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1 Ketenes, notably dimethyl ketene, readily undergo oligomerization and polymerization.
2 AKD (alkyl ketene dimer) emulsions offered good sizing, but rendered very poor ink hold-out.
3 Isopropenyl acetate was synthesized from ketene and acetone by direct esterification using strong acidic cation-exchange resin to substitute H2SO4 as catalyst.
4 Oxo ketene dithioacetals 1 are a kind of versatile intermediates in organic synthesis.
5 The inclusion of polyamide and alkyl ketene dimmer improved the mechanical properties of methylcellulose, especially the wet tensile strength. Testing of biodegradation activity showed that both St.
6 The structure of heterocyclic ketene aminals is peculiar and notable which possesses a large conjugation system in its molecule.
7 The effects of acylating agents, acetic anhydride and ketene on synthesis of linalyl acetate from linalool were studied.
8 The results show that the compound maybe 6-acetoxy-4, 6-dimethyl-2,[www.Sentencedict.com]4-cyclohexadienone or the isomers of cyclic ketene.
9 Depending upon reaction conditions, the product may be a polyketone formed by addition polymerization of the ketene double bond.
10 The synthesis of chloroacetyl chloride by the chlorination of ketene was studied in the article.
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