A polyethylene-polypropylene composition obtainable by blending a) 80 to 97 wt.-% of a blend (A) comprising A-1) polypropylene and A-2) polyethylene, wherein the ratio of polypropylene to polyethylene is from 3:7 to 13:7, and wherein blend (A) is a recycled material, which is recovered from a waste plastic material derived from post-consumer and/or post-industrial waste; and b) 3 to 20 wt.-% of a compatibilizer (B) being a heterophasic random copolymer comprising a random polypropylene copolymer matrix phase and an elastomer phase dispersed therein, whereby the heterophasic random copolymer has—a xylene insolubles content (XCI) of from 65 to 88 wt.-% (ISO 16152, led, 25° C.), and—a xylene soluble content XCS of 12 to 35 wt.-% (ISO 16152, led, 25° C.), the XCS fraction having an intrinsic viscosity (measured in decalin according to DIN ISO 1628/1 at 135° C.) of 1.2 dl/g to less than 3.0 dl/g, and—a flexural modulus of from 300 to 600 MPa (ISO 178, measured on injection moulded specimens, 23° C.); whereby the ratio of MFR.sub.2 (blend (A))/MFR.sub.2 (compatibilizer (B)) (ISO1133, 2.16 kg load at 230° C.), is in the range of 0.5 to 1.5.

A polyethylene-polypropylene composition obtainable by blending a) 80 to 97 wt.-% of a blend (A) comprising A-1) polypropylene and A-2) polyethylene, wherein the ratio of polypropylene to polyethylene is from 3:7 to 13:7, and wherein blend (A) is a recycled material, which is recovered from a waste plastic material derived from post-consumer and/or post-industrial waste; and b) 3 to 20 wt.-% of a compatibilizer (B) being a heterophasic random copolymer comprising a random polypropylene copolymer matrix phase and an elastomer phase dispersed therein, whereby the heterophasic random copolymer has—a xylene insolubles content (XCI) of from 65 to 88 wt.-% (ISO 16152, led, 25° C.), and—a xylene soluble content XCS of 12 to 35 wt.-% (ISO 16152, led, 25° C.), the XCS fraction having an intrinsic viscosity (measured in decalin according to DIN ISO 1628/1 at 135° C.) of 1.2 dl/g to less than 3.0 dl/g, and—a flexural modulus of from 300 to 600 MPa (ISO 178, measured on injection moulded specimens, 23° C.); whereby the ratio of MFR.sub.2 (blend (A))/MFR.sub.2 (compatibilizer (B)) (ISO1133, 2.16 kg load at 230° C.), is in the range of 0.5 to 1.5.

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

Methods for recovering monomers from polymers, such as polyurethanes (including thermoset polyurethanes) include heating the polymer to depolymerize the polymer and release the monomer. The monomer may be directly recovered. The polymer may include a poly(β-methyl-δ-valerolactone) (PMVL) block and the monomer recovered may be β-methyl-δ-valerolactone (MVL).

Polyol component(s) for a recyclable polyurethane system is disclosed. The recyclable polyurethane system comprises a polyol component having a structural Formula (I), a polyol component having a structural Formula (II) or a polyol component having a structural Formula III and an isocyanate curing agent. A process(es) for preparing the polyol component having the structural Formula (I), the polyol component having the structural Formula (II) and the polyol component having the structural Formula (III) is also disclosed.

Polyol component(s) for a recyclable polyurethane system is disclosed. The recyclable polyurethane system comprises a polyol component having a structural Formula (I), a polyol component having a structural Formula (II) or a polyol component having a structural Formula III and an isocyanate curing agent. A process(es) for preparing the polyol component having the structural Formula (I), the polyol component having the structural Formula (II) and the polyol component having the structural Formula (III) is also disclosed.

Disclosed herein are methods for reprocessing polyurethane compositions such as polyurethane foams. The method comprises introducing a polyurethane composition into a compounding device, heating the polyurethane composition to an effective bond-exchange temperature, and compounding the polyurethane composition for an effective bond-exchange time.

Disclosed are a resin composition, and prepreg, laminate and copper clad laminate using the same, and degrading method thereof, the resin composition comprising: an epoxy resin, a degradable amine curing agent, a degradable mercaptan curing agent and an inorganic filler. A copper clad laminate manufactured by the resin composition comprises several pieces of stacked prepreg, and copper foil arranged at one side or two sides of stacked prepreg, each of the prepreg comprising a reinforced material and the resin composition adhered thereon after soaking and drying. The present invention mixes the degradable amine curing agent and the degradable mercaptan curing agent to obtain a curing system having an adjustable reaction rate, thus facilitating process control when manufacturing the copper clad laminate, and the manufactured copper clad laminate has high overall performance and is completely degradable, thus recycling and reusing each of the effective components.

A polyester film is provided. The polyester film includes 10 wt % to 100 wt % of a regenerated polyester resin. The regenerated polyester resin includes a physically regenerated polyester resin and a chemically regenerated polyester resin. Based on a total weight of the regenerated polyester resin being 100 wt %, an amount of the chemically regenerated polyester resin is larger than or equal to 5 wt %.