摘要:
The present invention provides curable hot melt compositions including reactive polymers, which are reinforced by organic polymers to impart higher tensile strength and elongation to the compositions upon cure. In particular, the present invention provides curable hot melt compositions including a silicone urea based polymer and a reinforcement polymer. In some embodiments, the compositions cure upon exposure to moisture and/or radiation. The compositions may be used, for example, as sealants or adhesives.
摘要:
The present invention relates to a method of preparing fast curing silicone RTV compositions by reacting an amino endcapped silicone with an isocyanato functionalized silane, and to compositions formed thereby. In particular, the present invention provides compositions which include silicones endcapped with silanes which contain α-ureas. Illustrative of the inventive compositions are those which include a polymer of Formula (I):
摘要:
The present invention relates to compositions which include compounds that are end-capped with silanes containing radiation cure groups. In addition, the invention relates to a method for preparing such compounds. In particular, the radiation cure groups are attached to the silane via a methylene linkage. Illustrative of the inventive compositions are those which include a compound of Formula (I):
摘要:
The invention provides fast moisture and photo/moisture curing silicone ions and methods for the preparation thereof. More particularly, the compositions are prepared from silanol and silane cappers; the cappers have an α-carbon bonded to the silicon atom allowing for a favorable hypervalent silicon transition state when reacting the silane and silanol. This favorable transition state enables both a fast endcapping reaction and contributes to the fast moisture curing properties of the inventive compositions.
摘要:
A process for producing a silicone sealant, which is stable in the absence of moisture, cures when exposed to moisture, has an elongation at break of greater than 800 percent, and has adhesion to concrete. The silicon sealant is produced by first mixing an alkoxysilethylene endblocked polymer, a dialkyldialkoxysilane, and a titanium catalyst, then mixing in precipitated calcium carbonate filler having a fatty acid surface treatment.
摘要:
The present invention relates to photoradiation and/or moisture curing silicone compositions and methods for producing and using the same. In particular, the methods of the present invention permit controlled growth of a polymer, and allow for incorporation of pendant functional groups along the length of the polymer.
摘要:
The present invention relates to a process for forming a cured-in-place gasket by liquid injection molding. More particularly, the present invention relates to a low pressure and room temperature process for forming a cured-in-place gasket by liquid injection molding.
摘要:
The present invention relates to curable silicone compositions which include a fluorescent agent for detection purposes and which have a cure system which enables the silicone compositions to possess improved depth of cure. The silicone compositions are photocurable, and may also be moisture or heat curable.
摘要:
This application relates to polysiloxane compositions grafted with improved heat curable, moisture curable, or heat/moisture curable groups. In particular, the polysiloxane compositions have reactive groups on the terminal or pendent areas of the siloxane backbone, which once reacted provide improved heat and/or moisture curable polysiloxanes.
摘要:
A room temperature vulcanizing silicone polymer composition including: a) as part of the silicone polymer, a segment including a silicone polymer of Formula (I): b) a finely-divided inorganic filler present in an amount of at least about 25% by weight of the total composition. Enhanced elongation ability is possessed by these compositions.