Patent ID: 6528560
Filing Date: 2003-03-04
Classification: C08L

Abstract:
A colorless, highly transparent polyamide composition comprising:1 to 99 wt. % of a polyamide (I), including at least one chain selected from the group consisting of the formulas Ia and Ib: &Brketopenst;&Parenopenst;OOCâ€”Xâ€”COO&Parenclosest;a&Parenopenst;HNâ€”Yâ€”NH&Parenclosest;a&Parenopenst;OOCâ€”Zâ€”NH&Parenclosest;b&Brketclosest;câ€ƒâ€ƒ(Ia) &Brketopenst;&Parenopenst;OOCâ€”X1â€”COO&Parenclosest;a1&Parenopenst;HNâ€”Y1â€”NH&Parenclosest;a1&Parenopenst;OOCâ€”Z1â€”NH&Parenclosest;b1&Brketclosest;c1â€ƒâ€ƒ(Ib) whereinX=meta-phenyl, para-phenyl, (CH)2: 4 to 12 CH2 units, cyclohexyl, naphthyl, norbornyl, norbornane-dimethyl, trimethyl-hexamethylene, X1=meta-phenyl, para-phenyl, (CH)2: 2 to 12 CH2 units, cyclohexyl, naphthyl, norbornyl, norbornane-dimethyl, trimethyl-hexamethylene, Y=(CH2): 2 to 12 CH2 units, cyclohexyl, bis(methyl-cyclohexyl)methane, bis(methyl-cyclohexyl)ethane, bis(methyl-cyclohexyl)propane, norbornyl, norbornane-dimethyl, trimethyl-hexamethylene, bis(cyclohexyl)methane, bis-(cyclohexyl)ethane, bis(cyclohexyl)propane, Y1=(CH2): 2 to 12 CH2 units, cyclohexyl, bis(methyl-cyclohexyl)methane, bis(methyl-cyclohexyl)ethane, bis(methyl-cyclohexyl)propane, norbornyl, norbornane-dimethyl, trimethyl-hexamethylene, bis(cyclohexyl)methane, bis-(cyclohexyl)ethane, bis(cyclohexyl)propane, Z=(CH2): 4 to 12 CH2 units, cyclohexyl, bis(methyl-cyclohexyl)methane, bis(methyl-cyclohexyl)ethane, bis(methyl-cyclohexyl)propane, norbornyl, norbornane-dimethyl, Z1=(CH2): 4 to 12 CH2 units, cyclohexyl, bis(methyl-cyclohexyl)methane, bis(methyl-cyclohexyl)ethane, bis(methyl-cyclohexyl)propane, norbornyl, norbornane-dimethyl, trimethyl-hexamethylene and a=0 to 50 mol %, b=0 to 100 mol %, a1=0 to 50 mol %, b1=0 to 100 mol % andthe sum a+a1+b+b1 provides 100 mol %, the sum c+c1 provides 100 wt. %; 99 to 1 wt. % of a partly crystalline polyamide (II), including at least one chain selected from the group consisting of formulas IIa and IIb: &Brketopenst;&Parenopenst;HN-u-COO&Parenclosest;d&Parenopenst;HN-v-COO&Parenclosest;e&Parenopenst;HN-s-NH&Parenclosest;f&Parenopenst;OOC-t-COO&Parenclosest;f&Brketclosest;gâ€ƒâ€ƒ(IIa) &Brketopenst;&Parenopenst;HN-s1-NH&Parenclosest;f1&Parenopenst;C-t1-COO&Parenclosest;f1&Brketclosest;g1â€ƒâ€ƒ(IIb) whereinu=(CH2): 4 to 12 CH2 units, v=(CH2): 4 to 12 CH2 units, s, s1=(CH2): 2 to 12 CH2 units, meta-phenyl, para-phenyl, t, t1=(CH2): 2 to 12 CH2 units, meta-phenyl, para-phenyl and f=0 to 50 mol %, d=0 to 100 mol % f1=0 to 50 mol %, e=0 to 100 mol %, where the sum f+f1+d+e provides 100 mol % andthe sum g+g1 provides 100 weight %; andat least 0.01 parts by weight, based on 100 parts by weight of the polyamides of formulas Ia/Ib, IIa/IIb, of at least one phosphorus compound, chosen from the group consisting of a phosphorous compound according to formula III: [X(Râ€²)nP(O)l(ORâ€³)m]â€ƒâ€ƒ(III) whereinX=H, â€”ORâ€³, 2-pyridyl, â€”NH2, â€”NHRâ€², â€”NRâ€²Râ€³ where X can be bonded to (Râ€²) or directly to P, Râ€²=(CH2)n1 linear or branched, Râ€³=Li, Na, K, H, (CH2)n2 linear or branched, andn=integer between 0 and 5; 1=0, 1, 1.5, 2, 2.5; m=integer between 0 and 3, n1=integer between 1 and 12, n2=1 to 12, andcyclic phosphonic acid anhydride compounds according to formula (IV), &Brketopenst;(R)PO(O)&Brketclosest;nâ€ƒâ€ƒ(IV) whereinn=3, 4, 5, 6, is an alternating â€”Pâ€”Oâ€” heterocycle with 3, 4, 5, 6 (Pâ€”O) units in the ring, R=CH3, C2H5, C3H7, C4H9, isobutyl, 2,2,6,6-tetramethyl-4-piperidyl.