摘要:
The thermoplastic polyurethane compositions described herein have very good recovery properties, rebound resilience, or both, while also having good softness (i.e. low hardness). It has been difficult to provide thermoplastic polyurethane compositions with this combination of properties. Some compositions described herein also provide low haze and/or good clarity properties. These combination of properties make the thermoplastic polyurethane compositions described herein useful materials for application that require fast recovery, good rebound resilience, or both while also requiring soft materials, and in some embodiments low haze and/or good clarity.
摘要:
This invention is directed to a polymer thick film thermoformable dielectric composition with a high dielectric constant. Dielectrics made from the composition can be used in various electronic applications to enhance the performance of thermoformable capacitive circuits.
摘要:
The invention relates to a composition which comprises at least one polyol component having a hydroxyl group content of 9% to 15% by weight relative to the total weight of the polyol component, and at least one isocyanate component having a free isocyanate group content of 10% to 15% by weight relative to the total weight of the isocyanate component. The polyol component comprises at least one polyol which is selected from the group of the polyether polyols, polyester polyols, and polyether polyester polyols. The isocyanate component comprises at least one di- or polyisocyanate-terminated polylactone prepolymer. The composition can be used as erosion-resistant coating material.
摘要:
The present invention relates to a polyester polyurethane material with long term hydrolysis resistance which is prepared from perchlorates and a polyester polyol comprising structure unit I, II, and III. The polyester polyurethane material having a mole ratio of structure unit II to III of 1:1.5 to 1.5:1 has better long term hydrolysis resistance. In another aspect of the present invention, there is provided soles, carpets, rollers, sealing strips, coating, tires, wipers, steering wheels or gaskets prepared from the polyester polyurethane material, and a use of the polyester polyurethane material.
摘要:
The present invention relates to the use of a compound having the following formula (I): in which: A1 represents a divalent alkylene radical comprising from 2 to 20 carbon atoms; A2 represents a divalent alkylene radical comprising from 2 to 20 carbon atoms; A3 is selected from the group consisting of the following divalent radicals: an alkylene comprising from 2 to 600; and an arylene comprising from 6 to 30 carbon atoms; X1, X3 and X4 represent —O— or —NH—; X′2 is selected from the group consisting of: —S—, —CH2 and a bond; and n and m represent an integer ranging from 1 to 1000; for the preparation of additives in a matrix of polyester, polyvinyl chloride, polyurethane, polyamide, poly(alkyl acrylate), poly(alkyl methacrylate), polystyrene or polyolefin.
摘要:
Disclosed are granules comprising an elastomeric polyurethane and bitumen, processes for preparing the granules in an extruder and to their use for preparing a bituminous binder, which may especially be used for producing prefabricated sealing membranes by depositing said bituminous binder onto a fibrous support.
摘要:
Aqueous binder composition comprising an organic emulsifiable polyisocyanate, an aromatic polyester polyol and a alkali metal salt of a carboxylic acid as trimerisation catalyst and its use for bonding mineral fibre or lignocellulosic material.
摘要:
The disclosure provides a cross-linkable polymer composition, a core layer for an information carrying card comprising such cross-linked composition, resulting information carrying card, and methods of making the same. A crosslinkable polymer composition comprises a curable base polymer resin in a liquid or paste form, and a particulate thermoplastic filler. The base polymer resin is selected from the group consisting of urethane acrylate, silicone acrylate, epoxy acrylate, urethane, acrylate, silicone and epoxy. The particulate thermoplastic filler may be polyolefin, polyvinyl chloride (PVC), a copolymer of vinyl chloride and at least another monomer, or a polyester such as polyethylene terephthalate (PET), a compound or blend thereof.
摘要:
A reinforced composite material based on a polymer matrix with reinforcement particles embedded therein. The polymer matrix is based on a polymer with soft and hard domains, and the reinforcement particles comprise inorganic nano-platelets in the polymer matrix in a volume fraction in the range of 0.01%-50%, the inorganic nano-platelets have a thickness in the range of 0.3-50 nm, with the proviso that the largest length and width is at least twice as large as the thickness; as well as inorganic micro-platelets in a volume fraction in the range of 1%-90%, wherein the inorganic micro-platelets have a thickness in the range of 10 nm-100 μm, with the proviso that the largest length and width is at least twice as large as the thickness. Also disclosed are multilayer structures based on such layers, methods for making such multilayer structures and uses thereof.
摘要:
A polymeric composition that includes at least one polymer and an effective amount of a nanoparticulate component. The nanoparticulate component is at least one of inorganic functional nanoparticulate compounds and graphene in which the nanoparticulate component is associated with the polymer. The polymer disclosed herein can have electromagnetic activity. The resulting polymeric composition exhibit a measurable electrical conductivity (σ) range of 10−14 to 4.7*106 (S/m) at 20° C. A polymeric precursor that includes at least one component selected from the group that includes isocyanates, polyisocyanates, MDI-terminated prepolymers and an effective amount of a nanoparticulate component. The nanoparticulate component is at least one of inorganic functional nanoparticulate component being at least one of inorganic functional nanoparticulate compounds and graphene that is associated with the prepolymer.