Coating compositions having improved scratch resistance, coated substrates and methods related thereto

A composition formed from components comprising:

• (a) at least one polysiloxane comprising at least one reactive functional group, the polysiloxane comprising at least one of the following structural units (I):
• R1nR2mSiO(4−nm)/2 (I)
• wherein each R1, which may be identical or different, represents H, OH, a monovalent hydrocarbon group or a siloxane group;
• each R2, which may be identical or different, represents a group comprising at least one reactive functional group, wherein m and n fulfill the requirements of 0<n<4, 0<m<4 and 2≦(m+n)<4;
• (b) at least one reactant comprising at least one functional group that is reactive at least one functional group selected from the at least one reactive functional group of the at least one polysiloxane and at least one functional group of at least one reactant;
• and
• (c) a plurality of particles,
• wherein each component is different, and
• wherein a retained scratch resistance value of the composition when cured is greater than a retained scratch resistance value of a composition when cured that does not contain the plurality of particles wherein each component is different.

A composition formed from components comprising:

• (a) a polysiloxane comprising at least one reactive functional group, the polysiloxane comprising at least one of the following structural units (I):
• R1nR2mSiO(4−n−m)/2 (I)
• wherein each R1 which may be identical or different represents H, OH, a monovalent hydrocarbon group or a siloxane group;
• each R2, which may be identical or different, represents a group comprising at least one reactive functional group;
• wherein m and n fulfill the requirements of 0<n<4, 0<m<4 and 2<(m+n)<4;
• and
• provided that when the polysiloxane is a partial condensate of a silanol, then less than 70% by weight of the partial condensate is the partial condensate of CH3Si(OH)3;
• and
• (b) a plurality of particles having an average particle size of less than 100 nanometers prior to incorporation into the composition, wherein each component is different.

A powder composition formed from components comprising:

• (a) at least one surface active agent comprising:
• (i) at least one polysiloxane comprising at least one reactive functional group, the at least one polysiloxane comprising at least one of the following structural units (I):
• R1nR2mSiO(4−n−m)/2 (I)
• wherein each R1, which may be identical or different, represents H, OH, a monovalent hydrocarbon group or a monovalent siloxane group;
• each R2, which may be identical or different, represents a group comprising at least one reactive functional group, wherein m and n fulfill the requirements of 0<n<4, 0<m<4 and 2≦(m+n)<4;
• and
• (ii) at least one polyacrylate surface active agent having at least one functional group selected from amino and hydroxyl functionality, acid functionality and acid and hydroxyl functionality;
• and
• (b) a plurality of particles;
• wherein each component is different.