Polyquaternium-7 NEW

Polyquaternium-7 is a synthetic cationic copolymer used primarily in cosmetics and personal care products for its conditioning and antistatic properties. Here's its chemical breakdown:

Key Chemical Characteristics:

Composition:

• Formed by copolymerizing acrylamide (neutral monomer) and diallyldimethylammonium chloride (DADMAC) (cationic monomer).

• General Structure:
  

  Formula: Variable (polymer)

  Repeat Units: (CX3HX5NO)Xx ⋅(CX8HX16NCl)Xy
  
  X$(\mathrm{C}{\phantom{}}_3\mathrm{H}{\phantom{}}_5\mathrm{N}\mathrm{O}){\phantom{}}_{�}\cdot (\mathrm{C}{\phantom{}}_8\mathrm{H}{\phantom{}}_{16}\mathrm{N}\mathrm{C}\mathrm{l}){\phantom{}}_{�}$
  

• Molecular Weight: High (typically 10⁵–10⁶ Da).

  Charge:

• Cationic due to quaternary ammonium groups(N+) from DADMAC.

• Charge density adjustable via monomer ratio.

  Properties:

• Water-soluble viscous liquid or gel.

• Electrostatic binding to negatively charged surfaces (e.g., hair, skin).

• Heat-stable and pH-tolerant (works in acidic to alkaline conditions).

Functions & Applications:

• Hair Conditioner: Reduces static, improves wet/dry combability.

• Skin Care: Enhances moisturizer adhesion and feel.

• Antistatic Agent: In shampoos, body washes.

• Suspension Aid: Stabilizes particles in formulations.

Safety & Regulation:

• Non-irritating (widely used in leave-on/rinse-off products).

• Approved by global regulatory bodies (EU, US, China).

• CAS No.: 26590-05-6

In Short:
Polyquaternium-7 is a water-soluble cationic copolymer of acrylamide and DADMAC. Its positively charged quaternary ammonium groups enable strong binding to keratin (hair/skin), providing conditioning, detangling, and antistatic effects in cosmetics. Safe and versatile, it appears in shampoos, conditioners, and lotions.