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    Molding compositions of polyoxymethylenes and glass fibers
    2.
    发明授权
    Molding compositions of polyoxymethylenes and glass fibers 失效
    聚甲基乙烯和玻璃纤维的成型组合物

    公开(公告)号：US3850873A

    公开(公告)日：1974-11-26

    申请号：US33764173

    申请日：1973-03-02

    Applicant: BASF AG

    Inventor： WERTHER H ,  SCHMIDT F ,  WURMB R ,  SCHUETTE W

    IPC: C08L59/02 ,  C08L75/04 ,  C08G41/04

    CPC classification number: C08L59/02 ,  C08L75/04

    Abstract: 1. AN IMPROVED THERMOPLASTIC MOLDING COMPOSITION OF POLYOXYMETHYLENES SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF FORMALDEHYDE AND COPOLYMERS OF FORMALDEHYDE OR TRIOXANE, SAID HOMOPOLYMERS HAVING THERMALLY STABLE END GROUPS AND SAID COPOLYMERS CONTAINING MORE THAN ABOUT 50% OF OXYMETHYLENE GROUPS AND AT LEAST ABOUT 0.1% OF THE COMONOMER HAVING AT LEAST TWO VICINAL CARBON ATOMS, FROM 10 TO 60% BY WEIGHT OF GLASS FIBERS, AND FROM 0.5 TO 10% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE MIXTURE, OF A HIGH MOLECULAR WEIGHT POLYURETHANE EXHIBITING THERMOPLASTIC PROPERTIES, SAID POLYURETHANE HAVING BEEN PREPARED FROM POLYESTERS, POLYETHERS SUCH AS POLYETHYLENEGLYCOL ETHERS, POLYPROPYLENEGLYCOL ETHERS OR POLYACETALS HAVING FREE HYDROXYL END GROUPS AND POLYISOCYANATES USING CHAIN-EXTENDING AGENTS SUCH AS LOW MOLECULAR WEIGHT POLYOLS.

    Production of butanediolformal
    3.
    发明授权
    Production of butanediolformal 失效
    生产丁二醛

    公开(公告)号：US3849444A

    公开(公告)日：1974-11-19

    申请号：US13992271

    申请日：1971-05-03

    Applicant: BASF AG

    Inventor： FUCHS H ,  RICKER E ,  SCHMIDT F ,  SCHWARTZ E ,  SPERBER H

    IPC: C07D17/00

    Abstract: 1. IN A PROCESS FOR THE PRODUCTION OF 1,4-BUTANEDIOLFORMAL WHEREIN A MIXTURE OF BUTANEDIOL-1,4M AN AQUEOUS SOLUTION OF FORMALDEHYDE OT A SUBSTANCE YIELDING FORALDEHYDE, AND AN ACID OR ACID SALT IS HEATED IN A REACTION VESSEL, THE IMPROVEMENT WHICH COMPRISES CONTINUOUSLY (A) HEATING AT THE BOIL A CONSTANT AMOUNT OF SAID REACTION MIXTURE WHICH CONTAINS LESS THAN 1% BY WEIGHT OF A STRONG ACID OR LESS THAN 10% BY WEIGHT OF AN ACID SALT OR A WEAK ACID, (B) EVAPORATING THE PRODUCT OF THE SYNTHESIS FROM THE REACTION MIXTURE AT SUCH A VELOCITY THAT A MEAN RESIDUE TIME IN THE REACTION VESSEL OF LESS THAN 240 MINUTES IS SET UP FOR A REACTION MIXTURE, (C) CONDENSING THE VAPORS OF THE PRODUCT OF THE SYNTHESIS, (D) SEPARATING THE TWO LAYERS WHICH FORM IN A LIQUID CONDENSATE, (E) SUBJECTING THE UPPER LAYER TO TREATMENT WITH ALKALI, PASSING SAID LAYER THROUGH AN EVAPORATOR AND THEREAFTER FRACTIONALLY DISTILLING SAID TREATED LAYER, AND (F) SUBJECTING THE LOWER LAYER TO AZEOTROPIC DISTILLATION AND RECYCLING THE THE DISTILLATE TO THE UNCONDENSED PRODUCT STREAM WHICH LEAVES THE REACTION VESSEL.

    7.
    发明专利
    未知

    公开(公告)号：DK138428C

    公开(公告)日：1979-02-26

    申请号：DK65775

    申请日：1975-02-21

    Applicant: BASF AG

    Inventor： WURMB R ,  SCHMIDT F ,  PETERSEN H

    IPC: C08L59/00 ,  C08G20060101 ,  C08K5/21 ,  C08K7/14 ,  C08L20060101

    Abstract: Thermoplastic molding compositions of polyoxymethylenes and glass fibers and containing from 0.1 to 5.0 per cent, by weight of the total weight of the mixture, of alkoxymethyl ureas having the formula R1OCH2-N-CO-N-CH2OR2 ¦¦ R3R4 where R1 and R2 are the same or different and denote straight-chain or branched-chain alkyl of from 1 to 10 carbon atoms and R3 and R4 denote hydrogen or alkyl, or R3 and R4 are joined together to form a heterocyclic ring with the adjacent ureido group.

    8.
    发明专利
    未知

    公开(公告)号：DK65775A

    公开(公告)日：1975-10-27

    申请号：DK65775

    申请日：1975-02-21

    Applicant: BASF AG

    Inventor： WURMB R ,  SCHMIDT F ,  PETERSEN H

    IPC: C08L59/00 ,  C08G20060101 ,  C08K5/21 ,  C08K7/14 ,  C08L20060101 ,  C08L59/02

    Abstract: Thermoplastic molding compositions of polyoxymethylenes and glass fibers and containing from 0.1 to 5.0 per cent, by weight of the total weight of the mixture, of alkoxymethyl ureas having the formula R1OCH2-N-CO-N-CH2OR2 ¦¦ R3R4 where R1 and R2 are the same or different and denote straight-chain or branched-chain alkyl of from 1 to 10 carbon atoms and R3 and R4 denote hydrogen or alkyl, or R3 and R4 are joined together to form a heterocyclic ring with the adjacent ureido group.

    9.
    发明专利
    未知

    公开(公告)号：SE373861B

    公开(公告)日：1975-02-17

    申请号：SE517371

    申请日：1968-04-17

    Applicant: BASF AG

    Inventor： RICKER E ,  SANDER B ,  SCHMIDT F ,  SCHWARTZ E ,  SPERBER H ,  WILHELM H

    IPC: C08G12/04 ,  C08G12/34 ,  C08L59/02 ,  C08L61/20 ,  C08G37/02 ,  C08G51/60

    Abstract: 1,216,275. Modified urea-formaldehyde condensates for stabilizing polyacetates. BADISCHE ANILIN- & SODA-FABRIK A.G. 19 April, 1968 [21 April, 1967 (2)], No. 18622/68. Headings C3P and C3R. Polycondensates useful as stabilizers of polyacetals against heat are prepared by heating (A) a diamide of a dicarboxylic acid having 4-18 C atoms and (B) an N : N 1 -alkyleneurea having 3-10 C atoms and/or an N : N 1 - distributed urea having alkyl, aryl or aralkyl groups of up to 8 C atoms as substituents with (C) formaldehyde in aqueous acid medium at 50‹-100‹ C., the molar ratio of (C) to (A) plus (B) being 1 to 2 : 1. Suitable starting materials are (A): azelaic, sebacic, decanedicarboxylic diamides, N : N 1 -dimethylsuberamide, adipamide and isophthalamide; (B): N : N 1 -ethylene - and - propylene - ureas, and N : N 1 - dimethyl-, -diethyl-, -dibutyl-, -diphenyl-, -ditolyl- and -methyl-tolyl-ureas. The preferred molar ratio of (A) to (B) is 0À7-1À3 : 1. The formaldehyde (C) may be supplied as paraformaldehyde, trioxane or polyoxymethylene, or in the form of previously made N-methylol derivatives of (A) or (B). H 2 SO 4 , H 3 PO 4 or strongly acid ion exchangers are suitable polycondensation catalysts. The product is preferably neutralized and washed; the viscous aqueous solution may be diluted with e.g. 1 : 3-dioxolane, methanol or methoxyethanol for use in solution, or spray dried. They are suitable for stabilizing mouldable polyacetals, especially those containing at least 80 mol. per cent oxymethylene units, the remaining units being residues of e.g. ethylene oxides, propylene oxide, 1 : 3-dioxolane, 1:3- dioxane, 1:3-dioxacycloheptone or diglycol formal. Conventional phenolic or hydrazone antioxidants may also be added, or secondary aromatic amines, and also pigments and fillers. In Examples stabilizers are prepared from (Example 1-3) isophthalamide, N : N 1 - ethyleneurea and 30% formalin; in Examples 4 and 6 adipamide is used as (A); in Example 8 4-methoxy-5 : 5 dimethyl-N : N 1 -propyleneurea is used as (B). In Example 5 a trioxane (97%) dioxolane (3%) copolymer is stabilized with 0À2% of products of the invention, 0À25% of 2 : 2 1 - methylene - bis (4 - methyl - 6 - t - butylphenol) and 0À02% NaF.

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