Abstract: The disclosure relates to a compound of formula wherein Y, X, Ra, Rb, R1 and R2 are defined herein, PVC compositions comprising the compounds disclosed herein, as well as methods for modulating properties of a PVC, including reducing or preventing the formation of observable gas checks in calendered films, or other mechanical properties such as tensile strength and/or glass transition temperature.

Abstract: An extendible golf brush comprising a tether housing, a flexible bent arm for fastening the tether housing to an external article, a tether extendibly contained within the tether housing, a brush member, and a mechanism for removably fastening a second end of the tether to the brush member. A second end of the flexible bent arm may comprise a first hook for engaging a second hook that is fixed to the tether housing. The mechanism for removably fastening the second end of the tether to the brush member may comprise a fastening mouth with a base member and first and second fastening jaws hingedly connected to the base member for capturing the brush member. Distal ends of the first and second fastening jaws can be selectively fastened together by a male member in combination with a female member. The brush member may be fastened directly to the fastening mouth or it may be coupled thereto by a ring. Both plastic and bronze bristles may project from the brush member to provide varied brushing characteristics.