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    PRODUCTION OF SWELLABLE AGING-RESISTANT STARCH MALEATE, BIOLOGICALLY DEGRADABLE STARCH MALEATE, AND ITS USE
    1.
    发明专利
    PRODUCTION OF SWELLABLE AGING-RESISTANT STARCH MALEATE, BIOLOGICALLY DEGRADABLE STARCH MALEATE, AND ITS USE 失效

    公开(公告)号：JPH10212302A

    公开(公告)日：1998-08-11

    申请号：JP1113798

    申请日：1998-01-23

    Applicant: DEGUSSA

    Inventor： WOLF HEIKO DR ,  DORN KLAUS DR ,  EURICH THOMAS

    IPC: C08B31/04 ,  A61L15/28 ,  A61L15/60 ,  C08L3/06

    Abstract: PROBLEM TO BE SOLVED: To obtain a starch maleate which is swellable, is biologically degradable, and has a swellability resistant to aging by reacting a swellable starch maleate with at least one mono- and/or polyfunctional nucleophilic compd. by Michael addition reaction. SOLUTION: A starch maleate used is a starch ester having a degree of substitution (the number of substituents per glucose ring) of 0.2-2.0. The use of the starch maleate based on a cold-water-soluble starch is esp. advantageous. An example of the nucleophilic compd. is the one represented by the formula: H-X-R (where X is S or NH; and R is a 1-18C alkyl or a 6-12C aryl), and its salt (e.g. Na2 S) can be advantageously used also. The use of a combination of 0.001-0.5 equivalent of mercaptoethoxyethane with 0.5-0.999 equivalent of mercaptoethanol is esp. advanageous. The reaction is conducted in one-pot at room temp. to 80 deg.C for 10min to 10hr.

    PLASTISOL AND THE USE OF POLYMER AND COPOLYMER FOR PRODUCING THE PLASTISOL
    3.
    发明专利
    PLASTISOL AND THE USE OF POLYMER AND COPOLYMER FOR PRODUCING THE PLASTISOL 失效

    公开(公告)号：JPH11310681A

    公开(公告)日：1999-11-09

    申请号：JP8631699

    申请日：1999-03-29

    Applicant: DEGUSSA

    Inventor： LOEHDEN GERD DR ,  BELIK PAVEL DR ,  DORN KLAUS DR ,  SCHICKEL NATASCHA ,  TRAEBING MAUREN ,  SCHNEIDER GEORG

    IPC: C08K3/00 ,  C08J3/18 ,  C08L33/12 ,  C09D133/12

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject plastisol having excellent storage stability and low viscosity, capable of forming a film excellent in mechanical and optical properties and useful for flooring materials, floor layers or the like by compounding a specific (meth) acrylate polymer with a softener and an inorganic filler. SOLUTION: This plastisol is prepared by compounding (A) 100 pts.wt. of a (meth)acrylate (co)polymer having a weight average molecular weight more than 2,000,000 g/mol with (B) 5-400 pts.wt. of a softener compatible with the component A and (C) 9-700 pts.wt. of an inorganic filler. The component A is obtained by subjecting a monomer mixture consisting of 20-100 wt.% of methyl methacrylate (M1 ), 0-80 wt.% of a compound (M2 ) of the formula [R1 is H or methyl; R2 is a (branched) 1-18C alkyl] other than the monomer M1 , 0-40 wt.% of a monomer (M3 ) other than the monomers M1 and M7 , and 0-40 wt.% of an adhesivity imparting monomer (M4 ), wherein the total of the monomers M1 to M4 is 100 wt.%, to polymerization such as emulsion polymerization.

    STABILIZATION OF POLYACETAL
    4.
    发明专利
    STABILIZATION OF POLYACETAL 失效

    公开(公告)号：JPH1087958A

    公开(公告)日：1998-04-07

    申请号：JP23359097

    申请日：1997-08-29

    Applicant: DEGUSSA

    Inventor： KELLER BRUNO DR ,  SCHAUHOFF STEPHANIE DR ,  DORN KLAUS DR ,  DIETRICH MICHELCHEN ,  HARTMUT ALT

    IPC: C08K5/13 ,  C08K5/134 ,  C08L59/00

    Abstract: PROBLEM TO BE SOLVED: To efficiently carry out stabilization of a polyacetal subjected to oxidative decomposition and obtain a high-quality molding material, by mixing the polyacetal with a specific sterically hindering phenol ester of dialkylene glycol in an acting amount. SOLUTION: A polyacetal such as polyoxymethylene is mixed with preferably 0.05-2wt.% (based on polyacetal) sterically hindering phenol ester of dialkylene glycol represented by the formula to stabilize the polyacetal subjected to oxidative decomposition according to ordinary method.

    Copolymers for preparing cast glass, or molding materials for preparing heat stable shaped articles
    7.
    发明专利
    Copolymers for preparing cast glass, or molding materials for preparing heat stable shaped articles 未知

    公开(公告)号：GR3031083T3

    公开(公告)日：1999-12-31

    申请号：GR990402166

    申请日：1999-08-26

    Applicant: DEGUSSA

    Inventor： SCHWIND HELMUT DR ,  HAUCH DIRK ,  HASSKERL THOMAS DR ,  DORN KLAUS DR ,  HOEPP MATHIAS DR

    IPC: C08F2/02 ,  C08F24/00 ,  C08F218/00 ,  C08F224/00

    Abstract: Copolymers (CP) for the prodn. of cast glass or for moulding materials with high heat distortion temp. are obtd. by copolymerisation of (A) exo-methylene-lactone(s) of formula (I); with (B) unsatd. vinyl monomer(s) or different exo-methylene-lactones of formula (I). The claim does not include copolymers of alpha -methylene- gamma -butyrolactone with acrylonitrile, styrene, MMA or difunctional methacrylates, or copolymers of alpha -methylene- delta -valerolactone and styrene. Also claimed are (i) cast glass with low heat distortion, obtd. by bulk polymerisation of a syrup contg. (A) and (B) in an oven-type furnace; and (ii) mouldings with a high heat distortion pt., contg. copolymers (CP). In (I), n = 0 or 1; m = 0 or 1; n+m = 1 or 2; X and X are each =CH-R or two single-bonded gps. R and R ; one of the X gps. must be =CH-R and, if X is =CH-R , the sum of n+m must be 1; and R -R are each H, halogen or 1-7C alkyl (linear or branched, opt. contg. N, P or S hetero atoms and opt. substd. with alkoxy, halogen and/or carbonyl gps.), two of these R gps. may form a 5- or 6-membered ring.

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