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block copolymer: A copolymer that is a block polymer. In the constituent macromolecules of a block copolymer, adjacent blocks are constitutionally different, ...
Film-forming agents are a group of chemicals that leave a pliable, cohesive, and continuous covering over the hair or skin when applied to their surface. This film has strong hydrophilic properties and leaves a smooth feel on skin. Film-forming agents include polyvinylpyrrolidone (PVP), acrylates, acrylamides, and copolymers.
Skin care or skincare is a range of practices that support skin integrity, enhance its appearance, and relieve skin conditions. They can include nutrition, avoidance of excessive sun exposure, and appropriate use of emollients.
A step-growth copolymer such as Nylon 66 can also be considered a strictly alternating copolymer of diamine and diacid residues, but is often described as a homopolymer with the dimeric residue of one amine and one acid as a repeat unit. [40] Periodic copolymers have more than two species of monomer units in a regular sequence. [41]
acidulant; skin peeler cocamide dea: CH 3 (CH 2) n C(=O)N(CH 2 CH 2 OH) 2, where n is from 8 to 18 foaming and/or emulsifying agent cyclohexasiloxane: Dodecamethylcyclohexasiloxane (D6) solvent cyclopentasiloxane (a type of silicone) [citation needed] Decamethylcyclopentasiloxane (D5) solvent cetyl alcohol: CH 3 (CH 2) 15 OH various calcium ...
Polyquaternium-7 is an organic compound in the polyquaternium class of chemicals and used in the personal care industry. It is the copolymer of acrylamide and the quaternary ammonium salt diallyldimethylammonium chloride. [1] Its molecular formula is: (C 8 H 16 ClN) n (C 3 H 5 NO) m. [2]
Copolymer [ edit ] Depending on the ratio of lactide to glycolide used for the polymerization, different forms of PLGA can be obtained: these are usually identified in regard to the molar ratio of the monomers used (e.g. PLGA 75:25 identifies a copolymer whose composition is 75% lactic acid and 25% glycolic acid).
A modacrylic is a synthetic copolymer. Modacrylics are soft, strong, resilient and dimensionally stable. They can be easily dyed, show good press and shape retention, and are quick to dry. They have outstanding resistance to chemicals and solvents, are not attacked by moths or mildew, and are nonallergenic.