A polymeric matrix including: 50 to 80%, preferably 64 to 73% PET; 18 to 50%, preferably 20 to 28% of a mixture of polyolefins; 0.1 to 15%, preferably 0.5 to 7% of at least one flame-retardant additive; 0 to 2%, preferably 0.2 to 1% of at least one antioxidant; 0 to 2% preferably 0.2 to 1% of at least one crosslinking promoter; 0 to 2%, preferably 0.2 to 1% of at least one anti-hydrolysis agent, the percentages being by weight of the total weight of the matrix. Also, the use of polymeric matrix in manufacturing electrical cables.

An adhesive for an endoscope, the adhesive including (A) an epoxy resin including at least one epoxy resin of a bisphenol A epoxy resin, a bisphenol F epoxy resin, or a phenol novolac epoxy resin, (B) a curing component including at least one of a phosphorus-containing compound, a polythiol compound, a dicyandiamide compound, a phenol compound, or a polyether-polyamine compound, and (C) an inorganic amphoteric ion exchanger; and a cured product of the adhesive. An endoscope including the cured product fixed, and a method for producing the endoscope.

A resin composition, including: an ethylene-vinyl acetate copolymer resin as a resin component; an imidazole compound, a phenol compound, and a thioether compound as an antioxidant; and a bromine compound and an antimony compound as a flame retardant, wherein the resin composition has a content of the imidazole compound of 14 to 24 parts by mass, a content of the phenol compound of 1.0 to 2.0 parts by mass, a content of the thioether compound of 0.3 to 0.9 parts by mass, a content of the bromine compound of 15 to 30 parts by mass, and a content of the antimony compound of 5 to 15 parts by mass with respect to 100 parts by mass of a total content of the resin component in the resin composition.

The invention relates to additive mixtures for plastics containing phosphinic acid of the formula (I) as component A, ##STR00001##
wherein R.sub.1 and R.sub.2 mean ethyl, M is Al, Fe, TiO.sub.p or Zn, m means 2 to <4, preferably 2 or 3, and p=(4−m)/2 is a compound selected from the group of Al, Fe, TiO.sub.p or Zn salts of ethylbutylphosphinic acid, dibutylphosphinic acid, ethylhexylphosphinic acid, butylhexylphosphinic acid and/or dihexylphosphinic acid as component B, phosphonic acid salt of formula (II) as component C, ##STR00002##
wherein R.sub.3 means ethyl, Met is Al, Fe, TiO.sub.q or Zn, n means 2 to 3, and q=(4−n)/2, and antimony, tin and/or indium as component D. Polymer compositions containing said additive mixtures are characterized by exceptional flame protection and by very good laser markability or laser weldability.

Certain embodiments are described that are directed to lead free compositions including radiation absorption metals in combination with a polymeric material. In some aspects, a composition includes at least one heavy metal, other than lead, known to have shielding capability against ionizing radiation and at least one polymer, polymer blend or co-polymer. Sheets and articles including the compositions are also described.

The present invention relates to a method of preparing a lead-free radiation shielding sheet with excellent shielding performance not only in a high energy (100 kVp) band but also in a low energy (50 to 80 kVp) band and improved durability of the sheet. bands without containing lead. The radiation shielding sheet of the present invention uses antimony (Sb), which has a high shielding rate even in the low energy band instead of lowering the content of tungsten having a relatively lower shielding rate in the low energy band than in the high energy band, thereby increasing the shielding performance in both high energy (100 kVp) and low energy bands. Further, the radiation shielding sheet of the present invention may increase not only durability, but also elasticity, tearing strength, and tensile strength by mixing additives such as zinc oxide with the rubber.

The invention relates to additive mixtures for plastics containing phosphinic acid of the formula (I) as component A,

##STR00001##

wherein R.sub.1 and R.sub.2 mean ethyl, M is Al, Fe, TiO.sub.p or Zn, m means 2 to <4, preferably 2 or 3, and p=(4m)/2 is a compound selected from the group of Al, Fe, TiO.sub.p or Zn salts of ethylbutylphosphinic acid, dibutylphosphinic acid, ethylhexylphosphinic acid, butylhexylphosphinic acid and/or dihexylphosphinic acid as component B, phosphonic acid salt of formula (II) as component C,

##STR00002##

wherein R.sub.3 means ethyl, Met is Al, Fe, TiO.sub.q or Zn, n means 2 to 3, and q=(4n)/2, and antimony, tin and/or indium as component D. Polymer compositions containing said additive mixtures are characterized by exceptional flame protection and by very good laser markability or laser weldability.

Certain embodiments are described that are directed to lead containing compositions including radiation absorption metals in combination with a polymeric material. In some aspects, a composition includes lead, optionally at least one additional heavy metal known to have shielding capability against ionizing radiation and at least one polymer, polymer blend or co-polymer. Sheets and articles including the compositions are also described.

In a first aspect, the invention is directed to a balloon made from a latex composition comprising latex and a metal or metal alloy. In a second aspect, the invention is directed to a process for making such a latex composition.

The object of the present invention is to provide a highly crystalline polyethylene-2,6-naphthalate composition by achieving high molecular weight of PEN, wherein the polyethylene-2,6-naphthalate composition has greatly improved blow moldability and provides molded products having excellent hue, excellent weathering resistance, and additionally excellent transparency. The above-mentioned problems can be solved by a polyethylene-2,6-naphthalate composition comprising a specific phosphoric acid which is a phosphorus compound, cobalt element derived from a cobalt compound, manganese element derived from a manganese compound, and antimony element derived from an antimony compound, wherein the content of each of the elements simultaneously satisfies the following expressions (1) to (4):
10Co30 mmol %(1)
0.50P/Mn1.28(2)
10Sb25 mmol %(3)
0.60IV1.50 dL/g(4).