A method of introducing an additive, for example a dye, into a polymeric material comprises using a liquid formulation comprising the additive, a vehicle and an active compound added to increase the melt viscosity of the polymeric material. The active compound may be a multi-functional anhydride. The liquid formulation is suitably contacted with the polymeric material in a melt processing apparatus and suitably a cavity transfer mixer is used in the process. A fibre is suitably subsequently produced.
申请公布号
WO2012085548(A3)
申请公布日期
2012.08.23
申请号
WO2011GB52516
申请日期
2011.12.19
申请人
COLORMATRIX HOLDINGS, INC.;GOULBOURN, JOHN;OVEREND, ANDREW;LEEMING, JAMES