Regulation of PVC Molecular Weight in the Presence of Chain Transfer Agents

A study of chain transfer agent on acrylic-acid polymer sodium salt

链转移剂对丙烯酸及其钠盐聚合的研究

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The relationship between chain transfer rate constant and temperature was obtained from the experimental data.

运用该模型和实验数据，可以估算链转移速率常数，并得到链转移速率常数与温度关系的阿累尼乌斯方程，求得活化能为116kJ。

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Effect of chain transfer agent on high solid content copolymer emulsion

链转移剂对高固含量共聚物乳液的影响

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The increase of temperature can promote the chain transfer rate constant.

温度升高，链转移速率增大。

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As allyl ester-terminated poly effective weight control methods, polymerization stage in a certain amount of the acyl compounds, to macromolecular chain and the role of client-based, end-blocking activity in order to terminate the chain growth; and also to avoid generation of carboxyl adverse consequences.

作为PAR-E分子量的有效控制方法，是在缩聚阶段加入一定量的单官能团化合物，去与大分子链端基作用，封锁活性端基，以终止链的增长；而且又尽可能避免生成端羧基。

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Research shows that the range of income distribution proportion under the condition of the optimized win-win gets narrowed, and there is a specific set of values that can make the enterprises of the supply chain have the same growth rate of expected income.

研究表明，在优化的双赢条件下，收益分配比例的取值范围缩小了，而且有一组特定的取值可以满足同一条供应链中的所有节点企业的预期收益增长率相同。

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Among them, in terms of growth direction, growth can be divided into longitudinal integrated growth and latitudinal integrated growth from the industry chain perspective; and growth speed refers to the development speed of construction enterprises in certain direction.

其中，成长方向从产业链的角度来说有纵向一体化成长和横向一体化成长之分；成长速度则指建筑企业在某一方向上发展的快慢。

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It has important theoretical significance and practical value to adjust the industrial structure, promote the development of the industrial chain, transform economic growth pattern, and build an innovative country.

这对我国调整产业结构、促进产业链发展、转变经济增长方式、建设创新型国家具有重要的理论意义和实践价值。

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Today the supply chain management uninterrupted growth and perfection, traditional inventory management method distinct emerge the limitation which can not adapt the supply chain management circumstance.

在供应链管理不断发展和完善的今天，传统的库存管理方法已明显暴露出其不适应供应链环境的缺陷。

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China Steel Association, according to rough statistics, iron, steel, wood chain of negative growth.

中国钢铁工业协会，据粗略统计，铁，钢，木负增长链。

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Effect of expression of exogenous PDGF-A chain on growth and transformation of CHO cells

异源PDGF-A链表达对CHO细胞生长和转化的作用

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Based on the mechanism of polymerization reaction, in this paper we give the probabilistic model of general s-elements, provide a random simulation method for chain growth in copolymer-ization reactions and discuss the estimation of kinetic parameters in these reactions.

本文从聚合反应的机理出发，给出了一般的s元共聚反应的概率模型和实现共聚物大分子链增长过程的随机模拟方法，并讨论了动力学参数的估计问题。

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In the short contact reaction of the hydrogenation of CO 2, methanol and ethanol were primary products and formed fast, and the chain growth came from the surface enol species, being independent of the surface CH species;

同时，在短接触的CO2加氢反应中，醇是初级产物，其生成速率较快，链增长方式可用烯醇缩合机理解释，不受表面活泼碳氢物种的影响；

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Chain growth factor in the derived models was no long a constant. Hence the new model is suitable for interpreting non-ideal Anderson-Schulz-Flory ( ASF) distribution on iron based catalyst.

该模型中由于引入烯烃再吸附项链增长几率不再是一个常数，因而更适合于解释铁基催化剂上非理想Anderson-Schulz-Flory产物分布。

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The influences of H_2/ CO ratio of the feed gas and reaction temperature on chain growth probability are also reviewed. The alkene's incorporation into growing chains are probably involved in the product distribution.

综述了H2/CO比，反应温度对链增长几率α的影响以及初级产物烯烃的插入反应对产物分布的影响。

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The reason is that pitch chain growth due to wear and tear, transmission stuck at a discount off stretch.

其原因是链条节距因磨损增长，传动时打折卡住抻断。

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From the experiments before, during and after the chain growth factor, different stages for different joints have different impacts.

从实验前、中、后的环比增长系数来看，不同阶段对不同关节产生不同的影响。

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PERM is a kind of chain growth algorithm.

PERM算法是一种链生长算法。

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The most important factor to affect the property and product composition of MAO is to control the molecular chain growth of MAO.

反应过程中MAO分子链增长的控制是影响MAO产物组成和产品性能的重要环节。

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Kinetics in carbon chain growth elementary reaction on Cu-Co catalyst

铜钴催化剂上碳链增长基元反应动力学的研究

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