摘要:
A high strength thermoplastic vulcanizate (TPV) composition is provided. The TPV includes a dispersed rubber component, a polyolefinic thermoplastic resin component, a propylene copolymer and mineral filler present in the amount of 20 wt % to 70 wt % based on total of the thermoplastic vulcanizate composition. Preferably, the propylene copolymer has 60 wt % or more units derived from propylene; includes isotactically arranged propylene derived sequences; and has a heat of fusion less than 45 J/g. Preferably, the mineral filler is halogen free and flame retardant. The high strength TPV can be useful for making a variety of articles for electrical, construction, automotive, and consumer applications, including fuel cell.
摘要:
The present invention relates to polymer compositions with improved scratch resistance and no or low gloss change of the finished product during heat ageing, methods for making the compositions and useful articles made thereof.
摘要:
Disclosed herein are various compositions, including a transparent compositions with maximum haze of 50%, comprising (including): a first polymer component (FPC) that includes polypropylene having a melting point (Tm) ≧110° C.; a second polymer component (SPC) that includes a propylene polymer having 60 wt % or more units derived from propylene, including isotactically arranged propylene derived sequences and Tm
摘要:
An aspect of the description is directed to hydrolysable silane graft propylene-α-olefin copolymers useful for moisture curable sealants, the copolymers comprising a propylene-α-olefin copolymer component comprising propylene-derived units and from 5 to 35 wt %, by weight of the propylene-α-olefin copolymer, of ethylene-derived units or a C4 to C10 α-olefin-derived unit, and having, in one embodiment, the following features: a density of from 0.850 to 0.920 g/cm3; a MWD of from 1.5 to 20; an Hf of less than or equal to 75 J/g; a Tm of from 25 to 105° C.; and a triad tacticity by 13C NMR of 75% or greater; and a hydrolysable silane component. The graft copolymer can be combined with oil and/or a thermoplastic to form a graft copolymer composition capable of being cross-linked by exposure to moisture.
摘要:
Product, method and use of a copolymer AB as a compatibilizing agent between a polar thermoplastic polymer C and a polyolefine D. The method of making AB comprise the steps of: a) melting a copolymer (A) comprising a larger amount of methylmethacrylate units and a smaller amount of functional vinyl or (meth)acrylate units wherein functional moiety is selected in the group consisting of (a hydroxyl, a carboxylic, a glycidyl or an amine functional group); together with maleic anhydride grafted polypropylene (B) allowing condensation reaction to occur between the functions under “A” and the anhydride under “B”; b) the condensation copolymer obtained under a) is further melt together with the two polymers C and D to be homogenized, or melt processed as an interlayer between the two molten polymers.
摘要:
The present invention relates to a thermoplastic elastomer vulcanizate obtained from a thermoplastic propylene/ethylene/&agr;-olefin terpolymer, a rubber component and optional additives, by dynamic vulcanization of the rubber component with a non-peroxide curing system. The vulcanizate has both superior physical properties and excellent processability.
摘要:
The invention relates to a composition of a blend of an ethylene/propylene random copolymer and a low to very low density ethylene/C4 to C20-&agr;-olefin random copolymer and its use as an impact modifier for polyolefin compositions. The invention further relates to polyolefin compositions, particularly polypropylene compositions, comprising said impact modifier composition.
摘要:
Low oil swell, non sticky readily processable carboxylated nitrile rubber-thermoplastic polyurethane vulcanizate compositions have increased upper service temperature over comparable thermoplastic polyurethanes. The compositions of the present invention are made utilizing a processing aid, for example, maleated polyolefins and addition type curing agents such as bisoxazolines or bisimidazolines. The compositions generally contain thermoplastic polyurethane as a continuous phase with the carboxylated nitrile rubber being dispersed therein.
摘要:
A liquid heavy duty laundry detergent composition comprising a suspension of builder salt in liquid nonionic surfactant in which the pourability and physical stability of the composition is improved by the addition of small amounts of an alkaline earth metal or zinc salt of higher fatty acid, especially magnesium, calcium and zinc distearate. The yield stress is reduced and the pourability of the composition is improved especially at low concentrations of the alkaline earth metal or zinc salt.