公开(公告)号：DE2914297A1

公开(公告)日：1980-10-16

申请号：DE2914297

申请日：1979-04-09

Applicant: BASF AG

Inventor： KEMPTER FRITZ ERDMANN DIPL CHE ,  SCHUPP EBERHARD DIPL CHEM DR ,  SCHENK HANS-UWE DIPL CHEM DR ,  GULBINS ERICH DIPL CHEM DR

IPC: C08G12/00 ,  C08G12/02 ,  C08G12/46 ,  C08G59/00 ,  C08G59/14 ,  C08G59/40 ,  C08G59/64 ,  C08G65/26 ,  C08K5/29 ,  C09D5/44 ,  C09D163/00 ,  C25D13/06 ,  C08G59/02 ,  C07C91/12 ,  C07C89/02

Abstract: Polyadducts, free from epoxide groups, are obtained from ammonia and epoxide compounds by reacting 1 mole of ammonia with from 1.2 to 2.0 equivalents of epoxide, so that if diepoxide compounds are used products of the general formula (I) are obtained, while if triepoxides and/or tetraepoxide compounds are used, by themselves, or together with diepoxide compounds, products of the general formula II (II) are produced; in these formulae, the E1's are identical or different hydroxyl-containing divalent radicals and the E2's are identical or different hydroxyl-containing trivalent or tetravalent radicals, resulting from the opening of the oxirane rings of epoxide compounds containing two, three or four epoxide groups in the molecule, n1, n3 and n5 are from 0 to 3, n2 and n4 are from 1 to 3 and X is 0 or 1, and one or more of the divalent radicals E1 in the general formlula (II) may or may not be replaced by polyvalent radicals E2. The novel polyadducts can be modified by reaction with aldehydes, ketones, monoepoxide compounds, carboxylic acids, carboxylic acid esters or isocyanates, or by protonation with an acid, and may be used, for example, for the cathodic electrocoating of metallic articles.

公开(公告)号：DE2755907A1

公开(公告)日：1979-06-21

申请号：DE2755907

申请日：1977-12-15

Applicant: BASF AG

Inventor： KEMPTER FRITZ ERDMANN DIPL CHE ,  HARTMANN HEINRICH DIPL CHEM DR ,  GULBINS ERICH DIPL CHEM DR

IPC: C08G18/64 ,  C08G59/62 ,  C09D5/44 ,  C09D163/00 ,  C25D13/06 ,  C09D5/40

Abstract: The parent specification described a lacquer binder for the cathodic electro-dipping lacquering of electrically conducting surfaces comprising a protonated, heat-hardenable reaction prod. (A), free from epoxy gps., prodn. from (a) a Mannich base obtd. from (1) condensed poly-phenol, opt. contg. ether gps., (2) sec. amine (I) contg. 1 hydroxyalkyl gp., or a mixt. of (I) with another sec. amine, and (3) HCHO or a cpd. releasing HCHO, and (b) an epoxy resin. The binder contains 1-40 wt.%, w.r.t. A + B, of (B) a water-insol., nonionic resin, free from epoxy gps. and contg. urethane gps., obtd. by reaction of a partially blocked di- or poly-isocyanate with a polyamidepolyamine with mol.wt. 400-1000 or a reaction prod. of a polyepoxide and not 1 low-mol. cpd. contg. SH and/or OH gps. In this Patent of addn. resin (B) is a capped di- or polyisocyante. Current consumption during electro-lacquering is lower, Fresh coatings have less tendency to redispersion. The binder can be applied at a constant pH of 6.5-10 (7-9). Release of amine during baking is reduced Hard coatings are obtd., resistant to scratching, solvents and salt spray.

公开(公告)号：DE2554080A1

公开(公告)日：1977-06-23

申请号：DE2554080

申请日：1975-12-02

Applicant: BASF AG

Inventor： KEMPTER FRITZ ERDMANN DIPL CHE ,  HARTMANN HEINRICH DIPL CHEM DR ,  GULBINS ERICH DIPL CHEM DR

IPC: B29C37/00 ,  B29C45/00 ,  C08G18/00 ,  C08G18/54 ,  C08G59/00 ,  C08G59/40 ,  C08L63/00 ,  C09D5/44 ,  C09D163/00 ,  C09D175/00 ,  C09D3/72

Abstract: Surface-coating binders based on a reaction product of Mannich bases, obtained from polyhydric phenols, secondary amines and formaldehyde, with epoxy resins. The Mannich bases and/or the epoxy resins carry hydroxyl groups, bonded to aliphatic structures, which have been converted to urethane groups by reaction with partially blocked polyisocyanates. When protonized and diluted with water, the surface-coating binders may be used as cationic electrocoatings.

公开(公告)号：DE2357075A1

公开(公告)日：1975-05-22

申请号：DE2357075

申请日：1973-11-15

Applicant: BASF AG

Inventor： KEMPTER FRITZ ERDMANN DIPL CHE ,  SABELUS GUENTHER DIPL ING DR ,  SPOOR HERBERT DIPL CHEM DR

IPC: C09D5/44 ,  C09D163/00 ,  C09D3/56

Abstract: A resinous binder for varnish substantially free from oxide gps. is prepd. by reacting a Mannich base derived from a condensed phenol (I), a secondary amine (II) and a formaldehyde source, with an epoxide resin contg. 0.6-1.3 epoxide gps. per mol. (I) (I) is pref. of formula (I) (where OH is o or p. to X and X = 1-3C alkylene, SO2, SO or O). (II) comprises at least one sec. amine contg. is not 1 OH gp. with (out) other sec. or prim. amines. For cathodic electro dip-coating of metals, esp. electrical conductors. The resin is easy to manufacture and stable in store. The varnish ionised by acidification is highly bath-stable. Coatings after heat-hardening adhere strongly to substrates and are tough, elastic and scratch resistant.