2.
    发明专利
    未知

    公开(公告)号:DE59503547D1

    公开(公告)日:1998-10-15

    申请号:DE59503547

    申请日:1995-11-14

    Applicant: BASF AG

    Abstract: In a process for producing modified rubber moulding materials, a first mixture (A) that contains at least one alkyl acrylate or methacrylate (a) having the general formula (I), in which R stands for a hydrogen atom or a methyl group and R stands for an alkyl group with 1 to 32 carbon atoms, a first monomer (b) with two or more double bonds and optionally a second or several other monomers (c), is in a first step polymerised into a rubber (B), preferably together with free radicals. In a second step, the thus obtained rubber (B) is dissolved into or swollen with a third or several other monomers (d), optionally with admixture of a solvent, and in a third step, the second mixture (C) obtained by dissolving or swelling is polymerised into the modified rubber moulding material (D).

    4.
    发明专利
    未知

    公开(公告)号:DE59505050D1

    公开(公告)日:1999-03-18

    申请号:DE59505050

    申请日:1995-11-14

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/04476 Sec. 371 Date May 12, 1997 Sec. 102(e) Date May 12, 1997 PCT Filed Nov. 14, 1995 PCT Pub. No. WO96/15164 PCT Pub. Date May 23, 1996In the preparation of a rubber-modified molding material, in a first stage, a first mixture (A) contains at least one alkyl acrylate or methacrylate (a) of the formula (I) (I) where R1 is hydrogen or methyl and R2 is alkyl of 1 to 32 carbon atoms, if required a first monomer (b) having two or more double bonds and, if required, also a second monomer (c) or a plurality thereof is polymerized, preferably with free radicals, to give a rubber (B), in a second stage, a third monomer (d) or a plurality thereof is added to the resulting rubber (B) to form a second mixture (C), whereby the rubber (B) is dissolved or swollen in the third monomer (d), with or with the addition of a solvent, and in a third stage, the second mixture (C) formed is polymerized with free radicals to give the rubber-modified molding material (D), and the mixture is reacted at >120 DEG C., during or after this polymerization, with a compound (e) which contains at least two peroxy groups.

    5.
    发明专利
    未知

    公开(公告)号:DE59503546D1

    公开(公告)日:1998-10-15

    申请号:DE59503546

    申请日:1995-11-14

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/04474 Sec. 371 Date May 12, 1997 Sec. 102(e) Date May 12, 1997 PCT Filed Nov. 14, 1995 PCT Pub. No. WO96/15166 PCT Pub. Date May 23, 1996In the preparation of a rubber-modified molding material, in a first stage, a first mixture (A) contains at least one alkyl acrylate or methacrylate (a) of the formula (I) where R1 is hydrogen or methyl and R2 is alkyl of 1 to 32 carbon atoms, at least one first monomer (b) which forms free radicals on thermal decomposition and, if required, a second monomer (c) or a plurality thereof is polymerized, preferably with free radicals, to give a rubber (B), in a second stage, the resulting rubber (B) is mixed with a third monomer (d) or a plurality thereof, preferably dissolved or swollen therein, to form a second mixture (C), and in a third stage, the second mixture (C) is polymerized with free radicals to give the rubber-modified molding material (D).

    6.
    发明专利
    未知

    公开(公告)号:DE59503947D1

    公开(公告)日:1998-11-19

    申请号:DE59503947

    申请日:1995-11-14

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/04477 Sec. 371 Date May 12, 1997 Sec. 102(e) Date May 12, 1997 PCT Filed Nov. 14, 1995 PCT Pub. No. WO96/15168 PCT Pub. Date May 23, 1996In the preparation of a rubber-modified molding material, in a first stage, a first mixture (A) contains at least one alkyl acrylate or methacrylate (a) of the formula (I) (I) where R1 is hydrogen or methyl and R2 is alkyl of 1 to 32 carbon atoms, a compound (b) of the formula (II) R4 is hydrogen or alkyl of 1 to 8 carbon atoms, R5 is hydrogen or methyl and R6 is hydrogen or alkyl of 1 to 10 carbon atoms, preferably hydrogen, and, if required, a first monomer (c) or a plurality thereof is polymerized with free radicals to give a rubber (B), in a second stage, the resulting rubber (B) is mixed with a second monomer (d) or with a plurality thereof, preferably dissolved or swollen therein, to form a second mixture (C), and in a third stage, the second mixture (C) formed by mixing is polymerized with free radicals to give the rubber-modified molding material (D).

    7.
    发明专利
    未知

    公开(公告)号:DE59501857D1

    公开(公告)日:1998-05-14

    申请号:DE59501857

    申请日:1995-06-03

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/02110 Sec. 371 Date Dec. 4, 1996 Sec. 102(e) Date Dec. 4, 1996 PCT Filed Jun. 3, 1995 PCT Pub. No. WO95/33793 PCT Pub. Date Dec. 14, 1995Transparent molded articles having a high-contrast laser inscription thereon are produced from a polymer mixture consisting of A) from 40 to 99% by weight of a polymer of an alkyl ester of (meth)acrylic acid, B) from 1 to 50% by weight of a copolymer of styrene and acrylonitrile having an acrylonitrile content of from 8 to 30% by weight, C) from 0 to 50% by weight of rubber particles, and D) from 0 to 20% by weight of additives and processing auxiliaries, by preparing a transparent molded article from the polymer mixture, and exposing the transparent molded article to laser radiation.

    8.
    发明专利
    未知

    公开(公告)号:DE59305089D1

    公开(公告)日:1997-02-20

    申请号:DE59305089

    申请日:1993-08-16

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP93/02176 Sec. 371 Date Feb. 2, 1995 Sec. 102(e) Date Feb. 2, 1995 PCT Filed Aug. 16, 1993 PCT Pub. No. WO94/04585 PCT Pub. Date Mar. 3, 1994.A process for preparing polyacetals by copolymerization of glyoxylic esters with other copolymerizable monomers in the presence of anionic or cationic polymerization initiators, with or without the introduction of stable end groups and with or without hydrolysis of the copolymerized units of glyoxylic ester present in the copolymer comprises using as monomers cyclic formals derived from diols, homopolymers of formaldehyde, trioxepane or mixtures thereof, although up to 50% by weight of this group of monomers may be replaced by other customary copolymerizable monomers, and the poly(acetal-carboxylate)s thus obtainable are useful as additives in reduced-phosphate and phosphate-free detergents and cleaners, as water treatment agents and as dispersants for finely divided substances.

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