摘要:
Stabilizer mixtures that are capable of enhancing the resistance of polyolefins to degradation as a result of exposure to light and air, particularly at elevated temperatures, are obtained by reacting an .alpha.-olefin with an ester of a mercaptocarboxylic acid and a polyhydric alcohol, forming a reaction product of unknown structure containing thioether groups and carboxylic acid ester groups.
摘要:
The resistance to deterioration of polyvinyl chloride resins when heated and worked is improved by combinations of polyvinyl chloride resin stabilizers and alpha-olefin oligomers obtained by oligomerization of a 1-olefin having from six to about twelve carbon atoms, and having a highly branched chain with alkyl substituents of at least two carbon atoms.
摘要:
A process is provided for the preparation of thin films of cadmium sulfide by deposition of cadmium sulfide formed in the thermal decomposition of an aqueous solution of cadmium ammonia thiocyanate complex, useful particularly in the preparation of thin cadmium sulfide films on electrically-conductive substrates useful in photovoltaic cells, and on thermally-conductive substrates useful in solar energy absorbers, for energy conversion systems.
摘要:
A process is provided for the preparation of thin films of cadmium sulfide by deposition of cadmium sulfide formed in the thermal decomposition of an aqueous solution of cadmium ammonia thiocyanate complex, useful particularly in the preparation of thin cadmium sulfide films on electrically-conductive substrates useful in photovoltaic cells, and on thermally-conductive substrates useful in solar energy absorbers, for energy conversion systems.
摘要:
A polyvinyl chloride resin stabilizer is provided having a high concentration of tin, in the range from about 20 to about 35% by weight, and a high concentration of sulfur, within the range from about 10 to about 25% sulfur, comprising .[.an.]. .Iadd.a di .Iaddend.organotin .Iadd.di .Iaddend.alpha- or beta-mercapto carboxylic acid ester and an organotin sulfide.Polyvinyl chloride resin compositions are also provided containing these stabilizers.