Polymer impregnated backing material, abrasive articles incorporating same, and processes of making and using

A composite backing material comprising:

• a nonwoven stitch bonded fabric impregnated with a first polymer composition,
• a frontfill layer disposed on a first side of the nonwoven fabric;
• and
• a backfill layer disposed on a second side of the nonwoven fabric,
• wherein the first polymer composition comprises a combination of a first phenolic resole resin and a second phenolic resole resin, and
• wherein the back fill layer comprises:
• about 40 wt % to 62 wt % of an acrylic latex resin;
• about 12 wt % to 20 wt % of a phenolic resin;
• and
• about 25 wt % to 40 wt % filler.

A composite backing material comprising:

• a nonwoven stitch bonded fabric impregnated with a first polymer composition,
• a frontfill layer disposed on a first side of the nonwoven fabric;
• and
• a backfill layer disposed on a second side of the nonwoven fabric,
• wherein the first polymer composition comprises a combination of a first phenolic resole resin and a second phenolic resole resin,
• wherein the front fill layer comprises a second polymeric composition comprising
• about 15 wt % to 30 wt % of a first phenolic resole resin;
• about 40 wt % to 55 wt % of a second phenolic resole resin;
• and
• about 25 wt % to 40 wt % of a filler.