Patent GB-931646-A (GB)
Title: Dyeable polyolefine blends
Inventor: GRENIER JOSEPH MEDERIC
IPC: C08L23/02
Filed: 1961-03-23
Abstract: A shaped article, particularly a fibre or film, comprises a polyolefin having dispersed therein a fusible cellulose ether or a fusible substituted cellulose ether.  Specified polyolefins include polyethylene, especially of density 0,910-0,960 and melt index 0,2-10, and polypropylene especially of density 0,89-0,91 and melt index 0,5-10.  By "fusible" is meant melting at up to 300 DEG C. without serious thermal degradation. Cellulose ethers specified include ethyl, propyl, butyl, hydroxyethyl, hydroxypropyl, hydroxybutyl, benzyl, lauryl, stearyl, oleyl, methyl ethyl, methyl propyl, methyl butyl, methyl hydroxyethyl, methyl hydroxypropyl, methyl hydroxybutyl, methylbenzyl, methyl lauryl, methyl stearyl, methyl oleyl, ethyl propyl, ethyl butyl, ethyl hydroxyethyl, ethyl hydroxypropyl, ethyl hydroxybutyl, ethyl benzyl, ethyl lauryl, ethyl stearyl, ethyl oleyl, propyl butyl, propyl hydroxyethyl, propyl hydroxypropyl, propyl hydroxybutyl, propyl benzyl, propyl lauryl, propyl stearyl, propyl oleyl, butyl hydroxyethyl, butyl hydroxypropyl, butyl hydroxybutyl, butyl benzyl, butyl lauryl, butyl stearyl, butyl oleyl, benzyl hydroxyethyl, benzyl hydroxypropyl, benzyl hydroxybutyl, ethylaminoethyl, ethylaminopropyl, ethylaminobutyl, ethylaminobenzyl, ethylaminolauryl, ethylaminostearyl and ethylamino oleyl ethers of cellulose.  Fusible substituted cellulose ethers specified include the acetate, propionate, butyrate, laurate, stearate and oleate esters of the aforementioned fusible cellulose ethers, and also of methyl cellulose, which is not fusible unless substituted.  The cellulose ether or substituted cellulose ether may have a melting point of 140 DEG -240 DEG C., and is suitably present in a proportion of 5-50% of the total weight, especially 10-15%.  A dispersion may be formed of the polyolefin and the cellulose ether or substituted cellulose ether, melted and shaped, e.g. extruded, to form the shaped article. Fibres so made may be dyed with disperse azoic and vat dyes.ALSO:Filamentary materials comprising a polyolefin having dispersed therein a fusible cellulose ether or fusible substituted cellulose ether, may be dyed by disperse, azoic and vat dyes, especially disperse azo and disperse anthraquinone dyes used for dyeing cellulose acetate and nylon fibres.  Specified polyolefins include polyethylene, especially of density 0,910-0,960 and melt index 0,2-10, and polypropylene, especially of density 0,89-0,91 and melt index 0,5-10.  By "fusible" is meant melting at up to 300 DEG C. without serious thermal degradation.  Cellulose ethers specified include ethyl, propyl, butyl, hydroxyethyl, hydroxypropyl, hydroxybutyl, benzyl, lauryl, stearyl, oleyl, methyl ethyl, methyl propyl, methyl butyl, methyl hydroxyethyl, methyl hydroxypropyl, methyl hydroxybutyl, methylbenzyl, methyl lauryl, methyl stearyl, methyl oleyl, ethyl propyl, ethyl butyl, ethyl hydroxyethyl, ethylhydroxypropyl, ethyl hydroxyl butyl, ethyl benzyl, ethyl lauryl, ethyl stearyl, ethyl oleyl, propyl butyl, propyl hydroxyethyl, propyl hydroxy propyl, propyl hydroxybutyl, propyl benzyl, propyl lauryl, propyl stearyl, propyl oleyl, butyl hydroxyethyl, butyl hydroxypropyl, butyl hydroxybutyl, butyl benzyl, butyl lauryl, butyl stearyl, butyl oleyl, benzyl hydroxyethyl, benzyl hydroxy propyl, benzyl hydroxybutyl, ethylamino ethyl, ethylamino propyl, ethylaminobutyl, ethylamino benzyl, ethylaminolauryl, ethylamino stearyl and ethylamino oleyl ethers of cellulose.  Fusible substituted cellulose ethers specified include the acetate, propionate, butyrate, laurate, stearate and oleate esters of the aforementioned fusible cellulose ethers, and also of methyl cellulose which is not fusible unless substituted.  The cellulose ether or substituted cellulose ether may have a melting point of 140 DEG -240 DEG C., and is suitably present in a proportion of 5-50% of the total weight especially 10-15%.  A dispersion may be formed of the polyolefin and the cellulose ether or substituted cellulose ether, melted, and shaped, e.g. extruded, to form the shaped article.  If an amino substituted fusible cellulose ether is used in the blend with a polyolefin, the resultant shaped structure may be dyed with wool dyes, including neutral, acid and premetallized dyes.  In examples (1) 9:1 polyethylene/methyl cellulose acetate is dyed with 1,4-bis-(methyl-amino)-anthraquinone.  9:1 polypropylene/ethyl cellulose is dyed with (2) C.I. disperse orange 3, (3) a mixture of the disperse dyes Resolene yellow S.R., Artisil orange RFL, and Resolene blue FBL.  (5) 9:1 polypropylene/ethyl hydroxyethyl cellulose is dyed with Artisil orange RFL, (6) 8,5:1,5 polypropylene/methyl cellulose acetate is dyed with Artisil orange RFL, (7) with a large number of other commercially available disperse dyestuffs and (8) with C.I. Vat Green 1, with the azoic dye Naphtol AS-OL coupled with Fast Red and B base.