Singh, N. K.; Srivastava, S. C.; Aggarwal, R. C., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1984, vol. 23, # 8, p. 664 - 667
Singh, N. K.; Srivastava, S. C.; Aggarwal, R. C., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1984, vol. 23, # 8, p. 664 - 667
A process for making the thermoplastic thiourethane-urethane copolymers for use in making optical products comprising forming e.g. a thiourethane prepolymer, preferably by reaction of an aliphatic diisocyanate with a dithiol, and then reacting the prepolymer with a polyurethane-forming monomer which is preferably the combination of a diisocyanate such as methylene bis(phenyl isocyanate) and a polyol such as a diaromatic containing diol such as ethoxylated Bisphenol A or an aliphatic isocyanate reactive monomer such as tricyclodecane dimethanol or 1,4-dimethanol cyclohexane, to form the copolymer product. The polymers have a combination of high refractive index and high Abbe No. The polymers also have high impact strength, high hardness and Tg's above 100°C. It is preferred to make the polymer in an extruder.
Polymer with urethane or thiourethane units for use, in particular, as an adhesion primer for bonding metal to rubber
申请人:COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
公开号:US10150833B2
公开(公告)日:2018-12-11
A polymer has urethane or thiourethane units, which can be used, in particular, as an adhesion primer for the adhesive bonding of metal or glass to rubber. The polymer comprises base units comprising at least a sub-unit of formula X1CO—NH—, in which X1 respectively represents O or S, and additional units comprising at least a secondary alcohol function and a thioether function in the α position relative to the alcohol function. The polymer can be used as an adhesion primer for the adhesive bonding of a substrate, for example glass or metal, to an unsaturated rubber, or as a corrosion-resistant protective coating for a metal substrate. A metal reinforcer, such as wire, cord, film or plate, can be coated with the polymer.
一种具有氨基甲酸乙酯或硫代氨基甲酸乙酯单元的聚合物,尤其可用作金属或玻璃与橡胶粘合剂的粘合底漆。该聚合物包括至少由一个式 X1CO-NH- 子单元(其中 X1 分别代表 O 或 S)组成的基单元,以及至少由一个仲醇官能团和一个硫醚官能团组成的附加单元,硫醚官能团位于与醇官能团相对的 α 位置。该聚合物可用作粘合剂,用于将玻璃或金属等基材与不饱和橡胶粘合,或用作金属基材的抗腐蚀保护涂层。金属加固物,如金属丝、金属线、金属膜或金属板,都可以涂上这种聚合物。
THERMOPLASTIC POLYURETHANE LENSES WITH A SPECIFIED WEIGHT PERCENTAGE OF URETHANE REPEATING UNITS
申请人:ESSILOR INTERNATIONAL
(Compagnie Générale d'Optique)
公开号:EP2155479B1
公开(公告)日:2012-05-16
POLYMÈRE À UNITÉS URÉTHANE OU THIOURÉTHANE UTILISABLE NOTAMMENT COMME PRIMAIRE D'ADHESION POUR LE COLLAGE DE METAL A DU CAOUTCHOUC
申请人:Compagnie Générale des Etablissements Michelin
公开号:EP2989141A1
公开(公告)日:2016-03-02
POLY(THIOKETAL-URETHANE) SCAFFOLDS AND METHODS OF USE