摘要:
The invention relates to a process for the preparation of benzyl alcohol by hydrolysis of benzyl chloride with water at elevated temperatures, which avoids any wastewater pollution.
摘要:
A novel process for the preparation of benzyl alcohol by the hydrolysis of benzyl chloride, which operates with from 10 to 70 times the molar quantity of water at temperatures of from 80.degree. to 180.degree. C. and stops the reaction before complete conversion is reached, avoids both the addition of bases and water-soluble organic solvents and also the formation of sodium chloride.
摘要:
A process for the separation of a mixture which contains benzyl chloride, benzyl alcohol, dibenzyl ether and aqueous hydrochloric acid, wherein said mixture is continuously introduced via a side-feed into a distillation column from which aqueous hydrochloric acid and benzyl chloride are continuously taken off as overhead product, benzyl alcohol and dibenzyl ether are continuously taken off as bottom product, thereby the formation of dibenzyl ether is reduced or virtually prevented.
摘要:
A formaldehyde-free binding, impregnating or coating composition comprisesA) a polymer constituted to from 2 to 100% by weight of an ethylenically unsaturated acid or anhydride as comonomer, andB) at least one polyol selected froma triazine of the formula ##STR1## where R.sup.1 to R.sup.3 are each independently of the others a radical X[(C.sub.m H.sub.2m O).sub.n H] or N[(C.sub.m H.sub.2m O).sub.n H].sub.2 where X is NH, O or S, m is from 2 to 5 and n is from 1 to 10,a triazinetrione of the formula ##STR2## where R.sup.4 to R.sup.6 are each independently of the others a radical [(C.sub.m H.sub.2m O).sub.n H] where m is from 2 to 5 and n is from 1 to 10,a benzene or cyclohexyl derivative of the formula ##STR3## where R.sup.7 to R.sup.9 are each independently of the others a radical [X(C.sub.m H.sub.2m O).sub.n H], a radical N[C.sub.m H.sub.2m O).sub.n H].sub.2, a radical [Y(C.sub.m H.sub.2m O).sub.n H] or a radical [(C.sub.m H.sub.2m O).sub.n H] where X is NH, O or S, Y is bivalent C.sub.1 -C.sub.6 -alkyl or acyl, m is from 2 to 5 and n is from 1 to 10, anda compound of the formula ##STR4## where R.sup.10 to R.sup.12 are each independently of the others a linear or branched, aliphatic or aromatic radical which has a total of from 1 to 12 carbon atoms and which may also contain ether groups and carries at least one hydroxyl group, and Z is N, PO.sub.3, BO.sub.3, PO.sub.4 or C--R.sup.13, where R.sup.13 is a linear or branched, substituted or unsubstituted alkyl or aryl radical having up to 10 carbon atoms.
摘要翻译:无甲醛结合,浸渍或涂料组合物包含A)构成2至100重量%的作为共聚单体的烯属不饱和酸或酸酐的聚合物,和B)至少一种选自下式的三嗪的多元醇 >其中R1至R3各自独立地为基团X [(CmH2mO)nH]或N [(CmH2mO)nH] 2,其中X为NH,O或S,m为2至5,n为1 式(10)表示的化合物,其中R 4至R 6各自独立地为基团[(C m H 2 m O)n H],其中m为2至5且n为1至10的三嗪三酮,苯或环己基衍生物 式[X(C m H 2 m O)n H],基团N [C m H 2 m O] n H] 2,基团[Y(C m H 2 m O)n H]或基团[(C m H 2 m O)n H] ,O或S中,Y为二价C 1 -C 6 - 烷基或酰基,m为2至5,n为1至10,并且其中R 10至R 12各自独立地为其中的化合物 直链或支链,脂族或 总共具有1至12个碳原子并且还可以含有醚基并带有至少一个羟基的芳基,Z是N,PO 3,BO 3,PO 4或C-R 13,其中R 13是直链或支链 具有至多10个碳原子的取代或未取代的烷基或芳基。
摘要:
Large parts of apparatus are manufactured from a glass fibre reinforced core (2) enclosed in a thin heat-resistant and corrosion-resistant jacket (9) of PVDF attached thereto.