Synthetic leather with copper antimicrobial copper

A method for obtaining a composite consisting of a polyvinylchloride matrix, a reinforcing fiber of animal leather and bactericidal nanoparticles

The first main advantage is that with the methodology of the present solution not only the use of recycled leather waste is achieved, which implies changing the method of "throwing" and spending on transport to landfills, but we re-evaluate tanned leather residues from the same tanning companies and use them as reinforcement fibers in the thermoplastic matrix of polyvinyl chloride (PVC), which unlike the PVC or PU "synthetic leather" fabrics present in the current market, They do not contain leather waste, but nevertheless they are used a lot. Therefore, the methodology and formulation of the proposed mixture, as well as by means of the coating technique, a new improved material is obtained which will have a surface similar to that of a natural leather but at the same time present own properties of the plasticized polyvinyl chloride and will result in better characteristics such as strength, support, protection, controlled durability, good acoustic insulation and also, it will be a cooler material compared to common synthetic leathers.

Second, provides a method for obtaining a new composite consisting of a thermoplastic matrix, a reinforcing fiber of animal origin and, bactericidal nanoparticles; that is to say a continuous matrix of polyvinyl chloride (PVC), as a reinforcing filler recycled leather dust and nanoparticles of Cu.

  Third, according to studies to obtain polymer matrix and reinforcement fiber compounds, the different bibliographic sources that have been made from several years ago separately, polymer matrices have been obtained, such as polyvinyl chloride (PVC) plasticized with other types of reinforcing fibers. (glass, cellulose and coconut). Currently, synthetic leathers in the market use polyvinyl chloride (PVC) or polyurethane (PU) thermoplastic polymers in a greater percentage either by different methods or mainly calender and coating techniques, but NO references have been found where they have been added tanned leather waste (rLeather).

For the destination of solid waste from tanned leather through its transformation, since they are used as raw material in the chemical, food, cosmetic, etc. industries. From it you  can obtain converted products such as gelatin, glue, forage, fertilizers, proteins, secondary and / or artificial skins, shampoos, detergents, activated carbon for energy use. In addition, there are patents that mix different proportions of these residues as fillers in polymer matrices such as amino-plastic or ethyl vinyl acetate (VAE), which differentiates the proposed invention, where polyvinyl chloride (PVC) is used as a single matrix ) and copper nanoparticles are added

The advantage is that before the leather waste is used, the recycled particles are screened, in order to obtain the  appropriate mesh size to achieve a homogeneous mixture and subsequently a sheet resistant to mechanical tests. When plastisol is used as a continuous matrix of plasticized PVC, a liquid mixture with viscoelastic properties is obtained, which allows a better interaction with leather dust and copper nanoparticles, resulting in a homogeneous and easy to transform composite mixture; Depending on the resin, it may have a slightly dilatant or pseudoplastic behavior, but it depends to a large extent on the incorporated additives.

A pilot level implementation of synthetic leather laminates containing natural leather dust reinforcement and copper nanoparticles, in a calender type equipment for continuous rolling and winding.

Synthetic leather finishes composed of resin and copper, in coatings of various commercial applications such as coatings of office furniture, coatings
of commercial surfaces, coatings at the level of schools and hospitals

Support and direct application of the methodology in the government's
technology centers, through technology consulting agreements that are
carried out in a strategic alliance. The implementation is the centers that are dedicated to tannery or recovered In small and medium-sized companies agreement is reached through the support of the government's technology centers

We are currently working at the pilot level and in the education sector of
the National University of San Marcos, in the formation of modifications of mechanical properties

Synthetic leather processes generate a large population demand and this is how it generates jobs from a family unit to a formalized company, in principle it is postulated that the transfer is carried out at the university
through a business incubator and formalize a company with destiny
to provide differentiated developments and continuous training, that
take the value of the recollected leather lso as a development for the
future.

The Study Group on Quantum Chemistry and New Materials for Technological
Innovation (QCNMIT), is dedicated for the development of synthesis of Cu, Ag, Cu @ Ag, Cu @ Se, etc. nanoparticles, to disperse them within polymeric matrices such as PET, PVC, PU, developing new materials in wide environments for To ensure the necessary safety requirements, these environments are defined and distributed in two environments.

The technological transfer is linked to the demand and continuous
circulation, based on the revaluation of the product in a niche market
totative. Therefore, we must know if our product or service is based on the margin (few sales, with much profit margin each) or rotation (many sales of litt

Establish networks of support and improvement in design, evaluation of
technological proposals to modify properties and have access to groups
interested in improving the proposal

the main barrier is to have a quantity of micrometric or nanometric copper powder for the revaluation of synthetic leather