摘要:
A thermoplastic elastomer composition comprises a) from 5 to 99% by weight of a block copolymer which is composed of hard blocks S made from vinyl aromatic monomers and of one or more random soft blocks B/S made from dienes and from vinyl aromatic monomers, b) from 1 to 95% by weight of a plasticizer with a higher polarity than white oil and with a lower polarity than diisooctyl phthalate, c) from 0 to 50% by weight of a polyolefin, and d) from 0 to 60% by weight of additives, where the total of a) to d) is 100% by weight. The use of the molding compositions to produce flexible or elastic moldings is described, as are the resultant moldings.
摘要:
The present invention relates to coated polyoxymethylene moldings comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide C1 or a polyvinyl ester C2 or a graft polymer C3 composed of C1 and C2 or a mixture of these, and the formaldehyde scavenger D) used comprises at least one imidazolidin-2-one compound.
摘要:
A polymer material (6) is formed from a first polyethylene component (1) having a low density (VLDPE) which is silane-grafted with an organic silane (3) in combination with organic peroxide (4) and is cross-linked through storage in a damp environment and/or in water. The polymer material (6) can be processed into medical instruments under dry conditions prior to cross-linkage. After cross-linkage the medical instruments made from the polymer material (6) exhibit a high degree of transparency, are non-buckling and flexible. The polymer material (6) is produced in an extruder, preferentially in a double-worm extruder.
摘要:
The present invention relates to coated polyoxymethylene moldings comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide C1 or a polyvinyl ester C2 or a graft polymer C3 composed of C1 and C2 or a mixture of these, and the formaldehyde scavenger D) used comprises at least one imidazolidin-2-one compound.
摘要:
A continuous process for preparing pigmented thermoplastic molding compositions in an extruder, comprises I) in a first zone A) metering in from 10 to 99.999% by weight of a thermoplastic polymer into an extruder and II) in a subsequent zone at temperatures below the respective glass transition temperature of the thermoplastic A) B) adding from 0.001 to 60% by weight of a colorant and then heating the thermoplastic/colorant mixture in the subsequent zones, homogenizing the polymer melt and extruding the resultant mixture.
摘要:
A method for the continuous colorimetry of plastics molding compounds, which involves light being introduced, via transmitter light pipes and a sensor head, into the melt of the molding compound and the light reflected there being passed, via receiver light pipes, to a spectrometer or multirange photometer, conjugate transmitter and receiver light pipes in each case being spaced equidistantly.
摘要:
Coated polyoxymethylene moldings comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide C1 or a polyvinyl ester C2 or a graft polymer C3 composed of C1 and C2 or a mixture of these, and the formaldehyde scavenger D) used comprises at least one hydrazide compound.
摘要:
The present invention relates to coated polyoxymethylene moldings, comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide C1 or a polyvinyl ester C2 or a graft polymer C3 composed of C1 and C2 or a mixture of these, and the formaldehyde scavenger D) used comprises at least one lysine compound.
摘要:
The present invention relates to coated polyoxymethylene moldings, comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide C1 or a polyvinyl ester C2 or a graft polymer C3 composed of C1 and C2 or a mixture of these, and the formaldehyde scavenger D) used comprises at least one lysine compound.
摘要:
Coated polyoxymethylene moldings comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide C1 or a polyvinyl ester C2 or a graft polymer C3 composed of C1 and C2 or a mixture of these, and the formaldehyde scavenger D) used comprises at least one hydrazide compound.