Curable composition and compatibilizing agent
a composition and compatibilizing agent technology, applied in the field of curable composition and compatibilizing agent, can solve the problems of difficult control of acrylic polymerization, difficult to introduce a functional group into such polymers at one or both ends, and difficult to achieve radical polymerization of functional group-terminated vinyl polymers, etc., to achieve good storage stability, high gel fraction, and high elongation characteristic
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synthesis example 1
Synthesis of a Crosslinkable silyl Group-Terminated poly(n-butyl acrylate / stearyl acrylate) copolymer
[0309]A 2-liter flask was charged with 8.39 g (58.5 mmol) of cuprous bromide and 112 mL of acetonitrile, and the contents were heated at 70° C. with stirring under a nitrogen stream for 20 minutes. Thereto were added 17.6 g (48.8 mmol) of diethyl 2,5-dibromoadipate, 996 mL (6.94 mol) of butyl acrylate and 279 g (0.858 mol) stearyl acrylate, and the mixture was further heated at 70° C. for 40 minutes with stirring. Thereto was added 0.41 mL (1.95 mmol) of pentamethyldiethylenetriamine (herein after referred to as “triamine”) to thereby initiate the reaction. Then, heating at 70° C. was continued with stirring, and 2.05 mL (9.75 mmol) of triamine was added. At 330 minutes after the start of the reaction, 288 mL (1.95 mol) of 1,7-octadiene and 4.1 mL (19.5 mmol) of triamine were added, and heating at 70° C. was continued with stirring. At 570 minutes after the start of the reaction, the...
synthesis example 2
Synthesis of a Crosslinkable silyl Group-Terminated poly(n-butyl acrylate)
[0312]A 2-liter flask was charged with 8.39 g (58.5 mmol) of cuprous bromide and 112 mL of acetonitrile, and the contents were heated at 70° C. with stirring under a nitrogen stream for 30 minutes. Thereto were added 17.6 g (48.8 mmol) of diethyl 2,5-dibromoadipate and 224 mL (1.56 mol) of butyl acrylate, and the mixture was further heated at 70° C. with stirring for 45 minutes. Thereto was added 0.41 mL (1.95 mmol) of pentamethyldiethylenetriamine (herein after referred to as “triamine”), and the reaction was thereby started. While continued heating at 70° C. with stirring, 895 mL (6.24 mol) of butyl acrylate was added dropwise intermittently over 160 minutes beginning at 80 minutes after start of the reaction. During this dropping, 1.84 mL (8.81 mmol) of triamine was added. After the lapse of 375 minutes after start of the reaction, 288 mL (1.95 mol) of 1,7-octadiene and 4.1 mL (19.5 mmol) of triamine were a...
examples 1 to 5
[0315]The crosslinkable silyl group-containing vinyl polymer of Synthesis Example 1 was blended with a commercially available, crosslinkable silyl group-terminated polyether polymer (S203, product of Kaneka Corporation) in various mixing ratios shown in Table 1, and the mixtures were evaluated for compatibility by visual observation. Each mixture (100 parts by weight) was blended under stirring with 1 part by weight of water and 1 part by weight of dibutyltin dimethoxide, the whole mixture was defoamed at room temperature using a vacuum drier, and then curing was allowed to proceed at 50° C. for 3 days to give a rubber-like cured product. The results thus obtained are shown in Table 1.
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