中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

13 records (took 0.02 seconds)

    Agents for increasing the wet shape retention of fibrous materials containing or consisting of cellulose and a process using the same
    6.
    发明专利
    Agents for increasing the wet shape retention of fibrous materials containing or consisting of cellulose and a process using the same 未知

    公开(公告)号：GB928326A

    公开(公告)日：1963-06-12

    申请号：GB4557961

    申请日：1961-12-20

    Applicant: BASF AG

    Inventor： GRAEFJE HEINZ ,  PLOETZ ERNST

    IPC: C08F8/00 ,  D06M15/347

    Abstract: Vinyl polymers containing vinyl acyloxymethyl ether units may be prepared by acylating vinyl hydroxymethyl ether polymers which may be obtained by reacting formaldehyde with hydrolysed vinyl ester polymers as described in Specification 924,036. The acylating agent may be the anhydride or acid halides of acetic, propionic, butyric, caproic, lauric, palmitic or stearic acid. Acylation may be complete, or sufficient hydroxymethyl groups may be retained to render the polymers water-soluble. In examples a saponified vinyl acetate polymer which has been reacted with formaldehyde is acylated with (1) acetic anhydride and (3) propionic anhydride in dimethyl formamide. Aqueous or organic solvent solutions or dispersions of the polymers may be used for treating fibrous materials comprising cellulose, e.g. cotton and rayon fabrics to improve the wet shape retention thereof. Such compositions may also comprise acid reacting catalysts, e.g. magnesium chloride, zinc chloride and zinc nitrate; softeners such as N-alkyl ethylene ureas; methylol compounds of urea or cyclic urea derivatives such as ethylene urea, glyoxal monoureine and glyoxal diureine; and emulsifiers such as ethylene oxide adducts of sperm oil alcohols.ALSO:The wet shape retention, particularly crease resistance, of fabrics containing or consisting of cellulose is increased by impregnating with vinyl polymers containing vinyl acyloxymethyl ether units, and heating in the presence of acid reacting substances. The acyl group may be derived from acetic, propionic, butyric, caproic, lauric, palmitic or stearic acid, and the polymer may contain other units, e.g. sufficient vinyl hydroxymethyl ether units to render it watersoluble. The acid reacting substance may be magnesium chloride, zinc chloride or zinc nitrate. Impregnation may be effected with aqueous or organic solvent solutions or dispersions of the polymer which may also contain softeners such as N-alkyl ethylene ureas, and methylol compounds of urea or cyclic urea derivatives such as p ethylene urea, glyoxalmonoureine and glyoxaldiureine. Examples describe the impregnation of (1) cotton fabric and (2) rayon fabric with an aqueous solution of a polymer containing vinyl acetyloxymethyl ether units, sodium carbonate and magnesium chloride; and (3) the impregnation of cotton fabric with an aqueous dispersion of a polymer containing vinyl propionoxymethyl ether units emulsified with an ethylene oxide adduct of sperm oil alcohol, and zinc chloride. Specification 924,036 is referred to.

    Carboxylic acid esters of polyfunctional hydroxymethyl ethers and a process for their production
    10.
    发明专利
    Carboxylic acid esters of polyfunctional hydroxymethyl ethers and a process for their production 未知

    公开(公告)号：GB913865A

    公开(公告)日：1962-12-28

    申请号：GB2623960

    申请日：1960-07-28

    Applicant: BASF AG

    Inventor： PLOETZ ERNST

    IPC: C07C69/003 ,  C07C305/06 ,  C07C305/10 ,  C07C309/09 ,  C07C317/18 ,  C07D295/088 ,  D06M13/224

    Abstract: Carboxylic esters of polyfunctional hydroxymethyl ethers are prepared by reacting 1 mol of an organic compound containing 2 to 6 primary or secondary alcoholic hydroxyl groups with at least 2 mols of formaldehyde or polymerized formaldehyde at an elevated temperature and treating the resultant hemiacetal with at least 2 mols of an acetylating and/or propionylating agent in the absence of water. The initial polyhydroxy compounds may contain nitrogen, oxygen or sulphur as hetero-atoms. Suitable polyhydroxy compounds include those derived from alkanes, alkenes and alkynes which may also contain aldehyde, ether, thioether, sulphone or amino groups. The products of the formulae in which R1 represents an alkyl radical containing 1-20 carbon atoms or a radical of the formula -Z-O-CH2-O-CO-R5, R2 represents an alkyl radical containing 2-4 carbon atoms which may be substituted by a hydroxyl group or by a group of the formula -O-CH2-O-CO-R6, R3, R4, R5 and R6 represent methyl or ethyl radicals, A, B and Z represent alkylene radicals containing 2-4 carbon atoms, and X represents an equivalent of an anion, are claimed per se. The formaldehyde may be added in free form, either anhydrous or in aqueous solution, or in the form of its readily clearable polymers. Inert solvents may be present. The acylation is conducted under anhydrous conditions using acid anhydrides or halides, or ketenes. In Examples (3)-(5), (8), (9) and (12)-(17) using paraformaldehyde and acetic anhydride:- (3) triethylene glycol gives its bis-acetoxymethyl ether; (4) triethanolamine gives the acetate of its triacetyloxymethyl ether; (5) tetraethanolammonium chloride gives its tetraacetyloxymethyl ether; (8) hexaethylene glycol, (9) dihydroxydiethylsulphone, (12) but-2-ene-1, 4-diol, (13) but-2-yne-1,4-diol, (14) n-hexane-1,6-diol and (15) n-hexane-2,4-diol give their respective bis-acetyloxymethyl ethers; (16) and (17) sorbitol gives its tetrahydroxymethyldiacetyloxymethyl and hexaacetyloxymethyl ethers. Using pentaerythritol and acetic anhydride, (1) and (2) formaldehyde, and (7) aqueous formaldehyde, give (1) and (7) the tetraacetyloxymethyl, and (2) the mixed polyacetyloxymethyl, ethers of pentaerythritol. In other examples; (6) paraformaldehyde, propionic anhydride and dimethyldihydroxyethylammonium methosulphate give the bispropionic acid ester of dimethyldihydroxyethylammonium methosulphate bis-hemiacetal; (10) paraformaldehyde and ketene convert ethylene glycol to its bis-acetyloxymethyl ether; (11) paraformaldehyde and acetyl chloride convert butane-1,4-diol to its bis-acetyloxymethyl ether. Many other reagents are specified. The products are used in the treatment of textiles.

Patent Agency Ranking