Polyquaternium-7 #CAS108464-53-5

Polyquaternium-7 #CAS108464-53-5

Polyquaternium‑7 is a cationic copolymer formed by diallyldimethylammonium chloride and acrylamide. It has positive charges on its molecular chain and excellent cationic adsorption capacity. It is soluble in water, insoluble in oils and non‑polar organic solvents. It maintains stable performance within a wide pH range of 3–10. It will lose its thickening and conditioning functions under strong alkaline or strong oxidizing conditions. It has good compatibility with most anionic, non‑ionic and amphoteric surfactants within a proper dosage range, yet precipitation may occur when mixed with excessive anionic raw materials. It has good thermal stability at normal processing temperatures for cosmetics. Long‑term exposure to high temperature and strong ultraviolet radiation will gradually cause molecular chain degradation and viscosity decline. It should be stored away from strong oxidants and concentrated alkalis.

Application Of Polyquaternium-7

Polyquaternium‑7, a classic cationic conditioning copolymer, is highly versatile for cosmetic, personal care and multiple industrial sectors. In hair care formulations, it can be firmly adsorbed onto the negatively charged hair cuticle surface to build a continuous, flexible lubricating film. This film greatly reduces inter-fiber friction and static charge accumulation, dramatically improving wet combing and dry combing performance, mitigating tangling, knotting and flyaway issues caused by chemical perming, dyeing and heat styling. It delivers lasting softness, silky smooth handfeel and natural luster to damaged hair, without leaving heavy, greasy residue on hair strands. It can be incorporated into various hair products including clear shampoo, anti-dandruff shampoo, hair conditioner, hair mask, leave-in hair serum, hair spray, mousse and other hair styling preparations. For skin cleansing products, it can adsorb on the skin surface to form a moisturizing protective layer, offsetting the degreasing and drying effect brought by surfactants. It alleviates tight, rough and itchy feeling after washing, enhances skin slip and comfort, and is suitable for mild facial cleanser, body wash, baby bath lotion and sensitive-skin cleaning formulas. It will not suppress foam obviously when compounded with anionic surfactants, and helps stabilize the emulsion system, assist suspension of pearlescent agents, exfoliating particles and insoluble functional additives. Beyond cosmetics, it has important industrial applications. In water treatment, it works as a high-efficiency organic flocculant for solid-liquid separation, clarifying industrial wastewater and domestic sewage. In textile industry, it acts as antistatic agent and softener for fabric finishing, reducing static electricity of synthetic fiber fabrics and improving fabric handfeel. In papermaking industry, it serves as retention aid, drainage aid and paper surface softening additive to boost paper forming performance. It can also be used as thickener, dispersant and charge modifier in paint, ink and adhesive systems. It features excellent compatibility with nonionic, amphoteric and appropriate dosage of anionic surfactants, and can be matched with most cosmetic and industrial raw materials to realize diversified functional modification according to formulation requirements.

Fact Factory and Equipment Show