Swapnroop offers Carbomer Copolymer as a pharmaceutical excipient for formulation applications requiring rheology modification, viscosity enhancement, emulsion stabilization, suspension stabilization and controlled gel formation.
Carbomer Copolymers are high-molecular-weight, crosslinked acrylic-acid polymers containing acrylic acid and C10–C30 alkyl acrylate, crosslinked with allyl pentaerythritol. This polymer architecture gives copolymers functional properties that differ from conventional Carbomer Homopolymers.
Carbomer Copolymer is used as a functional pharmaceutical excipient where controlled viscosity, rheology modification and stabilization of liquid or semisolid formulations are required.
Unlike Carbomer Homopolymers, Carbomer Copolymers contain a hydrophobic alkyl-acrylate component. This structure can provide useful emulsification and stabilization characteristics in formulations containing oil phases.
USP maintains Carbomer Copolymer as a recognized pharmaceutical excipient reference standard.
Product Name: Carbomer Copolymer
Category: Pharmaceutical Excipient
Material Type: Crosslinked acrylic-acid/alkyl-acrylate copolymer
CAS Number: Grade-dependent; confirm against the manufacturer's CoA/SDS
Physical Form: White to off-white powder, depending on grade
Excipient Type: Carbomer Copolymer
Lubrizol describes Carbopol Copolymers as polymers of acrylic acid and C10–C30 alkyl acrylate crosslinked with allyl pentaerythritol.
Carbomer Copolymer can be used in suitable pharmaceutical formulations for:
The exact application depends on the specific copolymer grade. For example, Lubrizol identifies its Carbomer Copolymer/Interpolymer products for topical formulation applications and reports their use in emulsions, lotions and other systems.
Carbomer Copolymers can provide:
The presence of C10–C30 alkyl acrylate differentiates Carbomer Copolymers from Carbomer Homopolymers and contributes to their emulsification and stabilization functionality.
Carbomer Copolymer should be evaluated according to the specific grade's applicable pharmacopeial and manufacturer specification.
Depending on the grade, quality-control testing may include:
Important: The numerical specifications of Carbomer Copolymer are grade-specific. For example, Lubrizol's Pemulen TR-1 NF and TR-2 NF are both copolymer products but have different viscosity ranges and oil-phase performance.
Swapnroop provides pharmaceutical excipients for formulation development and manufacturing requirements. Carbomer Copolymer can be positioned for customers seeking a functional polymer for viscosity modification, emulsion stabilization, suspension stabilization and suitable topical or semisolid pharmaceutical applications.
Product grade, specifications, packaging and documentation can be aligned with customer requirements and applicable regulatory standards.
Carbomer Copolymer should be stored in tightly closed original packaging and protected from moisture and contamination.
Storage and handling should follow the applicable manufacturer's specification and Safety Data Sheet. Appropriate precautions should be followed when handling fine polymeric powder.
Depending on customer and regulatory requirements, documentation may include:
Carbomer Copolymer is a versatile pharmaceutical excipient for formulations requiring viscosity modification, rheological control, emulsion stabilization and suspension properties.
Swapnroop supports pharmaceutical customers with specification-focused excipient supply and technical documentation for formulation development and manufacturing requirements.
| Parameter | Specification |
|---|---|
| Appearance | white to off-white crystalline powder |