Anisotropic melt-forming polymers containing fumaric acid or substituted fumaric acid
    18.
    发明公开
    Anisotropic melt-forming polymers containing fumaric acid or substituted fumaric acid 失效
    富马酸或富马酸取代含酸的聚合物,其可形成各向异性熔体。

    公开(公告)号:EP0051934A1

    公开(公告)日:1982-05-19

    申请号:EP81304868.3

    申请日:1981-10-19

    摘要: A polyester or polyesteramide capable of forming an anisotropic melt containing residues derived from dicarboxylic acids, dihydric phenols, hydroxyaromatic acids and aminophenols characterised in that at least 10 mole % of the acid residues of the polymer are radicals derived from fumaric acid or a substituted fumaric acid. Preferably at least 10 mole % of the residues other than the residues of fumaric acid or substituted fumaric acid are aromatic ring-substituted residues. The polyester or polyesteramides of the invention are particularly suitable for blending with chlorine-containing polymers at concentrations of up to 25% by weight of the polymer blend to improve the processability of the chlorine-containing polymer. A polyester in which the acid residues are entirely aliphatic is particularly suitable for blending with poly(vinyl chloride).

    Preparation of unsaturated polyesters from dicarboxylic acids, dibromoneopentyl glycol and a catalyst
    19.
    发明公开
    Preparation of unsaturated polyesters from dicarboxylic acids, dibromoneopentyl glycol and a catalyst 失效
    一种用于二羧酸,二溴新戊二醇以及它们的混合物的不饱和聚酯的制备方法。

    公开(公告)号:EP0032189A2

    公开(公告)日:1981-07-22

    申请号:EP80107498.0

    申请日:1980-12-01

    IPC分类号: C08G63/14 C08G63/38 C08G63/68

    摘要: Unsaturated polyesters prepared from an unsaturated dicarboxylic acid, dicyclopentadiene and dibromoneopentyl glycol have lower cost, lower viscosity and other beneficial properties compared to the similar polyesters prepared without the dicyclopentadiene. Improved resin color is obtained by using an aryl sulfonic acid as the esterification catalyst, and upon completion of the reaction, neutralizing the catalyst.

    摘要翻译: 从在不饱和二羧酸,二环戊二烯和二溴新戊二醇制得的不饱和聚酯具有较低的成本,较低的粘度和其他有益的性能与没有二环戊二烯制得的类似的聚酯。 改进树脂颜色是通过使用芳基磺酸作为酯化催化剂得到,反应完成后,中和催化剂。