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    CURING AGENT COMPONENT FOR EPOXY RESIN AND ITS USE
    4.
    发明专利
    CURING AGENT COMPONENT FOR EPOXY RESIN AND ITS USE 失效

    公开(公告)号：JPH10120877A

    公开(公告)日：1998-05-12

    申请号：JP21873597

    申请日：1997-08-13

    Applicant: HOECHST AG

    Inventor： NEUMANN UWE DR ,  GODAU CLAUS

    IPC: C08G59/50 ,  C08L63/00 ,  C08L79/02

    Abstract: PROBLEM TO BE SOLVED: To avoid problems, such as formation of a blushed or spotted surface and insufficient crosslinking, encountered during coating especially at a low temperature and high humidity by using a specified curing agent component as the curing agent for an epoxy resin. SOLUTION: This invention provides an amino-containing curing agent component for an epoxy resin, wherein the amino-containing curing component is a condensate of a di- or poly-hydroxy aromatic compound (A) with a polyamine (B). This component should have a ratio of component A to component B of 10.0:1.0(mol/mol) to 1.0:10.0(mol/mol). Component A is exemplified by 2,2'- or 4,4'-dihydroxydiphenyl or 2,2'- and 4,4'-dihydroxydiphenyl ether. Component B is exemplified by 1,2-diaminoethane or 1,2-diaminopropane.

    AMINE-MODIFIED EPOXY RESIN COMPOSITION
    5.
    发明专利
    AMINE-MODIFIED EPOXY RESIN COMPOSITION 失效

    公开(公告)号：JPH1060079A

    公开(公告)日：1998-03-03

    申请号：JP18866497

    申请日：1997-07-14

    Applicant: HOECHST AG

    Inventor： MARTEN MANFRED ,  GODAU CLAUS

    IPC: C08G18/32 ,  C08G18/58 ,  C08G59/10 ,  C08G59/50 ,  C09D175/04 ,  C09J175/04

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject resin composition capable of developing excellent processability, storage quality, reactivity, flexibility, tear strength, adhesiveness, low-temperature elasticity and useful as an adhesive, etc., by formulating a reaction product of a specific epoxyamine adduct with a polyisocyanate. SOLUTION: This resin composition comprises (A) a compound having two or more 1,2-epoxy groups which is a reaction product of an epoxy-amine adduct obtained by reacting a compound (A1 ) having two or more 1,2-epoxy groups in the molecule with amines (A2 ) which are compounds, etc., of formula I [R is a 1-30C (branched)aliphatic or aromatic hydrocarbon residue, etc., and R and R are each H or R , with the proviso that when R and R are H, R is a group, etc., of formula II (R and R are each R ); amino group is directly not bonded to an aromatic residue; R and R may form a is H] with a polyisocyanate (A3 ) such as an aromatic or cyclic aliphatic acid polyisocyanate, (B) a 1,2-epoxy compound which is the component A1 , etc., and (C) a curing agent and as necessary, further (D) other additive.

    8.
    发明专利
    未知

    公开(公告)号：DE19628409A1

    公开(公告)日：1998-01-22

    申请号：DE19628409

    申请日：1996-07-15

    Applicant: HOECHST AG

    Inventor： MARTEN MANFRED ,  GODAU CLAUS

    IPC: C08G18/32 ,  C08G18/58 ,  C08G59/10 ,  C08G59/50 ,  C09D175/04 ,  C09J175/04 ,  C08L63/02 ,  C08K5/17 ,  C09J163/02

    Abstract: Epoxy resin compositions (ERC), consisting of (A) compounds with at least two 1,2-epoxide groups, comprising epoxide-amine adducts obtained by reacting (A1) compounds with at least two epoxide groups on average, optionally mixed with mono-epoxides, (A2) amine(s) selected from (A21) sterically hindered mono-amines of formula R -C(R )(NH2)-R -NH-R -NH-R (II) and (A23) di-prim. diamines of formula H2N-C(R )(R )-R -C(R )(R )-NH2 (III); and (A3) polyfunctional aromatic, linear, branched or cyclic aliphatic, or aromatic-aliphatic isocyanates with at least 2 isocyanate groups; (B) optionally 1,2-epoxide compounds other than (A1), and/or the unreacted residues of (A1) from the production of (A); (C) hardeners and (D) optionally other additives. In (I)-(III), R = 1-30C (cyclo)aliphatic, araliphatic or aromatic hydrocarbyl, optionally substituted with OH, alkoxy or halogen; R , R = H or R , preferred R is H; the amino groups in (I) are not directly attached to an aromatic ring; if R = R = H, then R = -CHR R (7), -CR R R (8), -CH2-CHR R (9) or -CH2-CR R R (10), with R -R = as for R ; R may also form an optionally substituted cycloaliphatic ring with up to 8C atoms, in which case R = H; R = optionally substituted hydrocarbyl (as for R ) with 2-30C, or (poly)oxyalkylene with 1-200 units; R = optionally substituted hydrocarbyl as for R with 1-20C; at least one carbon directly attached to nitrogen in formula (II) is a sec. or tert. carbon; R -R = H or 1-8C alkyl; R = direct bond, optionally substituted alkylene, or arylene or heteroarylene; at least one of the groups R -R is alkyl if R is a direct bond or linear alkylene, and R can form a cycloaliphatic, aromatic or heteroaromatic ring with R or R and the linking atoms.

    10.
    发明专利
    未知

    公开(公告)号：DE19536608A1

    公开(公告)日：1997-04-03

    申请号：DE19536608

    申请日：1995-09-30

    Applicant: HOECHST AG

    Inventor： PFEIL ARMIN DR ,  DREISCHHOFF DIETER ,  PETRI STEFAN ,  GODAU CLAUS

    IPC: C08G59/04 ,  C08G59/14 ,  C08G59/50 ,  C08J3/03 ,  C08L63/00 ,  C09D163/00 ,  C09K23/52 ,  C09D5/02 ,  B01F17/52 ,  C08J3/24

    Abstract: The use of special condensation prods. (I) as emulsifiers for the prodn. of aq. epoxy resin systems is claimed. These emulsifiers indicate the end of the working time by a sharp increase in viscosity. (I) are condensation prods. of (A) an aliphatic polyol component with a wt.-average mol. wt. (Mw) of 200-20,000, at least 5 wt% of which has a Mw of at least 4000 and (B) an epoxide component contg. at least one epoxide cpd. with at least 2 epoxide gps. and an epoxide gp. content of 500-10,000 mmoles/kg. Also claimed are epoxy resin dispersions contg. (I) and amine hardeners (II) in amts. such that the no. of epoxide gps. z(EP) and the no. of amine H atoms z(H) are in a ratio of (1:0.75)-(1:2.0).

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