| 释义 |
Definition of acetal in English: acetalnoun ˈasɪtalˈasəd(ə)lˈasəˌtal Chemistry An organic compound formed by the condensation of two alcohol molecules with an aldehyde molecule. 〔化〕乙缩醛，乙缩醛二乙醇 Acetals have the general formula R¹CH(OR²)₂, where R¹ and R² are alkyl groups Example sentencesExamples - Because a key ingredient of acetal is formaldehyde, acetal components left in a sealed container for a few weeks will emit a strong formaldehyde odor.
- Among the crystalline polymers are polyethylene, polypropylene, nylon, thermoplastic polyesters, acetal, and polyphenylene sulfide.
- Water, ethanol, volatile organic acids, aldehydes, esters, acetals, and ketones, many of them powerfully aromatic, are among the azeotrope components in wines.
- Its biologically active metabolites include acetal aldehyde which has been linked to ‘hangover ‘symptoms.’
- A polyaryletherketone polymer replaces acetal, titanium, and other traditional materials.
- The researchers have used supercritical CO 2 as medium for the conversion of alcohols to linear and branched ethers, to cyclic ethers, to aryl ethers and to acetals and ketals in good yields and, all-importantly, with high selectivities.
- In addition, the use of specialty primers enables light-cure cyanoacrylates to develop strong bonds to polyolefins and other hard-to-bond plastics, such as fluoropolymers and acetal resins.
- Multiple flow sizes from 1 ¼ 4 to 1 ¼ 2 in. are available in materials such as acetal, polypropylene, polycarbonate, and polysulfone.
- While Delrin is frequently specified, distributors estimate that 80% of the acetals sold today are actually copolymers.
- Experience in distilling aldehydes led us to believe that acetaldehyde would form acetals in the overheads of the low pressure column.
OriginMid 19th century: from acetic acid + al from alcohol. Definition of acetal in US English: acetalnounˈasəd(ə)lˈasəˌtal Chemistry An organic compound formed by the condensation of two alcohol molecules with an aldehyde molecule. 〔化〕乙缩醛，乙缩醛二乙醇 Acetals have the general formula R¹CH(OR²)₂, where R¹ and R² are alkyl groups Example sentencesExamples - While Delrin is frequently specified, distributors estimate that 80% of the acetals sold today are actually copolymers.
- Its biologically active metabolites include acetal aldehyde which has been linked to ‘hangover ‘symptoms.’
- Multiple flow sizes from 1 ¼ 4 to 1 ¼ 2 in. are available in materials such as acetal, polypropylene, polycarbonate, and polysulfone.
- Among the crystalline polymers are polyethylene, polypropylene, nylon, thermoplastic polyesters, acetal, and polyphenylene sulfide.
- Experience in distilling aldehydes led us to believe that acetaldehyde would form acetals in the overheads of the low pressure column.
- A polyaryletherketone polymer replaces acetal, titanium, and other traditional materials.
- Because a key ingredient of acetal is formaldehyde, acetal components left in a sealed container for a few weeks will emit a strong formaldehyde odor.
- Water, ethanol, volatile organic acids, aldehydes, esters, acetals, and ketones, many of them powerfully aromatic, are among the azeotrope components in wines.
- The researchers have used supercritical CO 2 as medium for the conversion of alcohols to linear and branched ethers, to cyclic ethers, to aryl ethers and to acetals and ketals in good yields and, all-importantly, with high selectivities.
- In addition, the use of specialty primers enables light-cure cyanoacrylates to develop strong bonds to polyolefins and other hard-to-bond plastics, such as fluoropolymers and acetal resins.
OriginMid 19th century: from acetic acid + al from alcohol. |