摘要:
A polytetrafluoroethylene fine powder excellent in powder flowability which comprises fine particles (the primary particle) having a mean particle diameter of 0.05 to 1 &mgr;m, an apparent density of 0.52 to 0.70 g/ml, a standard specific gravity (SSG) of 2.14 to 2.23, and a secondary mean particle diameter of 100 to 1000 &mgr;m, antidripping agent using the above polytetrafluoroethylene fine powder, flame resistive resin composition containing this powder, and composition for inhibiting dust characteristics containing this powder.
摘要:
Copolymers having copolymerized units of vinylidene fluoride, perfluoro(alkyl vinyl) ether, 2-hydropentafluoropropene, and, optionally, tetrafluoroethylene, exhibit excellent low temperature properties and processability when cured with polyhydroxy compounds or amines.
摘要:
A process for preparing a solution and/or dispersion containing sulphonic (per)fluorinated ionomers having —SO3M functional groups, wherein M is selected from H, Li, Na, K, NR4 (R equal to or different from each other are selected from H, CH3, C2H5), characterized in that it dissolves the above defined ionomers at a temperature comprised between the room temperature and about 150° C., in a monophasic ternary mixture essentially constituted by water, by a C1-C4 alcohol and by a fluoro(poly)oxyalkylene having one hydrogen atom in at least a fluorinated end group; the dispersed polymer particle sizes are in the range 30-100 nm.
摘要翻译:一种制备含有具有-SO 3 M官能团的磺酸(全)氟化离聚物的溶液和/或分散体的方法,其中M选自H,Li,Na,K,NR4(R彼此相同或不同)选自H ,CH 3,C 2 H 5),其特征在于其在室温至约150℃之间的温度下,以基本上由水构成的单相三元混合物,C1-C4醇和氟 在至少氟化端基中具有一个氢原子的(聚)氧化烯; 分散的聚合物粒径在30-100nm的范围内。