Flame proofing fibrous materials - with n-methylol-amido -phosphoric acid esters

    公开(公告)号:DE2147655A1

    公开(公告)日:1973-03-29

    申请号:DE2147655

    申请日:1971-09-24

    Applicant: HOECHST AG

    Abstract: Impregnation of fibrous materials with a hardenable N-methylol phosphorus cpd. and a swellable polymeric aliphatic polyhydroxy cpd., followed by condensation thereof, as in DT 2130432, is improved in that the phosphorus cpd. has the formula: in which R1 and R2 are each H or CH3; alternatively R1 can be -CH2Cl or -CHCl-CH3, whilst R2 is H; a combination of the latter cpds. with the above alkyl esters in a wt. ratio of 2:1 to 2:3 is prefd. because of the increased solubility. Effective, washing-resistant flameproofing is achieved. The materials have 'dry hand'.

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