cracks in the mortar during drying due to excessive water loss, ensuring full cement hydration, and thus significantly improving bond strength and durability.
 

Why Choose Us

1. Own Factory, Direct Supply from the Source

With our own production base, we control the entire process from raw materials to finished products, eliminating intermediaries and resulting in more competitive prices.

2. Stable Quality, Consistent Batch Quality

Automated production lines ensure rigorous testing for each batch, guaranteeing high consistency in indicators such as viscosity and degree of substitution.

3. Comprehensive Service, Timely Response

We provide full support from sample testing to mass production, with our technical team always ready to respond, ensuring worry-free after-sales service.