Description

(n-Pyrrolidonepropyl)Methylsiloxane-Dimethylsiloxane Copolymer is a specialized organosilicon compound engineered by incorporating a pyrrolidone-functional propyl group into a siloxane backbone. This unique structure provides exceptional compatibility with both polar and non-polar systems, making it a versatile performance additive. It is primarily sought after by formulators in the personal care, coatings, and industrial processing sectors to enhance surface activity, modify rheology, and improve substrate wetting.

Application

• Personal Care & Cosmetics: Acts as a substantive conditioning agent and emulsifier in hair care products (shampoos, conditioners) and skin care formulations (creams, lotions) to improve feel and manageability.
• Coatings & Inks: Functions as a flow and leveling agent, wetting agent, and anti-cratering additive to improve the appearance and performance of solvent-based and high-solids coatings, printing inks, and adhesives.
• Industrial Additives: Serves as a compatibilizer and processing aid in polymer blends and composites, and as a defoamer/anti-foam component in various aqueous and non-aqueous systems.
• Textile & Fiber Treatment: Used as a softener, lubricant, and anti-static agent for synthetic fibers and fabrics to enhance processing and final hand feel.
• Agricultural Formulations: Employed as an adjuvant to improve the spreading, adhesion, and penetration of pesticides and herbicides on plant surfaces.

Basic Information

Product Name	(n-Pyrrolidonepropyl)Methylsiloxane-Dimethylsiloxane Copolymer
CAS No.	179005-02-8
Molecular Formula	(C4H7NO)C3H6Si(CH3)O[Si(CH3)2O]nSi(CH3)3 (Copolymer structure)
Molecular Weight	Variable (depends on the ratio of monomer units 'n')
Synonyms	Poly[dimethylsiloxane-co-methyl(3-(1-pyrrolidinonyl)propyl)siloxane]; Silicone pyrrolidone copolymer; Poly(dimethylsiloxane-co-methylpyrrolidonepropylsiloxane); N-Pyrrolidone-functional silicone; Pyrrolidone-modified silicone oil; PVP-silicone copolymer (common industry reference); 2-Pyrrolidinone, 1-[3-[methyl[oxo[3-[1,1,3,3-tetramethyl-1,3-disiloxanediyl]bis[oxy]]bis[propanaminato]](2-)N,O1,O3]propyl]- (complex IUPAC); ABIL® Soft AF 100 (potential trade name example).
EINECS	Contact for details

Quality Control

Our (n-Pyrrolidonepropyl)Methylsiloxane-Dimethylsiloxane Copolymer is manufactured under a strict quality management system. Each batch is analyzed to ensure consistent performance characteristics such as viscosity, refractive index, pyrrolidone content, and silicone backbone composition. Certificates of Analysis (COA) documenting these parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. Under these conditions, the product is stable for at least 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Viscosity @ 25°C	100 - 5000 cSt (Grade dependent)
Refractive Index @ 25°C	1.400 - 1.450
Specific Gravity @ 25°C	0.95 - 1.05
Pyrrolidone Content	5 - 30% (Grade dependent)
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.