摘要:
A mixture of elastomeric thermoplastic compositions which includes, on a weight percentage basis, (A) from 40 to 90% of a heterophasic polyolefin composition having a melt flow rate measured according to ASTM-D 1238, condition L, ranging from 20 to 100 g/10 min; and (B) from 10 to 60% of a heterophasic polyolefin composition that is partially dynamically crosslinked. The powders of this mixture are used in slush molding process for the production of laminated products.
摘要:
Compositions of elastoplastic ionomeric polymers having hardness below 92 points Shore A. comprising polar elastomers (10-45 wt. %), such as polyacrylic and nitrile rubbers, apolar crystalline polyolefins (15-40 wt. %) and elastoplastic polyolefins (25-75 wt. %). These compositions are used for making single-layer and multilayer laminar products that can be bonded by radio-freqeuncy welding, and manufactured articles possessing antistatic properties.
摘要:
This invention relates to PP compositions, particularly suitable for the preparation of foamed materials, comprising, by weight:a) 3-75% of cross-linked PPb) 97-25% of not cross-linked PP, having (.eta.) comprised between 0.50 and 1.3 dl/g, and are characterized by:M.I. (230.degree. C., 2.16 Kg) comprised between 0.001 and 600 kg/10'cross-linked PP as dispersion in the not cross-linked PP,and in form of about spheroidal gels of 0.5-100 microns and to a process for the preparation of the above mentioned compositions, comprising to allow a mix of PP with peroxidic cross-linking, a furane derivative co-agent and optionally a foaming agent, to undergo a dynamical vulcanization.
摘要:
An elastomeric thermoplastic polyolefin composition comprising (i) an heterophasic olefin polymer composition comprising a crystalline propylene homopolymer of copolymer fraction and an elastomeric ethylene copolymer fraction and (ii) an elastomeric polymer having a hardness equal to or less than 90 points selected from the group consisting of copolymers of ethylene, ethylene-methyl acrylate copolyers, saturated or unsaturated styrene block copolymers and unsaturated norbornene polymers.
摘要:
Mixtures of C2-C10 olefin polymers functionalized with carboxylic acids which are neutralized from 1 to 100% with metallic ions The mixtures comprise (by weight): (1) 100 parts of a heterophasic polyolefin composition comprising crystalline polypropylene and an elastomeric fraction of an ethylene/propylene or superior ethylene/&agr;-olefin copolymer where the ethylene content is less than 40%; and (II) 0-250 parts of an elastomeric polymer selected from: a) ethylene/C3-C10 &agr;-olefin copolymers containing at least 20% of a C3-C10 &agr;-olefin; b) ethylene/methyl acrylate copolymers containing from 15 to 30% of recurrent units of methyl acrylate, and having a MFR ranging from 1 to 10 g/10 min; and c) polyisobutylenes; d) atactic propylene homopolymers and amorphous ethylene/C3-C10 &agr;-olefins copolymers produced with metallocenic catalysts; and e) styrene block copolymers containing butadiene and isoprene as comonomer.
摘要翻译:与用金属离子从1至100%中和的羧酸官能化的C2-C10烯烃聚合物的混合物混合物包含(重量):(1)100份包含结晶聚丙烯和乙烯的弹性体级分的多相聚烯烃组合物 丙烯或乙烯/乙烯/α-烯烃共聚物,其中乙烯含量小于40%; 和(II)0-250份选自以下的弹性体聚合物:a)含有至少20%的C 3 -C 10α-烯烃的乙烯/ C 3 -C 10α-烯烃共聚物; b)乙烯/丙烯酸甲酯共聚物,其含有15-30%丙烯酸甲酯的复发单位,MFR为1-10g / 10min; 和c)聚异丁烯; d)用金属茂催化剂制备的无规丙烯均聚物和无定形乙烯/ C 3 -C 10α-烯烃共聚物; 和e)含有丁二烯和异戊二烯作为共聚单体的苯乙烯嵌段共聚物。
摘要:
A foamed ionomer polymer comprising metal ions pertaining to the IA, IIA, or IIB Group of the Periodic Table, and a crystalline or semicrystalline graft copolymer where the backbone polymer chain of the graft copolymer is a polymer of an olefin selected from ethylene and C3-C10 &agr;-olefins, and the grafted chains comprise monomers containing at least one functional group selected from carboxylic groups and their derivatives.
摘要:
A bituminous mixture having improved physical properties is obtained by adding to a bitumen a polyphosphoric acid (I) containing phosphorus, calculated as P.sub.2 O.sub.5, in amount from 80% to 87% by weight, and a polymer composition (II) comprising (A) a propylene homopolymer or copolymer, (B) optionally an ethylene copolymer fraction insoluble in xylene at ambient temperature and (C) a copolymer fraction soluble in xylene at ambient temperature.
摘要翻译:通过向沥青中加入含有以P 2 O 5计算的磷的多磷酸(I),其量为80-87%(重量),和(A)的聚合物组合物(II),得到具有改善的物理性质的沥青混合物 丙烯均聚物或共聚物,(B)任选的环境温度下不溶于二甲苯的乙烯共聚物部分和(C)在环境温度下可溶于二甲苯的共聚物部分。
摘要:
Polyolefin compositions comprising: (A) 20 to 50 parts by weight of a particular propylene polymer having a MWD greater than 3.5; and (B) 50 to 80 parts by weight of an elastomeric ethylene copolymer having a low enthalpy of fusion and a narrow MWD. The compositions of the invention are capable of giving, after dynamic vulcanization, thermoplastic elastomeric products having optimum elastomeric properties and a good balance of physico-mechanical properties.
摘要:
Esters of 3-(2-furyl)-2-propenoic acid with diols having the general formula A2X, in which A is a 3-(2-furyl)-2-propenoate group and X is a C1-C6 alkylene group. The said esters are used as crosslinking agents in processes for crosslinking polymers.
摘要:
The present invention relates to polyolefin compositions comprising: (a) 20 to 50 parts by weight of a particular propylene polymer having an MWD greater than 3.5; and (b) 50 to 80 parts by weight of an elastomeric ethylene copoymerR having a low enthalpy of fusion and a narrow MWD. The compositions of the invention are capable of gining, after dynamic vulcanization, thermoplastic elastomeric products having optimum elastomeric properties and a good balance of physico-mechanical properties