The modified polyvinyl alcohol is characterized in that the structural formula of the modified polyvinyl alcohol is as follows: in the formula, R1, R2 and R3 are alkyl groups, and can be same or different, wherein the sum of hydrogen atoms or carbon atoms of the alkyl groups are 6-10, ...
POLYVINYLALCOHOL-聚乙烯醇 下载积分:1600 内容提示: POLYVINYL ALCOHOL New specifications prepared at the 61st JECFA (2003) and published in FNP 52 Add 11 (2003). An ADI of 50 mg/kg bw was established at 61st JECFA (2003). Vinyl alcohol polymer, PVOH, INS No. 1203 Polyvinyl alcohol is...
POLYVINYLALCOHOLNewspecificationspreparedatthe61stJECFA(2003)andpublishedinFNP52Add11(2003).AnADIof50mg/kgbwwasestablishedat61st ..
(1) Polyvinyl alcohol (PVA) is made from vinyl acetate by polymerization reaction, alcoholysis, is a kind of white, stable, harmless water-soluble polymer, can quickly dissolve in water, forming a stable colloid, water is a good solvent. (2) Polyv...
The invention discloses a polyvinyl alcohol obtained through hydrolysis of a polyvinyl ester that contains silyl group-having monomer units. The polyvinyl alcohol satisfies the following formulae (I) and (II) and the pH of aqueous 4 % solution thereof falls between 4 and 8: wherein P indicates...
It is intended to provide a novel polyvinyl alcohol resin which is excellent in viscosity stability of an aqueous solution, high speed coatability, reactivity with a crosslinking agent and water solubility. The invention relates to the polyvinyl alcohol resin containing a structural unit having as ...
PROBLEM TO BE SOLVED: To provide a new polyvinyl alcohol-based resin excellent in the viscosity stability of its aqueous solution, high-speed coatability, reactivity to crosslinking agent, its film's solubility to water, orientation tendency and bas-barrier tendency. SOLUTION: The new polyvinyl al...
In this study, antibacterial nanocomposite films of polyvinyl alcohol/starch/chitosan (PVA/ST/CS) together with nickel oxide-copper oxide nanoparticles (NiO–CuONPs) are prepared for food packaging. NiO–CuONPs were synthesized by the co-precipitation method, and structural characterization of ...
Poly(vinyl alcohol) (PVA) Poly(ethenol); Poval; PVOH; Vinyl alcohol homopolymer Poly(vinyl alcohol) is a synthetic polymer bearing repeating CH2CH(OH) units, which is generally prepared from post-polymerization reaction of... K Satoh 被引量: 78发表: 0年 Dielectric constant of barium titanate...
PURPOSE:To obtain a resin composition suitable as fiber processing agent, adhesive, coating agent, etc., capable of readily making the composition water resistant by normal-temperature drying, by adding an alkylenediamine to an acetoacetylated polyvinyl alcohol-based resin. CONSTITUTION:An acetoacetylate...