For B2B professionals in the chemical and pharmaceutical sectors, selecting the right excipient is crucial for product integrity and performance. Carbomers, as a class of synthetic polymers, are widely utilized for their rheological properties. Among them, Carbomer 940 and other Carbomer homopolymers are particularly important. Understanding their nuances is key to effective formulation. As a dedicated supplier of these materials, we aim to provide clarity on their distinctions and applications.

Carbomer 940, while often categorized under Carbomer homopolymers, possesses specific characteristics that set it apart. It is a crosslinked homopolymer of acrylic acid, meticulously synthesized. This specific cross-linking, often with allyl ethers of pentaerythritol, imbues Carbomer 940 with a unique set of properties: high viscosity, excellent clarity, low ion resistance, and a short, non-drip rheological profile. These attributes make it exceptionally suited for applications demanding precise thickening and a pleasant, non-greasy feel, such as in high-end skincare serums and clear gels.

Carbomer homopolymers, in general, are polyacrylic acid polymers. They function as effective thickening, suspending, stabilizing, and emulsifying agents. The variations among different homopolymer grades (like Carbomer 934, 941, 971, and indeed 940) lie primarily in their degree of cross-linking, molecular weight, and consequently, their rheological behavior and clarity. For instance, while Carbomer 940 is known for its high viscosity and short flow, other homopolymers might offer longer flow properties or different viscosity profiles. Knowing these differences is vital when you aim to buy Carbomer 940 for a specific performance requirement.

The science behind these polymers involves free radical polymerization, resulting in high molecular weight structures. Upon neutralization with a base (like sodium hydroxide or triethanolamine), these polymers swell dramatically in water, forming gels that significantly increase viscosity. The pH at which this thickening occurs is critical; Carbomer 940 typically requires a pH above 4 to effectively thicken, with optimal performance in the 5.5-7 range, aligning well with personal care product pH levels.

When considering which carbomer to procure, formulators must evaluate their specific needs. If high viscosity, sparkling clarity, and a non-drip consistency are paramount, Carbomer 940 is often the preferred choice. For applications where a longer flow or different texture is desired, other homopolymers might be more suitable. As a responsible Carbomer 940 manufacturer, we emphasize that selecting the correct grade ensures optimal product development and avoids costly reformulation.

In the pharmaceutical industry, Carbomer homopolymers are valued for their versatility as suspending agents, drug release modifiers, and binding agents. Their ability to create stable gels and control the release of active pharmaceutical ingredients (APIs) makes them indispensable. For instance, Carbomer 940's consistent properties are highly valued in pharmaceutical applications requiring precise rheology, making us a reliable supplier of pharmaceutical grade Carbomer 940.

As a leading chemical supplier in China, we understand the importance of providing detailed technical information to our clients. Whether you are developing cutting-edge cosmetics or advanced pharmaceutical products, choosing the right carbomer is a critical step. We are committed to helping you find the perfect solution. If you are looking to purchase Carbomer 940 or any other Carbomer homopolymer, our team is ready to assist you with technical guidance and competitive pricing. We are not just a supplier, but a partner in your product development journey.