알킬케텐다이머

알킬케텐다이머 C화학적 특성, 용도, 생산

용도

Alkyl ketene dimer (AKD) was industrialized in 1956 and was only used in special papers requiring heavy sizing. In recent years, cultural paper has been basically changed to AKD neutral sizing, making it more widely used. Applications.

Mode of action

Alkyl ketene dimer (AKD) is a water-insoluble solid with a melting temperature between 40 and 60 °C. It is a widely used neutral-sizing chemical in the papermaking industry, as the compound decreases the rate of aqueous liquid penetration into papers. The compound possesses one unsaturated β-lactone ring and 16–18 carbons of the alkyl groups. Its β-lactone ring can readily react with hydroxyl groups of cellulose to form a β-ketoester bond, enabling its hydrophobic tails to arrange into hydrophobic domains. In the presence of water, however, the reactivity of AKD with water is faster than with hydroxyl groups, generating dialkylketone with no or low internal sizing ability, i.e., the ability of additives to facilitate the water-resistant protection of a paper’s surface. Ordinary sizing with AKD involves a complex series of processes, including emulsification of the waxy AKD material; measures to avoid the agglomeration of the emulsified AKD particles; addition of a stabilized AKD dispersion to the papermaking furnish; interactions with various retention aid chemicals to fix the material onto solid surfaces; and various spreading and curing processes that take place during the drying and cooling of the paper product[1-2].

알킬케텐다이머 준비 용품 및 원자재

원자재

준비 용품

알킬케텐다이머 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Changyi Longchang Bio-Chemical Co., LTD	+8613256193735	info@longchangchemical.com	China	990	58
Hebei Weibang Biotechnology Co., Ltd	+8615531157085	abby@weibangbio.com	China	8810	58
Hebei Mojin Biotechnology Co., Ltd	+86 13288715578 +8613288715578	sales@hbmojin.com	China	12835	58
Hebei Yanxi Chemical Co., Ltd.	+8617531190177	peter@yan-xi.com	China	5857	58
Hebei Chuanghai Biotechnology Co,.LTD	+86-13131129325	sales1@chuanghaibio.com	China	5889	58
Hebei Weibang Biotechnology Co., Ltd	+8617732866630	bess@weibangbio.com	China	18151	58
Hebei Kingfiner Technology Development Co.Ltd	+86-15532196582 +86-15373005021	lisa@kingfinertech.com	China	3010	58
Hebei Zhuanglai Chemical Trading Co.,Ltd	+8613343047651	admin@zlchemi.com	China	3002	58
Hebei Shengyang Water Conservancy Engineering Co., Ltd.	+8615373025980	clara@hbshengyang.com	China	875	58
Shandong Deshang Chemical Co., Ltd.	+86-0531-8875-2665 +8613153039501	info@deshangchem.com	China	662	58

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