FLAME-RETARDANT GRAY POLYAMIDE COMPOSITIONS AND USE THEREOF

    公开(公告)号:US20210363348A1

    公开(公告)日:2021-11-25

    申请号:US16630493

    申请日:2018-07-06

    摘要: The invention relates to flame-retardant polyamide compositions comprising polyamide having a melting point of not more than 290° C. as component A, fillers and/or reinforcers as component B, phosphinic salt of the formula (I) as component C in which R1 and R2 are ethyl, M is Al, Fe, TiOp or Zn, m is 2 to 3, and p=(4−m)/2 compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D phosphonic salt of the formula as component E in which R3 is ethyl, Met is Al, Fe, TiOq or Zn, n is 2 to 3, and q=(4−n)/2 melamine polyphosphate having an average degree of condensation of 2 to 200 as component F, and gray colorant as component G.

    COMPOSITION COMPRISING A POLYESTER-POLYETHER POLYMER, A TRANSITION METAL CATALYST, AND AN ACTIVE MATERIAL

    公开(公告)号:US20210317262A1

    公开(公告)日:2021-10-14

    申请号:US17259604

    申请日:2019-07-08

    摘要: The invention relates to a polymer composition, comprising: a polyether-polyester copolymer, a transition metal catalyst, and an active material that acts on, interacts or reacts with moisture wherein the polyether-polyester copolymer comprises (i) polyether segments wherein at least one polyether segment contains at least one polytetramethylene oxide segment, (ii) polyester segments, (iii) bridging elements of the structure CO-R2-CO—, wherein R2 represents an optionally substituted bivalent hydrocarbon residue consisting of 1 to 100 carbon atoms; (iv) one or two end-caps R1-O—(C2-C4—O—)e-*, wherein R1 is an optionally substituted hydrocarbon residue and e is an integer of from 0 to 1000. The invention also concerns use of the polymer composition as well as an article of manufacture comprising the polymer composition.

    Flame retardant-stabilizer combination for thermoplastic polymers

    公开(公告)号:US11084917B2

    公开(公告)日:2021-08-10

    申请号:US16333228

    申请日:2017-09-06

    摘要: The invention relates to a novel flame retardant-stabilizer combination for thermoplastic polymers, comprising, as component A, from 25 to 99.9% by weight of a phosphinic acid salt of the formula (I) wherein R1, R2 are the same or different and are each C1-C8-alkyl, linear or branched, C6-C18-aryl, C7-C18-arylalkyl or C7-C18-alkylaryl, or R1 and R2 form one or more rings with each other, M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and/or a protonated nitrogen base; m is from 1 to 4; as component B, from 0 to 75% by weight of a synergist or of a phosphorus/nitrogen flame retardant and, as component C, from 0.1 to 30% by weight of telomeric phosphinic acid salts as component D, from 0 to 20% by weight of organo phosphonic acid salt, as component E, from 0 to 5% by weight of phosphonic acid salt, the sum of the components always being 100% by weight, and wherein the angle of repose of said flame retardant-stabilizer combination is between 5° and 45°.

    CATALYST COMPOSITION FOR A POLYESTER MANUFACTURING PROCESS

    公开(公告)号:US20210214491A1

    公开(公告)日:2021-07-15

    申请号:US17213601

    申请日:2021-03-26

    摘要: A catalyst composition for a polyester manufacturing process, comprising a titanium catalyst and/or an antimony catalyst as main catalyst, and either (i) at least one co-catalyst A, or (ii) at least one co-catalyst Band at least one co-catalyst C, or (iii) a combination thereof, and wherein co-catalyst A is selected from the group consisting of a metal salt of an alkyl or an aryl phosphinic acid, or a metal salt of an alkyl or aryl diphosphinic acid, or a combination thereof, and co-catalyst B is selected from the group consisting of an alkyl or aryl phosphinic acid, an alkyl or aryl diphosphinic acid a combination thereof, and co-catalyst C selected from the group of a metal salt, a metal hydroxide or a metal organyl compound.

    Antimony free composition for laser marking thermoplastic compounds

    公开(公告)号:US20210129570A1

    公开(公告)日:2021-05-06

    申请号:US16486854

    申请日:2018-02-20

    摘要: It has been found, that when co-absorbing substances are added to intrinsic laser-absorbing bismuthoxide, the marking performance with a Nd.YAG-laser is improved or at least kept at the same level by reducing the costs. It is suspected, that the co-absorbing additive is not simply adding a contrast to the polymer by carbonizing the surrounding polymer but helping the bismuthoxide to couple the laser radiation and to ease the color change of this additive. This so found effect helps to cheapen the replacement of antimony trioxide and therewith have a safer and more sustainable solution for the current and future technology of laser marking.