聚合物组合物显示出相对低水平的长链支化和相对高的分子量。
The polymer composition shows relatively low-level long chain branching and relatively high-level molecular weight.
在催化剂、链支化剂存在下多元酸和多元醇直接熔融酯化、常压缩聚合成饱和羟基聚酯。
A saturated hydroxy polyester resin has been prepared with polycarboxylic acid and polyol at the presence of catalyst and chain transfer agent by the direct melt esterification process.
一种组合物，包含具有0至0.1的长链支化指数的第一含氟聚合物和具有至少0.2的长链支化指数的第二含氟聚合物。
A composition comprising a first fluoropolymer having a long chain branching index of from 0 to 0.1 and a second fluoropolymer having a long chain branching index of at least 0.2.
超支化聚合物的玻璃化转变温度随支化点间链段刚性的增大而增大。
The glass transition temperature of hyperbranched polymers rises with the increase of the rigidity of chain segments.
高分子链的支化，与另一种共聚物接枝，或共混支化聚合物和线性聚合物是增加其粘度的基本方法，以使其能够发泡。
Branching polymer chains, copolymerizing with another monomer, and blending branched or cross-linked polymers are the basic methods to increase its viscosity so that it can be suitable for foaming.
高分子链的支化，与另一种共聚物接枝，或共混支化聚合物和线性聚合物是增加其粘度的基本方法，以使其能够发泡。
Branching polymer chains, copolymerizing with another monomer, and blending branched or cross-linked polymers are the basic methods to increase its viscosity so that it can be suitable for foaming.
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