This plasticization causes hairsprayed hair to droop in humid atmospheres.
													
																	N vinyl 2 pyrrolidone nvp. 
									
	
		
	
																	For pharmaceuticals cosmetics and food additives or copolymers used as viscosity improvers in oils and in water borne paints and adhesives. 
																	Soluble in water and a variety of organic solvents. 
																	Bpa 10 ppm n n di sec butyl p phenylenediamine applications. 
																	Poly vinyl acetate pva in contrast is a soft water insoluble nonpolar polymer that resists removal by shampoo. 
															
													
									
	
		
	
																	The base catalyzed reaction with acetylene. 
																	N vinylpyrrolidone nvp is an organic compound consisting of a 5 membered lactam linked to a vinyl group it is a colorless liquid although commercial samples can appear yellowish. 
																	88 12 0 molecular and structural formula c 6 h 9 no characteristics a colorless to slightly yellowish transparent liquid. 
																	N vp is also used as a reactive thinner in uv cured inks and lacquers. 
															
													
									
	
		
	
																	It is produced industrially by vinylation of 2 pyrrolidone i e. 
																	Specification no tests specification 1 purity ge 99 5 2 denstiy g ml 1 03 1 04 3. 
																	Reactive and susceptible to hydrolyzation and polymerization. 
																	The majority of the n vinyl pyrrolidone n vp that is sold within the eu is used in the production of polyvinyl pyrrolidone e g. 
															
													
									
	
		
	
																	Reactive diluent monomer copolymer modifier for industrial and cosmetic use. 
																	C 6 h 9 no. 
																	Poly n vinyl 2 pyrrolidone pvp is a polar brittle water soluble glassy polymer that is readily plasticized by humidity.