Abstract:
A method for the production of block copolymers made of polyethyelene terephthalate and a polyamide made of meta-xylylendiamine and adipinic acid, in addition to methods for the production thereof.
Abstract:
The invention concerns biologically degradable polyester amides P1 obtainable through reaction of a mixture consisting essentially of the following: (a1) a mixture consisting essentially of: 35-95 mol % adipic acid or ester-forming derivatives thereof or mixtures thereof, 5-65 mol % terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and 0-5 mol % a compound containing sulphonate groups (the sum of the individual molar percentages is 100); (a2) a mixture consisting essentially of: (a21) 99.5-0.5 mol % a dihydroxy compound chosen from the group comprising C2-C6 alkane diols and C5-C10 cycloalkane diols, (a22) 0.5-99.5 mol % an amino C2-C12 alkanol or an amino-C5-C10 cycloalkanol, (a23) 0-50 mol % a diamino C1-C8 alkane; and (a24) 0-50 mol % a 2,2`-bisoxazoline of general formula (I), in which R is a single bond, a (CH2)q-alkylene group in which q = 2, 3 or 4, or a phenylene group (the sum of the individual molar percentages is 100 and the molar ratio of a1 to a2 is in the range 0.4:1 - 1.5:1). The polyester amides P1 will have a molecular weight (Mn) in the range 4000-40,000 g/mol, a viscosity number in the range 30-350 g/ml (measured in o-dichlorobenzene/phenol (weight ratio 50/50) at a concentration of 0.5 wt.% polyester amide P1 at a temperature of 25 DEG C) and a melting point in the range 50-220 DEG C; and a quantity of a compound D equivalent to 0-5 mol % of the molar quantity of components (a1) must also be used for the production of the polyester amides P1, said compound D having at least three groups capable of ester formation. The invention also concerns other biologically degradable polymers and thermoplastic moulding materials, processes for manufacturing the same, the use thereof for producing biologically degradable moulded articles and adhesives, and biologically degradable moulded articles, foams and blends with starch which can be obtained from the polymers or moulding materials according to the invention.
Abstract:
A continuous anionic polymerisation or copolymerisation process of styrene or diene monomers with alkali metal alkyl as polymerisation initiator is carried out in the presence of a metal alkyl or aryl of an at least bivalent element as reaction speed regulator, preferably in non-isotherm conditions and without a back admixture in a pipe or pipe bundle reactor. A metal alkyl or aryl A of formula R M and a metal alkyl or aryl B of formula R nM in a molar ratio between B and A from 0.1:1 to 500:1 are used. In the formulas, M is Li, Na or K; R is hydrogen, C1-C20-alkyl or C6-C20-aryl or C7-C20-alkyl-substituted aryl; M is an n-valent element of groups 2a, 2b or 3a of the periodic table of elements; and R is hydrogen, halogen, C1-C20-alkyl or C6-C20-alkyl. Also disclosed is a special initiator for the anionic polymerisation which does not contain any Lewis bases. 00000
Abstract:
Disclosed is a method for purifying caprolactam made from lysin by treating caprolactam with an acid or an acidic ion exchanger. Also disclosed is the use for producing high-molecular polyamide (polyamide 6).
Abstract:
Films or plates made of a plastic mixture and capable of being metal-plated are disclosed, comprising, in relation to the total weight of components A, B, C and D, which add up to 100 % by weight: (a) 5-50 % by weight of a thermoplastic polymer as component A; (b) 50-95 % by weight of a metal powder having an average particle diameter ranging from 0.01-100 µm (determined by the method defined in the description), the metal having a more negative normal potential in an acid solution than silver, as component B; (c) 0-10 % by weight of a dispersant as component C; and (d) 0-40 % by weight fibrous or particulate fillers or their mixtures as component D. The elongation at tear of component A (determined by the method defined in the description) is 1.1-100 times higher than the elongation at tear of the plastic mixture comprising components A, B and optionally C and D (determined by the method defined in the description). The tensile strength of component A (determined by the method defined in the description) is 0.5-4 times higher than the tensile strength of the plastic mixture comprising components A, B and optionally C and D (determined by the method defined in the description). Also disclosed are thermoplastic moulding compounds for producing these films or plates that can be metal-plated, a granulate comprising these thermoplastic moulding compounds, stratified composite films or plates and mouldings comprising these films or plates, metal-plated polymer bodies comprising these films or plates, stratified composite films or plates and mouldings, processes for producing these objects, the use of these objects as EMI shieldings and absorbers, dampers or reflectors for electromagnetic radiation, oxygen scavengers, electroconducting components, gas barriers, and decorative elements comprising these objects.
Abstract:
Anionic polymerization is used for the preparation of reaction mixtures comprising homopolymers, copolymers or block copolymers, and of homopolymers, copolymers and block copolymers which comprise acrylates or methacrylates or acrylates and methacrylates, wherein olefinically unsaturated compounds which are not acrylate or methacrylate derivatives are employed as solvent or as solvent component.
Abstract:
Process for preparation of block polymers of polyethylene terephthalate and of the polyamide composed of meta-xylylenediamine and adipic acid, and process for their preparation.
Abstract:
El proceso para la preparacion de poliamidas de peso molecular alto, que comprende hacer reaccionar una poliamida A) a una temperatura de 150 a 350 degree C con un compuesto B) que a esta temperatura de reaccion libera acido isocianico, en donde la concentracion de los grupos finales amino en la poliamida A) usada es mayor que o igual a la concentracion de los grupos finales carboxi.
Abstract:
Process for preparation of block polymers of polyethylene terephthalate and of the polyamide composed of meta-xylylenediamine and adipic acid, and process for their preparation.
Abstract:
The following are claimed: (A) biodegradable polyester P1, preparable by reaction of a mixt. comprising: (a1) a mixt. comprising: (a11) 35-95 mol.% of adipic acid and/or one or more ester-forming derivs. of this, (a12) 5-65 mol.% of terephthalic acid and/or one or more ester-forming derivs. of this, and (a13) 0-5 mol.% of a cpd. contg. sulphonate gps., the total of mol.% in (a11)-(a13) being 100 mol.%; and (a2) a dihydroxy cpd. selected from 2-6C alkane-diols and 5-10C cycloalkane-diols. The molar ratio of (a1) to (a2) is 0.4-1.5:1. In addn., 0.01-5 mol.% (based on the molar amt. of component (a1)) of a cpd. D, which comprises at least three gps. capable of forming ester gps., are also used for prodn. of polyester P1. Polyester P1 has (a) a mol.wt. (Mn) of 5000-50000 g/mol; (b) a viscosity no. of 30-350 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a P1 concn. of 0.5 wt.%); and (c) a m.pt. of 50-170 degrees C. (B) biodegradable polyester P2, preparable by reaction of a mixt. comprising: (b1) mixt. comprising: (b11) 20-95 mol.% of adipic acid and/or one or more ester-forming deriv. of this, (b12) 5-80 mol.% of terephthalic acid and/or one or more ester- forming deriv. of this, and (b13) 0-5 mol.% of a cpd. contg. sulphonate gps., the total of mol.% in (b11)-(b13) being 100 mol.%; (b2) a dihydroxy cpd. as (a2) above; (b3) 0.01-100 wt.% (based on the amt. of component (b1) of a hydroxycarboxylic acid B1 which is of formula (Ia) or (Ib); and (b4) 0-5 mol.% (based on the amt. of component (b1)) of a cpd. D. The molar ratio of (b1) to (b2) is 0.4-1.25:1. Polyester P2 has (a) a mol.wt. (Mn) of 5000-80000 g/mol; (b) a viscosity no. of 30 - 450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a P2 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. p = a whole no. from 1-1500; r = a whole no. from 1-4; G = phenylene, (CH2)k, C(R)H and C(R)HCH2; k = 1-5; R = Me or Et. (C) biodegradable polyester Q1 which have: (a) a mol.wt. (Mn) of 5000-100000 g/mol; (b) a viscosity no. of 30-450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a Q1 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. Q1 are obtained by reaction of a mixt. comprising; (c1) polyester P1 and/or a polyester PWD; (c2) 0.01-50 wt.% (based on (c1)) of a hydroxycarboxylic acid B1; and (c3) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of P1 and/or PWD) of a cpd. D. Polyester PWD is obtainable by reaction of components (a1) and (a2) in a molar ratio of (a1) to (a2) of 0.4-1.5:1. Polyester PWD have: (a) a mol.wt. (Mn) of 5000 - 50000 g/mol; (b) a viscosity no. of 30 - 350 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a PWD concn. of 0.5 wt.%); and (c) a m.pt. of 50-170 degrees C. (D) biodegradable polyesters Q2 which have: (a) a mol.wt. (Mn) of 6000 - 60000 g/mol; (b) a viscosity no. of 30-350 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a Q2 concn. of 0.5 wt.%); and (c) a m.pt. of 50-170 degrees C. Q2 are obtained by reaction of a mixt. comprising: (d1) 95-99.9 wt.% of polyester P1 and/or PWD; and (d2) 0.1-50 wt.% of a diisocyanate C1; and (d3) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of P1 and/or PWD) of a cpd. D. (E) biodegradable polymers T1 which have: (a) a mol.wt. (Mn) of 10000 - 100000 g/mol; (b) a viscosity no. of 30-450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a T1 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. T1 are obtd. by reaction of polyester Q1 with (e1) 0.1-5 wt.% (based on the amt. of Q1) of diisocyanate C1 and (e2) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of Q1 via the polyester P1 and/or PWD) of a cpd. D. (F) biodegradable polymers T2 which have: (a) a mol.wt. (Mn) of 10000 - 100000 g/mol/. (b) a viscosity no. of 30-450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a T2 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. T2 are obtained by reaction of polyester Q2 with (f1) 0.01-50 wt.% (based on the amt. of Q2) of hydroxycarboxylic acid B1 and (f2) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of Q2 via the polyester P1 and/or PWD) of a cpd