Thermoplastic compositions include: (a) from about 30 wt % to about 95 wt % poly(methyl methacrylate) (PMMA); and (b) from about 5 wt % to about 70 wt % of a poly(carbonate-siloxane) copolymer having a siloxane content of from about 25 wt % to about 45 wt %. Methods for making a molded article, include: (a) combining from about 30 wt % to about 95 wt % PMMA and from about 5 wt % to about 70 wt % of a poly(carbonate-siloxane) copolymer having a siloxane content of from about 25 wt % to about 45 wt % to form a blend; (b) melt processing and pelletizing the blend; and (c) injection molding the article from the melt processed and pelletized blend.

The present disclosure provides for a polyurethane elastomer foam formed by reacting a mixture that includes 60 to 50 weight percent (wt. %) of a polyol formulation and 40 to 50 wt. % isocyanate pre-polymer (wt. % based on the total weight of the mixture). The polyol formulation includes 85 to 92 wt. % of a polytetramethylene ether glycol (PTMEG) with a weight average molecular weight of 1900 to 2100 and a hydroxyl number of about 53 to about 60; 4 to 10 wt. % of monoethylene glycol; a blowing agent; a catalyst; and a surfactant (wt. % values for the polyol formulation based on the total weight of the polyol formulation). The isocyanate pre-polymer includes 55 to 70 wt. % of a isocyanate blend having at least 90 wt. % of 4,4′-diphenylmethane diisocyanate; and 30 to 45 wt. % of the PTMEG, where the isocyanate pre-polymer has an isocyanate content of 16 to 21 wt. % based on the total weight of the isocyanate pre-polymer, and the polyurethane elastomer foam has a ball rebound of at least 50% measured according to ASTM D3574 on a 10 mm thickness test plate.

The present application discloses a polyol system for preparing polyurethane comprising: i) at least one active chain extender having at least two groups that can react with an isocyanate, wherein at least one group that can react with an isocyanate is free primary —NH2 group; ii) at least one active chain extender having three groups that can react with an isocyanate, wherein at least one group that can react with an isocyanate is free primary —OH group, and iii) at least one polyether polyol starting from an amine. The polyol system according to the present disclosure is phase-stable without layering and capable of releasing mold quickly after reacting with an isocyanate to produce polyurethane.

Curable epoxy resin compositions suitable for liquid resin infusion processes. In one embodiment, the resin composition contains (a) at least two polyepoxides, one of which is triglycidyl ether of tris(hydroxyphenyl)methane, (b) an aromatic amine curing agent, and (c) core-shell rubber particles. In another embodiment, the resin composition (a) at least two polyepoxides, one of which is diglycidyl ether of bis(hydroxyphenyl)fluorene, (b) an aromatic amine curing agent, and (c) core-shell rubber particles.

According to the present invention, provided is a polymerizable composition for an optical material including: at least one amine compound (A) selected from a compound (a1) represented by Formula (1) and a compound (a2) represented by Formula (2); an iso(thio)cyanate compound (B) which contains two or more iso(thio)cyanate groups; and a polythiol compound (C) which contains a dithiol compound (c1) containing two mercapto groups and a polythiol compound (c2) containing three or more mercapto groups. ##STR00001##

According to the present invention, provided is a polymerizable composition for an optical material including: at least one amine compound (A) selected from a compound (a1) represented by Formula (1) and a compound (a2) represented by Formula (2); an iso(thio)cyanate compound (B) which contains two or more iso(thio)cyanate groups; and a polythiol compound (C) which contains a dithiol compound (c1) containing two mercapto groups and a polythiol compound (c2) containing three or more mercapto groups. ##STR00001##

Semicrystalline bifuran polyesters wherein the diacid and/or diol components include bifuran units such as those derived from 2,2′-bifuran-5,5′-dicarboxylic acid (BFA), dimethyl-2,2′-bifuran-5,5′-dicarboxylate (BFE), and/or bis(hydroxyethyl) bifuranoate (BHEB) Polyethylene-BFE (PEBF) having a high ΔH.sub.f and high T.sub.g determined by DSC on the second heating ramp is described. Polybutylene-BFE (PBBF), polyhexylene-BFE (PHBF), polypropylene-BFE (PPBF), etc., are also described. Method for making bifuran polyesters includes melt esterification or transesterification and polycondensation of one or more monomers comprising a diacid component and a diol component, wherein the one or more monomers include a bifuran monomer, such as BFA, BFE, BHEB or BFD. Also described is a method of forming a bifuran polyester prepolymer in the melt, pelletization, crystallization, and solid state polymerization.

Disclosed is an acoustically and thermally effective engine and/or aggregate capsule which completely encloses the engine and/or aggregate.

The present invention relates to the process for manufacturing specialty polyesters & copolyesters from recycled Bis 2-Hydroxyethyl terephthalate (rBHET) derived from Polyethylene terephthalate (PET) recycled from PET scraps or waste. The polyesters/co-polyesters thus obtained are clean and of high quality which can be used for all applications but not limited to textiles, packaging, engineering and industry.

A composite structure comprising a resinous component that is adhered to a surface of a metal component is provided. The resinous component is formed from a polymer composition that comprises a polyarylene sulfide, inorganic fibers, and an impact modifier. The inorganic fibers have an aspect ratio of from about 1.5 to about 10.