The present invention provides polymer compositions having improved corrosivity, color stability and clarity. Also disclosed is a process of preparing the polymers. The process may comprise incorporating into the polymer an acid neutralizing amount of an amorphous aluminum silicate. The amorphous aluminum silicate may be present in the polymer in an amount such that the polymer composition having a Corrosivity Index of less than 6. A refractive index of the amorphous aluminum silicate may be the same or substantially the same as a refractive index of the polymer.

The present invention relates to a backsheet for photovoltaic modules comprising a polymeric layer comprising an aliphatic polyamide comprising 1,10-decanedioic acid. Examples of such aliphatic polyamides are polyamide 4,10, polyamide 5,10 or polyamide 6,10. Preferably polyamide 4,10 is present in the rear layer of the backsheet. A polyolefin layer is preferably present in the core layer of the backsheet. It is however also possible that the polyamide is present in the core layer and polyolefin is present in the rear layer of the backsheet. The polyolefin is preferably chosen from the group consisting of polyethylene, polypropylene or ethylene-propylene copolymers. More preferably the polyolefin is polypropylene. The backsheet preferably comprises at least a further polymeric layer comprising a polymer selected from the group consisting of an optionally functionalized polyolefin such as a maleic anhydride functionalized polypropylene homo or copolymer. The present invention further relates to a photovoltaic module containing essentially, in order of position from the front-sun facing side to the back non-sun-facing side, a transparent pane, a front encapsulant layer, a solar cell layer comprised of one or more electrically interconnected solar cells, a back encapsulant layer and the back-sheet according to the present invention.

Capsule for taking up, in particular, powder or granular substances, having a base body (22) which is suitable for taking up a powder or granular substance and which has an opening (26), and having a cover for closing the opening (26) of the base body (22), the cover being a covering foil having an aluminium-containing carrier and a coating (4) arranged on this carrier (2), the coating being an atactic coating containing polypropylene. Furthermore, the invention relates to a foil (1), in particular a covering foil for closing an opening of a base body (22) suitable for taking up a powder or granular substance, forming a capsule, the foil comprising an aluminium-containing carrier and an atactic, polypropylene-containing coating arranged on this carrier (2), as well as a method for manufacture of such a foil (1), a carrier made of an aluminium-containing material being provided and an atactic, polypropylene-containing coating (4) being arranged on this carrier.

The present invention provides polymer compositions having improved corrosivity, color stability and clarity. Also disclosed is a process of preparing the polymers. The process may comprise incorporating into the polymer an acid neutralizing amount of an amorphous aluminum silicate. The amorphous aluminum silicate may be present in the polymer in an amount such that the polymer composition having a Corrosivity Index of less than 6. A refractive index of the amorphous aluminum silicate may be the same or substantially the same as a refractive index of the polymer.

Extrudable compositions were prepared comprising poly(propylene) and a liquid additive comprising a lactam group. The compositions can comprise other optional additives that include a polyhemiaminal, antioxidants, UV light absorbers, and surfactants. The extruded compositions have higher percent elongation at break and lower Young's modulus compared to extruded poly(propylene) lacking the liquid additive. These and other property improvements make the extruded compositions attractive for forming field joint coatings for undersea pipeline applications.

Extrudable compositions were prepared comprising poly(propylene) and a liquid additive comprising a lactam group. The compositions can comprise other optional additives that include a polyhemiaminal, antioxidants, UV light absorbers, and surfactants. The extruded compositions have higher percent elongation at break and lower Young's modulus compared to extruded poly(propylene) lacking the liquid additive. These and other property improvements make the extruded compositions attractive for forming field joint coatings for undersea pipeline applications.

The present invention relates to an olefin-based paint. The purpose of the present invention is to provide a paint with excellent organic solvent solubility or dispersibility, low paint viscosity, minimal coating irregularities even at high concentrations, excellent handling and storage stability, and excellent blocking resistance and coated film stability. In order to meet this purpose, an olefin-based paint is used that is characterized by containing a solution or dispersion obtained by dissolving or dispersing 0.1-55 parts by mass of a propylene--olefin copolymer (A) for 100 parts by mass of an organic solvent. The copolymer (A) is characterized by containing 60-90 mol % of propylene-derived constituent units (a) having a weight-average molecular weight (Mw), measured by GPC, in the range of 3,000 to 40,000, and 10-40 mol % of -olefin-derived constituent units (b) having 4 or more carbon atoms [wherein (a)+(b)=100 mol %].

The present invention relates to an olefin-based paint. The purpose of the present invention is to provide a paint with excellent organic solvent solubility or dispersibility, low paint viscosity, minimal coating irregularities even at high concentrations, excellent handling and storage stability, and excellent blocking resistance and coated film stability. In order to meet this purpose, an olefin-based paint is used that is characterized by containing a solution or dispersion obtained by dissolving or dispersing 0.1-55 parts by mass of a propylene--olefin copolymer (A) for 100 parts by mass of an organic solvent. The copolymer (A) is characterized by containing 60-90 mol % of propylene-derived constituent units (a) having a weight-average molecular weight (Mw), measured by GPC, in the range of 3,000 to 40,000, and 10-40 mol % of -olefin-derived constituent units (b) having 4 or more carbon atoms [wherein (a)+(b)=100 mol %].

A polypropylene microsphere and a preparation method therefor, a 3D printing raw material, and a use are provided. The polypropylene microsphere contains 0.2 wt %-10 wt % of a structural unit derived from ethylene and 90 wt %-99.8 wt % of a structural unit derived from propylene. A melting heat absorption curve of the polypropylene microsphere is obtained by means of a differential scanning calorimeter (DSC), and a half-peak width (Wm) of the melting heat absorption curve of the polypropylene microsphere is 4-10 C. The crystallization sequence distribution of the polypropylene microsphere is uniform, and when the polypropylene microsphere is used for 3D printing, 3D printing melting is uniform.