agent and a process for treating organic fibers therewith the bridging agent is obtained from the reaction of a hydrolyzate of a diorganodihalosilane with a primary secondary or tertiary alcohol in which the hydrocarbon group of the alcohol is a saturated or unsaturated branched chain or an unsaturated linear chain and contains from 12 to 28 carbon atoms application_number US 95583478 A description alcohols which may be reacted with the organopolysiloxanes 1 may be represented by the general formula in which r is a saturated or unsaturated branched chain hydrocarbon radical or unsaturated linear hydrocarbon radical having from 12 to 28 carbon atoms examples of suitable alcohols represented by the above formula are isohexacosanol isoeicosanol isohexadecanol 2 butyl octanol 1 2 hexyl decanol 1 2 octyl dodecanol 1 2 butyl decanol 1 6 butyl octanol 2 4 butyl 2 methyl decanol 2 8 hexyldecanol 1 octadecenol 3 7 dimethyl 1 6 octadien 3 ol 2 dedecylhexadecanol 1 and the like organopolysiloxanes 1 which are reacted with the alcohol to form the bridging agent may be represented by the general formula wherein the r 39 radical which may be the same or different represent monovalent hydrocarbons radicals or substituted monovalent hydrocarbon radicals and n is.