41.
    发明专利
    未知

    公开(公告)号:DE4441189A1

    公开(公告)日:1996-05-23

    申请号:DE4441189

    申请日:1994-11-18

    Applicant: BASF AG

    Abstract: The invention concerns a process for preparing fine-particle mixtures comprising between 97 and 10 wt % of at least one amphiphilic polymer whose softening temperature is above 35 DEG C, and between 3 and 90 wt % of at least one inorganic solid having a particle size of up to at most 500 mu m. According to this process the two components are heated to a temperature which is above the softening temperature of the polymer. The two components are then mixed, broken down in the molten state and rapidly cooled, to a temperature at which practically no separation occurs. The particles are optionally broken down further at temperatures of less than 50 DEG C such that the particle size is between 50 mu m and 5 mm. The invention further concerns the use of these mixtures as detergent additives.

    42.
    发明专利
    未知

    公开(公告)号:DE4440858A1

    公开(公告)日:1996-05-23

    申请号:DE4440858

    申请日:1994-11-15

    Applicant: BASF AG

    Abstract: Biodegradable polyesters P1 obtainable by the reaction of a mixture consisting essentially of (a1) a mixture essentially of 35 to 95 mol% adipic acid or ester-forming derivatives thereof or mixtures thereof, 5 to 65 mol% terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and 0 to 5 mol% of a sulphonate group-containing compound in which the sum of the individual mol percentages is 100, and (a2) a dihydroxy compound selected from the group consisting of C2-C6 alkane diols and C5-C10 cycloalkane diols, in which the molar ratio of (a1) and (a2) is in the range from 0.4:1 to 1.5:1, provided that the polyester P1 have a molecular weight (Mn) in the range from 5000 to 50,000 g/mol, a viscosity index in the range from 30 to 350 g/ml (measured in o-dichlorobenzole/phenol (in a ratio by weight of 50/50) at a concentration of 0.5 wt.% polyester P1 at a temperature of 25 DEG C) and a melting point in the range from 50 to 170 DEG C, and with the further proviso that from 0.01 to 5 mol% in relation to the molar quantity of the component (a1) used of compound D with at least three groups capable of forming esters are used to produce the polyesters P1, and other biodegradable polymers and thermoplastic moulding compounds and adhesives, biodegradable mouldings, foams and blends with starch obtainable from the polymers or moulding compounds of the invention.

    44.
    发明专利
    未知

    公开(公告)号:DE4428596A1

    公开(公告)日:1996-02-15

    申请号:DE4428596

    申请日:1994-08-12

    Applicant: BASF AG

    Abstract: Disclosed is a method for producing condensation polymers of aspartic acid by means of condensation polymerization of aspartic acid at temperatures above 140 DEG C in the presence of catalyst mixtures of potassium and sodium hydrogen sulfate, the melting points of which are at most 200 DEG C, and the use of resulting products, neutralized with alkali metal bases, as additives in low-phosphate and phosphate-free detergents and cleaners.

    45.
    发明专利
    未知

    公开(公告)号:DE4424818A1

    公开(公告)日:1996-01-18

    申请号:DE4424818

    申请日:1994-07-14

    Applicant: BASF AG

    Abstract: A low viscosity mixt. contains (i) 40-97.5 wt.% of amphiphilic nonionic graft polymer contg.(a) at least 20 wt.% of polyalkylene oxide units or polyvinylpyrrolidone units as the hydrophilic part of the molecule and (b) at least 40% of vinyl ester and/or (meth)acrylic ester units as the hydrophobic part of the molecule, (ii) 2.5-60% of polyalkylene glycol,alkoxylated alcohol, alkylphenol or amine, or 2-10C cpd. with 1-4 OH gps., when Mn of the polymers is not above 2500, as viscosity reducer, and (iii) 0-40% of homogenising or phase stabilising additive comprising (1) water, (2) an 8-25C mono- or di-basic acid, fatty alcohol sulph(on)ate, alkylbenzene sulphonate, sulphonation and/or sulphation prod. of 8-22C alkoxylated alcohol or alkylphenol, alkyl(poly)glucoside with 1-20C in the alkyl gp., mono-, oligo- or poly-saccharide or derivs. obtd. by oxidn. or redn., or (c) mixts. of (1) and (2) in ratio by wt. of 100:1-20:80.

    46.
    发明专利
    未知

    公开(公告)号:DE4311854A1

    公开(公告)日:1994-10-13

    申请号:DE4311854

    申请日:1993-04-10

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP94/00982 Sec. 371 Date Oct. 10, 1995 Sec. 102(e) Date Oct. 10, 1995 PCT Filed Mar. 29, 1994 PCT Pub. No. WO94/24254 PCT Pub. Date Oct. 27, 1994Use of carboxyl-containing reaction products of (a) maleic anhydride, maleic acid and/or fumaric acid, and (b) proteins or protein hydrolyzates having an acid number of at least 1.5 mmol of NaOH/g of reaction product, as ingredient of reduced-phosphate and phosphate-free detergents and cleaners.

    Epoxy] resin mixts. with improved rheological properties - contain polyfunctional epoxide(s), nitrogen-contg. hardener, resin-soluble thermoplastic or rubber, and microfine silica

    公开(公告)号:DE4217509A1

    公开(公告)日:1993-12-02

    申请号:DE4217509

    申请日:1992-05-27

    Applicant: BASF AG

    Abstract: Resin mixts. (I) contain (A) 100 pts.wt. polyfunctional epoxy cpd(s)., (B) 2-206 pts.wt. N-contg. hardener, (C) 3-30 pts.wt. thermoplastic or rubber which is soluble in (A), and (D) 0.3-10 pts.wt. finely divided silica. Pref., (B) is an aromatic diamine or dicyandiamide and thermoplastic (C) is a polyether-sulphone; (D) has specific surface (BET) 50-500 m2/g and particle size 5-50 nm, and is pref. hydrophilic silica. Pref., (A) are diglycidyl ethers of Bisphenol A, Bisphenol F or dicyclopentadienylphenol (e.g., DER 332, Epikote 828, Araldite PY 306, Tactix 556, etc. (RTM)), Araldite MY 721 (RTM: tetraglycidyldiaminodiphenylmethane), triglycidyl-p-amino-phenol or triglycidyltriphenylmethane). (B) is, e.g., 4,4'-diamino-diphenylsulphone (DDS) or dicyandiamide, (C) is polyether-sulphone, (D) is Cab-O-Sil M5 or Aerosil 200 (RTM). USE/ADVANTAGE - Epoxy resin mixts. are used for the prodn. of prepregs for fibre-reinforced composites. Mixts. have improved rheological properties, i.e., relatively constant high viscosity under curing conditions (so that the resin does not run out) combined with a sufficiently low viscosity for the impregnation stage.

    48.
    发明专利
    未知

    公开(公告)号:DE3766990D1

    公开(公告)日:1991-02-07

    申请号:DE3766990

    申请日:1987-02-09

    Applicant: BASF AG

    Abstract: In the process, a mixture of bismaleimide and aminophenol is heated in the presence of an amine as addition catalyst and in the presence of an inhibitor, vinyl or allyl monomers and, if desired, epoxy resins and peroxide initiators are added, and the mixture, as a melt, is applied to reinforcing fibres. The prepregs and semifinished products can be cured to form composite materials for the automotive and aerospace industries.

    PROCESS FOR THE PREPARATION OF ESTERS OF (METH)-ACRYLIC ACID, AND THEIR USE

    公开(公告)号:DE3476535D1

    公开(公告)日:1989-03-09

    申请号:DE3476535

    申请日:1984-04-30

    Applicant: BASF AG

    Abstract: 1. A process for preparing an ester of acrylic or methacrylic acid with a hydroxyl-containing organic compound, which comprises esterifying a saturated polyester which contains no fewer than 2 free hydroxyl groups per molecule and may contain ether groups or a saturated polyether which contains no fewer than 2 free hydroxyl groups per molecule, this polyester or polyether having an average molecular weight ~Mn of from 400 to 4,000, with from 100 to 150 mol %, based on the OH groups of the polyester or polyether, of acrylic acid or methacrylic acid in the presence of an acidic esterification catalyst and one or more hydrocarbons forming an azeotropic mixture with water and a small amount of a polymerization inhibitor at elevated temperature with azeotropic removal of the resulting water, after the esterification removing the hydrocarbon by distillation and after neutralization of the esterification catalyst reacting the remaining acrylic or methacrylic acid with an amount, equivalent to the acid number, of an epoxy compound having no fewer than two epoxy groups per molecule until an acid number =

Patent Agency Ranking