摘要:
The invention relates to a reactive batch of thermoplastic polymer particles on the basis of poly-α-olefins, elastomeric block copolymers and/or polyisobutylenes. Said batch is useful for producing insulating glass units consisting of two or several glass panes, casting resin panes, solar collectors or façade elements for edifices. The reactive batch contains a portion of batch particles which contain polymers with reactive groups selected from hydroxyl groups, amino groups, carboxyl groups, carboxylic acid anhydride groups, mercapto groups, hydrosilicon groups and/or hydrosilyl groups. Another portion of the batch particles contains polymers with reactive groups that are complementary thereto and are selected from isocyanate groups, epoxide groups, active olefinically unsaturated double bonds and/or water-producing substances. Said batch of reactive particles is homogenised only directly before the last use and, immediately afterwards, is applied to the substrate surfaces to be connected. Dosing problems have not been observed with respect to this kind of reactive granulates.
摘要:
The invention concerns a process for recycling hardened or partially hardened polysulphide and/or polymercaptan compositions. Processing is carried out in a non-volatile liquid, with the addition of a depolymerization agent, preferably a sulphurous vulcanization accelerator known from rubber technology. The depolymerisate can be added in high proportions to the hardener component of two-component polysulphide and/or polymercaptan adhesives, sealants or coating materials without substantially modifying its hardening characteristics or properties concerning stability during storage.
摘要:
The invention relates to a reactive batch of thermoplastic polymer particles on the basis of poly-α-olefins, elastomeric block copolymers and/or polyisobutylenes. Said batch is useful for producing insulating glass units consisting of two or several glass panes, casting resin panes, solar collectors or façade elements for edifices. The reactive batch contains a portion of batch particles which contain polymers with reactive groups selected from hydroxyl groups, amino groups, carboxyl groups, carboxylic acid anhydride groups, mercapto groups, hydrosilicon groups and/or hydrosilyl groups. Another portion of the batch particles contains polymers with reactive groups that are complementary thereto and are selected from isocyanate groups, epoxide groups, active olefinically unsaturated double bonds and/or water-producing substances. Said batch of reactive particles is homogenised only directly before the last use and, immediately afterwards, is applied to the substrate surfaces to be connected. Dosing problems have not been observed with respect to this kind of reactive granulates.
摘要:
The use of benzoate softening agents in polysulphide polymer or polymercaptan polymer-based two-component insulating glass adhesives/sealants simplifies production due to their lower viscosity. The miscibility and cure speed of the two components are improved. The use of phthalate softening agents, which can have endocrine effects on humans and animals, is also avoided.
摘要:
Melt adhesive compositions containing a mixture of at least one reactive binder based on silane-functional polyisobutylene, hydrated polybutadiene and/or poly-α-olefines and a non-reactive binder from the group of butyl rubbers, poly-α-olefines and a non-reactive binder from the group of butyl rubbers, poly-α-olefines, polybutenes, styrene block copolymers or diene polymers may be used as one or two-part adhesives/sealants for the production of double glazing. Here, no separate spacer of metal or plastic sections are needed. As the entire edge bond consists of a uniform material, on the one hand the production process for the double-glazing units can be greatly simplifed and on the other the uniform material can be subjected particularly easily to a recycling process after a double-glazing unit has been dismantled, as it not a composite material.
摘要:
The invention concerns a process for recycling hardened or partially hardened polysulphide and/or polymercaptan compositions. Processing is carried out in a non-volatile liquid, with the addition of a depolymerization agent, preferably a sulphurous vulcanization accelerator known from rubber technology. The depolymerisate can be added in high proportions to the hardener component of two-component polysulphide and/or polymercaptan adhesives, sealants or coating materials without substantially modifying its hardening characteristics or properties concerning stability during storage.