MOLDABLE SILICONE ELASTOMERS HAVING SELECTIVE PRIMERLESS ADHESION

• Main Authors: WHEELER PAUL, HALLADAY JAMES, ZAMBANINI ROSS, ZIEBELL RICK
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2021
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES; USE OF MATERIALS THEREFOR; WOODSTAINS

A composition for use in modifying the adhesion properties of silicone rubber compositions is described. The composition comprises alkoxy silanes, such as alkoxy silanes further comprising additional chemical functional groups such as epoxides, esters, and anhydrides; diffusion promoters that are completely or partially immiscible in the silicone rubber composition being modified; and compounds that can balance the hydride content of the silicone rubber compositions being modified. Modified curable silicone rubber compositions and methods of modifying the adhesive properties of silicone rubber compositions are also described. In particular, use of the presently disclosed compositions can provide modified silicone rubber compositions having selective adhesion for surfaces comprising thermoplastic and thermoset polymers as compared to metal surfaces. 本申请描述了一种用于改进硅橡胶组合物的粘合性能的组合物。该组合物包含烷氧基硅烷，例如还包含诸如环氧化物、酯和酸酐之类的附加化学官能团的烷氧基硅烷；完全或部分不混溶于经改性的硅橡胶组合物的扩散促进剂；以及可平衡经改性的硅橡胶组合物的氢化物含量的化合物。本申请还描述了经改性的可固化硅橡胶组合物以及改进硅橡胶组合物的粘合性能的方法