The invention relates to silicone resins comprising metallosiloxane which contains Si- O-Metal bonds and borosiloxane containing Si-O-B bonds and potentially Si-O-Si and/or M-O-M and/or B-O-B bonds. It also relates to the preparation of such silicone resins and to their use in thermoplastic or thermosetting organic polymer or rubber or thermoplastic/rubber blends compositions to reduce the flammability or enhance scratch and/or abrasion resistance of the organic polymer compositions. It further relates to coatings made of such silicone resins for scratch resistance enhancement or flame retardant properties.