In organic chemistry, an acetal is a functional group with the connectivity R2C (OR')2. Here, the R groups can be organic fragments (a carbon atom, with arbitrary other atoms attached to that) or hydrogen, while the R' groups must be organic fragments not hydrogen.

缩醛（Acetal）是一类同一碳上连有两个烷氧基和一个氢的有机化合物。 缩醛可由 半缩醛 继续与 醇 反应得到，而半缩醛可以由 醛 和醇反应得到。 缩醛（酮）生成的一般过程：

Acetal (polyoxymethylene or POM) is a high strength, low friction engineering plastic that has excellent wear properties in both wet and dry environments. Acetal is chemically resistant to hydrocarbons, solvents, and neutral chemicals. Easy to machine, acetal makes an outstanding choice for applications that require complex, tight tolerances.

Acetals are geminal-diether derivatives of aldehydes or ketones, formed by reaction with two equivalents (or an excess amount) of an alcohol and elimination of water. Ketone derivatives of this kind were once called ketals, but modern usage has dropped that term.

Feb 3, 2022 · Acetal is a one-of-a-kind plastic that was created to substitute metal in a variety of applications. It’s forms are made from copolymer and homopolymer resins, which give a high ratio of flexibility while also providing outstanding strength, stiffness, and durability. It is known for its low coefficient of friction and excellent bearing properties.

Acetal resin是POM这类树脂的总称，又比如polyolefin是PP PE之类的总称，vinyl resin是乙烯基树脂的总称，polyester是PET PBT之类的总称，等等一大堆。 大多数时候商家给的是统称、俗称或者商品名，方便客户记忆，也便于产品推广。

Jun 29, 2024 · Acetal (聚缩醛)，也称为聚甲醛 (POM)或聚氧亚甲基 (POM)，是一种热塑性工程塑料。 它具有良好的综合性能，包括高强度、高刚性、高耐磨损性、优良的尺寸稳定性和化学稳定性。 Acetal材料具有较低的吸湿性，使其在潮湿环境中也能保持稳定的尺寸和机械性能。 此外，其表面光滑，摩擦系数小，是优良的滑动和耐磨材料。 Acetal材料主要由甲醛或其行生物通过缩聚反应制备而成。 常用的合成方法包括均聚法、共聚法和接枝共聚法等。 在制备过程中，通过控制 …

What is Acetal? “An acetal is an organic molecule where two separate oxygen atoms are single bonded to a central carbon atom.” Two distinct oxygen atoms are singly linked to a central carbon atom in an acetal, which is an organic molecule. R 2 C(OR’) 2 is the general structure of acetals.

May 28, 2010 · Hydrates, hemiacetals and acetals are the products of addition reactions of oxygen-based nucleophiles (water and alcohols) to aldehydes and ketones. A hydrate contains a carbon with two single bonds to OH. An acetal (sometimes called a ketal if originating from a ketone) contains a carbon with two single bonds to OR groups.

acetal，英语单词，主要用作名词，作名词时译为“乙缩醛”。 [1] N 1,1-diethoxyethane; a colourless volatile liquid used as a solvent and in perfumes. Formula: CH3CH (OC2H5)2 乙缩醛 [1] Diisobutyl acetal was synthesized by the condensation of paraldehyde and iso-butyl alcohol. 以三聚乙醛和异丁醇为原料，合成了二异丁基乙缩醛。