摘要:
Compositions comprenant un ou plusieurs polymères d'oléfine fonctionnalisés par au moins un agent de fonctionnalisation choisi parmi les acides carboxyliques, leurs esters, leurs anhydrides et leurs sels métalliques et un ou plusieurs premiers agents stabilisants comportant un ou plusieurs groupements phénols stériquement encombrés et au plus une fonction ester, et un ou plusieurs deuxièmes agents stabilisants comportant un ou plusieurs groupements phénols stériquement encombrés et ne comprenant pas de fonction ester.
摘要:
The invention relates to a stabilising composition containing a 2-cyan-3,3-diarylacrylic acid ester, a sterically hindered monomeric amine, a sterically hindered phenol and optionally a chroman derivative and/or an organic phosphite and/or phosphonite. The inventive stabilising composition is especially suitable for stabilising thermoplastic polyurethane against light, oxygen and heat.
摘要:
A copolymer having a softening point as high as 100 to 135°C which is obtained by thermally polymerizing cyclopentadiene and/or dicyclopentadiene with a vinylaromatic compound in the presence of a solvent in an amount of 0.1 to 0.5 times, excluding 0.5 times, by weight the amount of all monomers; and a copolymer obtained by hydrogenating the high-softening-point copolymer. The hydrogenated copolymer is suitable for use as a high-softening-point tackifier resin in hot-melt adhesives, etc.
摘要:
The present invention relates to aqueous dispersions for solid phenolic antioxidants, wherein the antioxidants are dispersed in the aqueous phase with polyvinyl alcohol as dispersing agent. The invention also relates to a process, which comprises stabilising a polymer material against oxidative, thermal or light-induced degradation by adding to the polymer the aqueous dispersion.
摘要:
The invention relates to a stabilising composition containing a 3-arylacrylic acid ester, a sterically hindered monomeric amine, a sterically hindered phenol, a chroman derivative, and an organic phosphite and/or phosphonite. The inventive stabilising composition is especially suitable for stabilising thermoplastic polyurethane against light, oxygen and heat.
摘要:
The invention relates to a stabilising composition comprising a 3-arylacrylic acid ester, a polymer compound having a molecular weight of at least 2,000 and carrying side-groups having amine functions on a polymer skeleton, all of the substituents in α-position in relation to the amine nitrogen atom being different from hydrogen, and a sterically hindered phenol. The inventive stabilising composition is especially suitable for stabilising thermoplastic polyurethane against light, oxygen and heat.
摘要:
A resin composition for agricultural film, which composition contains 100 parts by mass of a synthetic resin (A) and the below-specified amount of a polymer stabilizer (B). Polymer stabilizer (B): an adduct obtained by adding a compound (b1) represented by the following formula (I) to a polymer (b2) having a molecular weight of at least 300: (wherein n represents an integer of 1-4; X represents -O- or -NH-; and R represents a hydrogen atom, a C1-C20 aliphatic acyl group, a C1-C20 aliphatic polyacyl group, a C1-C20 aromatic acyl group, or a C1-C20 aromatic polyacyl group). Amount of polymer stabilizer (B) : such an amount that makes the amount of nitrogen atoms contained in the polymer stabilizer (B) 0.0005-1 part by mass.
摘要:
The present invention relates to thermoplastic hydrophilic polymeric compositions for making a liquid impermeable moisture vapour permeable structure, for example by forming the composition into a layer or film. The thermoplastic compositions comprise preferred thermoplastic polymers and suitable compatible plasticisers which allow a controlled extraction/release by water or aqueous fluids. The layers made from the thermoplastic hydrophilic polymeric compositions of the present invention can find a variety of applications wherein liquid imperviousness and moisture vapour permeability are desirable.