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    Improvements in the production of porous plastics on the basis of polyepoxy compounds
    1.
    发明专利
    Improvements in the production of porous plastics on the basis of polyepoxy compounds 未知

    公开(公告)号：GB881257A

    公开(公告)日：1961-11-01

    申请号：GB3905859

    申请日：1959-11-18

    Applicant: BASF AG

    Inventor： PETRI ROLF ,  REINHARD HANS ,  KELLER LOTHAR

    IPC: C08J9/00

    Abstract: Cellular polyepoxides are obtained by foaming up a stable aqueous dispersion of the polyepoxide of 40-85% by weight strength and a hardening agent which has at least two hydrogen atoms capable of reacting with epoxy groups. If the latter are slow reacting foaming is assisted by heating the mixture e.g. up to 50 DEG C. Expanding agents e.g. azos and hydrazides may also be included, and also compounds which add on water with generation of heat e.g. quicklime. Other additions are protective colloids, wetting agents, organic solvents, fillers, plasticizers, dyestuffs, flame proofers and other dispersions e.g. of vinyl or acrylic polymers. Lists of suitable material are given.ALSO:Cellular polyepoxides are obtained by foaming up a stable aqueous dispersion of the polyepoxide of 40 to 85% by weight strength and a hardening agent which has at least two hydrogen atoms capable of reacting with epoxy groups. If the latter are slow reacting foaming is assisted by heating the mixture e.g. up to 50 DEG C. Expanding agents e.g. azos and hydrazides may also be included, and also compounds which add on water with generation of heat, e.g. quicklime, other additives are protective colloids, wetting agents, organic solvents, fillers, plasticizers, dyestuffs, flame proofers, and other dispersions e.g. of vinyl or acrylic polymers. Lists of suitable materials are given.

    Heat stable bonding of materials
    4.
    发明专利
    Heat stable bonding of materials 未知

    公开(公告)号：GB1056597A

    公开(公告)日：1967-01-25

    申请号：GB3396763

    申请日：1963-08-28

    Applicant: BASF AG

    Inventor： REINHARD HANS ,  WOLF HANS ,  KELLER LOTHAR ,  DOTZAUER BERNHARD ,  WILHELM HANS

    IPC: B32B27/00 ,  C08F8/00 ,  C08F20/62 ,  C08F26/06 ,  C08F246/00 ,  C09J133/00 ,  C09J133/06 ,  C09J133/08 ,  C09J157/04

    Abstract: Heat-stable adhesive compositions comprise solutions or dispersions of copolymers of (a) 0.5-30% of ethylenically unsaturated Mannich bases of a ,b -unsaturated amides, or acrylic, methacrylic or other vinyl or allyl compounds containing N-methylol, N-methylol ether, chlorhydrin, epoxy, ethylenimine, isocyanate, or carbonyl chloride groups, with (b) vinyl esters and/or butadiene, and/or esters of 4 or more C-atom alcohols with a ,b -unsaturated carboxylic acids, with or without (c) other ethylenically unsaturated compounds, cross-linking of adhesive coatings of the compositions being wholly or partly achieved by elevated temperature or by the addition of catalysts such as mineral acids, salts, bases, acid donors, amines or metal oxides or hydroxides. The Specification contains extensive lists of suitable monomer constituents of the adhesive polymers. Examples describe, (1-5) a 50% dispersion of a copolymer of (1) n-butyl acrylate and methylol methacrylamide, (2) ethyl hexylacrylate, vinyl chloride, acrylic acid and methylol methacrylamide plus 1 part of ammonium nitrate, (3) ethyl hexylacrylate, acrylonitrile, acrylic acid and methylol methacrylamide methyl ether plus 1 part of ammonium nitrate, (4) butyl acrylate, 3-chloro-1,2-propanediol acrylate-1 and acrylic acid plus caustic potash solution, (5) vinyl propionate and 3-chloro - 1,2 - propanediol - acrylate - 1, (7) an aqueous dispersion of n-butyl acrylate, vinyl acetate, acrylic acid and 3-chloro-1,2-propanediol acrylate-1 plus dilute caustic soda, (8) a 50% aqueous dispersion of a copolymer of methyl acrylate, butyl acrylate and 3-chloro-1,2-propanediol acrylate-1, (10) a 50% aqueous dispersion of a copolymer of ethyl hexyl acrylate, acrylonitrile, 3-chloro-1,2-propanediol acrylate-1, and acrylic acid having a pH of 3-4, (12) a 50% solution in benzene of a copolymer of n-butyl acrylate, and 3-chloro-1,2-propanediol acrylate-1 containing 0.8% of ethylene diamine.

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