亚磷酸

Based on the retrieval and review of the bibliographer, the original process for the preparation of Dimethyl Phosphite in Zhejiang Xinan Chemical co., Ltd was evaluated.

论文在文献阅译和工艺原理分析的基础上，结合浙江新安化工集团股份有限公司原亚磷酸二甲酯生产装置的实际，研究了以甲醇、三氯化磷为原料的无溶剂的连续化生产新工艺。

The effects of larium salt, cerium salt and praseodymium salt on thermal stability of PVC were studied, the synergistic effects of rare earth stabilizers with PDOP,β- diketone and ESO were also investigated by heat aging test, witheness test, conductivity test and TG analysis.

通过热老化测试、白度测试、电导率测试和热重分析，研究了镧、铈、镨盐对PVC热稳定性能的影响，同时考察了辅助热稳定剂亚磷酸酯、β-二酮和环氧大豆油与稀土类稳定剂的协同效应。

The study manirests that 4,6-diaminoresorcinol diphosphate is stable for oxidization after being placed one month.

以次亚磷酸为还原剂对磷酸盐单体进行稳定化的研究表明：稳定后的磷酸盐在室温条件下储藏一个月后，基本不发生氧化。

The addition of sodium hypophosphate must be appropriate , if added much , W and SiC contents in the coatings were decreased , So the addition of sodium hypophosphate must be controlled

次亚磷酸钠的添加量应适中，添加过多会降低镀层中 W 和 SiC 的含量，一般应控制在10~15g/L 之间。

The hardness and wear resistance of the RE-Ni-W-P-SiC composite coating increase with the rise of SiC and sodium tungstate concentrations in the bath respectively , while the hardness and wear resistance of the RE-Ni-W-P-SiC coating decrease with increasing sodium hypophosphate concentration in the bath.

随着镀液中次亚磷酸钠浓度的升高，镀层的硬度和耐磨性均降低。

According to the properties of acrylic acid series polymer of scale inhibition. A kind of amphiprotic tercopolymer of acrylic acid, acrylamide and dimethyldiallylammonium chloride is synthesised, with water as solvent, persulfate and hypophosphate as initiator. Through the tests, the copolymer can show the good scale inhibiting effect and bactericidal action, and become a multifunctional scale inhibition.

本研究根据丙烯酸聚合物阻垢剂的特点，使用过硫酸铵(NH_4_2S_2O_8、次亚磷酸钠(Na_2PO_3)构成的氧化——还原型引发剂，水为溶剂，合成了新型可用于处理工业循环冷却水的丙烯酸—丙烯酰胺—二甲基二烯丙基氯化铵两性型三元共聚物。

Is China's main production phosphite and phosphite product manufacturers.

南通鑫泰化工有限公司，是我国主要生产亚磷酸和亚磷酸盐系列产品的厂家。

Four novel benzothiazole-phosphites were prepared from benzothiazole derivatives. Their structures were confirmed by IR, NMR and elemental analysis.

为了寻找具有更高杀菌活性的化合物，将苯并噻唑衍生物与亚磷酸反应，得到了4个苯并噻唑衍生物的亚磷酸盐，其结构均经IR、NMR及元素分析确证。

Since the syntheses of vanadium phophitesin the presence of piperazinium cation as structural director by Zubieta et al., thegreat interest in the synthesis of new transition metal phosphites has been aroused.

自从 Zubieta 实验小组以哌嗪分子作为结构导向剂合成了第一个亚磷酸钒化合物之后，过渡金属亚磷酸盐化合物的合成引起了人们极大的兴趣。

On the basis of electroplating and immersion plating tin, and through large numbers of experiments, a new process of electroless plating tin in acid chloride bath solutions including SnCl2 2H2O, NaH2PO2 H2O, special complexing agent, additive agent, stabilizing agent and antioxidant, was established.

本文是在电镀锡、浸镀锡工艺配方的基础上，通过大量的试验，确立了一种以氯化亚锡、次亚磷酸钠和特定的络合剂、添加剂、稳定剂，抗氧化剂为基本镀液组成的酸性氯化物化学镀锡体系，成功地在铜上实现了锡的连续自催化沉积，获得了性能优异的半光亮银白色锡镀层。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。