Phenolic resin 551 is a heat-reactive alkyl phenolic resin used to synthesize neoprene adhesive. 551 formulated adhesive has lower initial viscosity and excellent viscosity stability than similar adhesives. Among neoprene adhesives, 551 shows good bond strength at room temperature.
Exterior: | Transparent irregular sheet or block | Exterior: | Transparent irregular sheet or block |
proportion: | 1.03 | proportion: | 1.03 |
Melting point (capillary method): (Capillary), (° F): | 170—195 | Melting point (capillary method): (Capillary), (° F): | 170—195 |
Softening point, spherical ring method (B & R), (℃): | 100—110 | Softening point, spherical ring method (B & R), (℃): | 100—110 |
Color, GARDNER-Holdt, 60% soluble in toluene: | 0—8 | Color, GARDNER-Holdt, 60% soluble in toluene: | 0—8 |
Exterior: | Transparent irregular sheet or block | Exterior: | Transparent irregular sheet or block |
proportion: | 1.03 | proportion: | 1.03 |
Melting point (capillary method): (Capillary), (° F): | 170—195 | Melting point (capillary method): (Capillary), (° F): | 170—195 |
Softening point, spherical ring method (B & R), (℃): | 100—110 | Softening point, spherical ring method (B & R), (℃): | 100—110 |
Color, GARDNER-Holdt, 60% soluble in toluene: | 0—8 | Color, GARDNER-Holdt, 60% soluble in toluene: | 0—8 |





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