This seems to be what most of the leather industry calls them.

see one instance among many:

http://www.teonline.com/textile-chemicals/finishing-chemical...

As I understand it, they are chemicals used in the leather industry.

http://www.cosmos.com.mx/pqs/4fh3.htm

MODIFICADORES DE TACTO
TOUCH MODIFIERS

http://www.cosmos.com.mx/d/d43b.htm?search=modificadores de ...
TOUCH MODIFIERS = Modificadores de tacto

http://www.helachemicals.com
Main activity Somos Una Empresa Dedicada a la Compra y Venta de Productos Químicos para el Acabado de la Piel.
http://www.stoever.com.mx/
Main activity Producir y Comercializar Químicos que Cumplan con los Requerimientos de los Mercados Nacionales e Internacionales. Atendiendo a las Industrias del Cuero y Textil y la Fabricación de Aceites, Recuertientes y Pigmentos para estas Industrias. Siempre ...

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Note added at 14 mins (2010-01-23 13:57:32 GMT)
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The above links are from Mexico.

Creo que "tacto" se refiere a la textura aquí.

Véanse:

TEXTURE MODIFYING AGENT AND BINDER EFFECTS ON THE YIELD, SENSORY ... - [ Traducir esta página ]
that ground beef patties with texture modifying agents had a lower moisture content than patties containing 5% fat and no texture modifying agent. Hams ...
doi.wiley.com/10.1111/j.1745-4557.1995.tb00367.x - SimilaresTexture modifying agents : a manual for the use of alginates, gums ... - [ Traducir esta página ]
Available in the National Library of Australia collection. Format: Book; v, 95 p. : ill. ; 30 cm.
catalogue.nla.gov.au/Record/1547150 - En cachéNut cheese product - Patent 4198439 - [ Traducir esta página ]
de MW Hoover - 1980 - Citado por 2 - Artículos relacionados - Las 2 versiones
The product of claim 2 wherein the texture modifying agent has a capillary melting ... (c) 5 to 15 percent of a texture modifying agent which comprises ...
www.freepatentsonline.com/4198439.html - SimilaresTEXTURE MODIFYING AGENT AND BINDER EFFECTS ON THE YIELD, SENSORY ... - [ Traducir esta página ]
de KS TINNEY - Citado por 2 - Artículos relacionados
To test their binding characteristics, 11 texture modifying agents/binders were added to cure formulations under industry conditions. ...
www3.interscience.wiley.com/journal/119245316/abstract
Effect of Texture Modifiers on the Physicochemical and Sensory ...
de SO Awonorin - 2005
Información del artículo Effect of Texture Modifiers on the Physicochemical and Sensory Properties of Dried Fufu.
dialnet.unirioja.es/servlet/articulo?codigo=1302965 - En cachéTexture Modifier Types - Rayfront User Manual - [ Traducir esta página ]
Textures are used to modify the normal vector on each specific point of a surface. This is normally used to simulate a material surface structure on an ...
www.schorsch.com/rayfront/manual/texdef.html - En caché