摘要:
Mixtures comprising linear block copolymers composed of vinylaromatic monomers and dienes of the structure (I) S1-B1-S2 and (II) B2-S3, where S1 is a block composed of vinylaromatic monomers whose number-average molar mass Mn is in the range from 40 000 to 1 00 000 g/lmol, each Of S2 and S3 is a block composed of vinylaromatic monomers whose number-average molar mass Mn is in the range from 5000 to 20 000 g/mol, each of B1 and B2 is one or more blocks composed of dienes or is copolymer blocks composed of dienes and vinylaromatic monomers whose number-average molar mass Mn is in the range from 15 000 to 100 000 g/mol, and the ratio of block copolymers (I)/(II) is in the range from 0.5 to 10, and their use for impact-modification of blends using polystyrene.
摘要翻译:包含由乙烯基芳族单体和结构(I)S 1 -S 1 -S 2 -S 2的二烯构成的线性嵌段共聚物的混合物和(II) B 2 -S 3,其中S 1是由数均摩尔质量M N n的乙烯基芳族单体组成的嵌段, SUB>在40000至10000g / lmol的范围内,每个S 2和S 3是由乙烯基芳族单体组成的嵌段,其数均摩尔数 质量M N n在5000至20000g / mol的范围内,B 1和B 2 2中的每一个是一个或多个组成的嵌段 的二烯或由二烯和乙烯基芳族单体组成的共聚物嵌段,其数均摩尔质量M n N在15 000至100 000g / mol的范围内,嵌段共聚物(I)的比例 /(II)在0.5至10的范围内,并且它们用于使用聚苯乙烯的共混物的冲击改性。
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:
Block copolymers comprise at least two hard blocks S1 and S2 made from vinyl aromatic monomers and, between these, at least ore random soft block B/S made from vinyl aromatic monomers and from dienes, where the proportion of the hard blocks is above 40% by weight, based on the total block copolymer, wherein the 1,2-vinyl content in the soft block B/S is less than 20%.
摘要:
Polymerization initiator comprising an alkaline earth metal compound chosen from the group a) of heteroleptic alkaline earth metal compounds of the formula I L—M—R (I) or b) of cationic alkaline earth metal complexes of the formula II [D→M—R]+X− (II), where M: is Ca, Sr or Ba, L: is a polymerization-inactive ligand, R: is a polymerization-active ligand, D: is a donor ligand, and X: is a non-coordinating anion, and processes for the preparation of the polymerization initiators and processes for anionic polymerization in the presence of the polymerization initiators.
摘要:
A mixture which contains a) a copolymer or block copolymer A comprising one or more copolymer blocks (B/S)A which are respectively composed of from 65 to 95% by weight of vinylaromatic monomers and of from 35 to 5% by weight of dienes, and whose glass transition temperature TgA is in the range from 40° to 90° C., b) a block copolymer B comprising at least one hard block S which is composed of vinylaromatic monomers, and comprising one or more copolymer blocks (B/S)B which are respectively composed of from 20 to 60% by weight of vinylaromatic monomers and of from 80 to 40% by weight of dienes, and whose glass transition temperature TgB is in the range from −70° to 0° C., c) a polystyrene C, and its use for the production of packaging for electronics components.
摘要:
Composition comprising at least one copolymer A composed of at least one alkylated styrene, of acrylonitrile, and, if appropriate, of at least one further monomer, at least one block copolymer B which has at least one block forming a hard phase and composed of at least one vinylaromatic monomer and has at least one block forming a soft phase and composed of at least one vinylaromatic monomer and of at least one diene, and at least one further copolymer C, and, if appropriate, one polymer D, where the copolymer C is at least one triblock copolymer composed of a first block composed of at least one vinylaromatic monomer, of a second block composed of at least one diene, and of a third block composed of at least one methyl methacrylate monomer, or comprising at least 50% by weight of methyl methacrylate, and the polymer D is at least one styrene polymer selected from glass-clear and impact-resistant polystyrene. The present invention moreover relates to a process for the preparation of the inventive compositions, to the use of the inventive compositions for the production of moldings, of foils, of fibers, or of foams, to moldings, foils, fibers, or foams comprising the inventive composition, and also to the use of the inventive composition as packaging for electronic components, such as integrated circuits (microchips) (“electronic packing”), for applications in chemical engineering, in household products, in bathroom items, e.g. toothbrush tumblers, cosmetics holders, etc., as housings, as tubes, as profiles, for medical items or medical devices, and in toys.
摘要:
The present invention relates to a thermoplastic molding composition comprising (A) as component A, particles composed of at least one oxidatively crosslinked vegetable oil as core, encapsulated by at least one thermoplastic, (B) as component B, at least one further thermoplastic compatible with the at least one thermoplastic present in the shell of component A, (C) as component C, at least one resin compatible with the at least one thermoplastic present in the shell of component A, (D) as component D, at least one filler, and (E) as component E, if appropriate, further additives, and also to a process for the production of this thermoplastic molding composition.
摘要:
The invention relates to a flameproofed resilient block polymer comprising polymerized units of at least one vinylaromatic monomer and at least one diene monomer with at least one flameproofing agent B) which comprises a compound comprising phosphorus, in particular a phosphorus-containing melamine compound, a process for the preparation and the use for the production of moldings.
摘要:
The present invention relates to mixtures comprising linear block copolymers made from vinylaromatic monomers and from dienes of the structure (I) S1-B1-S2 and (II) S3-B2-S4, where S1 is a block made from vinylaromatic monomers with number-average molar mass Mn in the range from 40,000 to 100,000 g/mol, each of S2, S3 and S4 is a block made from vinylaromatic monomers with number-average molar mass Mn in the range from 5,000 to 20,000 g/mol, each of B1 and B2 is a block made from dienes or a copolymer block made from dienes and from vinylaromatic monomers with numberaverage molar mass Mn in the range from 15,000 to 40,000 g/mol, and the ratio of the block copolymers (I)/(II) is in the range from 0.6 to 2.
摘要翻译:本发明涉及包含由乙烯基芳族单体和结构式(I)的二烯制备的线性嵌段共聚物的混合物,其中R 1,R 2,R 2, 和(II)S 3 -S 2 -S S 4,其中S 1是一个制成的块 来自具有40,000至100,000g / mol的数均分子量M N n N的乙烯基芳族单体,S 2,S 3, 和S 4是由数均分子量M 2 N 2以上的乙烯基芳族单体制成的嵌段,其数量为5,000〜20,000g / mol,B 1 和B 2是由二烯制成的嵌段或由二烯制成的共聚物嵌段和数均分子量M N n N的乙烯基芳族单体在15,000至 40,000g / mol,嵌段共聚物(I)/(II)的比例在0.6〜2的范围内。
摘要:
A blend comprising a) from 5 to 40% by weight of a linear block copolymer of vinylaromatic monomers and dienes of the structure (I) S1—(B/S)1—S2 having a flexible phase fraction (B/S)1 of not more than 55% by weight, based on the block copolymer (I) and b) from 95 to 60% by weight of a linear block copolymer of vinylaromatic monomers and dienes of the structure (II) S3—(B/S)2—S4 having a flexible phase fraction (B/S)2 of at least 65% by weight, based on the block copolymer (II), where S1 is a block of vinylaromatic monomers having a number average molar mass Mn in the range from 40 000 to 100 000 g/mol, S2, S3 and S4 are in each case blocks of vinylaromatic monomers having a number average molar mass Mn in the range from 5000 to 20 000 g/mol, (B/S)1 and (B/S)2 are in each case copolymer blocks of dienes and vinylaromatic monomers having a number average molar mass Mn in the range from 15 000 to 40 000 g/mol.