摘要:
Die Erfindung stellt ein Dichtungs- oder Dämpfungsprofilfür den Einsatz beim Tunnelbau, Tiefbau, Gleisoberbau und/oder bei Fensterfassaden, sowie ein Verfahren zu dessen Herstellung bereit. Das erfindungsgemäße Dichtungs- oder Dämpfungsprofil (1) besteht aus einem quervernetzten Elastomer und weist einen Anteil von maximal zwei Gewichtsprozent elastischer Mikrosphären (2) auf. Das erfindungsgemäße Dichtungs- oder Dämpfungsprofil (1) weist ein vermindertes spezifisches Gewicht und/oder eine verminderte maximale Rückstellkraft bei starker Verpressung auf.
摘要:
A method for making high-pressure sheet gasketing material is provided that employs an elastomer, such as natural rubber and/or acylonitrile-butadiene rubber. Tert-butyl acetate is added to dissolve the elastomer. Other components may then be mixed with the dissolved elastomer and may include, for example, antioxidants, colorants, curing agents, curing accelerators, reinforcing fillers, and fibers such as organic and/or mineral fibers. The resulting dough may be formed into a high-pressure sheets, for use as gasketing material, using a two- roll sheeter machine, or the like.
摘要:
Elastic members for inkjet recording apparatus, made from (1) a thermoplastic elastomer composition comprising (a) 100 parts by weight of a hydrogenated block copolymer, (b) 60 to 170 parts by weight of a non-aromatic softener for rubber, and (c) 5 to 30 parts by weight of polypropylene, (2) a thermoplastic elastomer composition comprising (a) 100 parts by weight of a hydrogenated block copolymer, (b) 60 to 170 parts by weight of a non-aromatic softener for rubber, and (c) 5 to 30 parts by weight of a crystalline polyolefin and taking the form of a network structure having a pore diameter of 50 mu m or below, or (3) a thermoplastic elastomer composition comprising (a) 100 parts by weight of a hydrogenated block copolymer, (b) 60 to 170 parts by weight of a non-aromatic softener for rubber, and (c) 5 to 30 parts by weight of a crystalline polyolefin and having a dependence of melt viscosity on shear rate of -1.5 to -0.8 as measured with a capillograph. The elastic members are usable as ink tank valves, ink tank seals, sealing devices for protecting ink leaks from recording heads, and so on.
摘要:
Joints sealants with early water resistance contain aqueous polymer dispersions (I); non-ionic cellulose ether (II) from the group formed by hydroxyethyl, hydroxyethylmethyl, hydroxypropylmethyl and hydroxypropylcellulose; if necessary usual additives such as fillers, pigments, plasticisers, extenders, thickeners, antifoaming agents, dispersing agents, pH regulators, preservatives and anti-ageing dopes, as well as at least one organic liquid component from the group of usual additives. These joint sealants can be produced by intimately mixing (I) with the remaining components. In order to be able to add (II) in amounts higher than the solubility limit, the joint sealants are characterized by the fact that (II) is added in suspension in retarded and/or non retarded form to the liquid organic components, then mixed in.
摘要:
An asbestos-free material for use as a sealing, cushioning or separating element with an elastomer matrix contains, in addition to the customary fibers and elastic binders, a quantity of flaky inorganic material varying from 10 to 60 % of the total mass.
摘要:
The invention relates to an efficient process for the preparation and isolation of rubber particles formed in aqueous media and highly pure rubbers obtained thereby. The invention further relates to copolymer products comprising the same or derived therefrom.
摘要:
The present invention relates to a seal for a valve for use in a pharmaceutical dispensing device, which seal is formed from an elastomeric composition comprising: (a) one or more elastomers; and (b) a cross-linking agent comprising an aliphatic dialkyl peroxide and / or an aliphatic perketal peroxide.
摘要:
Die Erfindung bezieht sich auf den Einsatz von inaktiven mineralischen Füllstoffen (wie Kieselgur) in Kautschuken, besonders Nitrilkautschuken, um explosive Dekompression bei CO 2 zu vermindern.