Abstract:
CURABLE B-STAGE FROM (1) A POLYEPOXIDE WITH AT LEAST ONE CARBOCYCLIC OR HETEROCYCLIC RING (FOR EXAMPLE ARALDIT CY 175, TRIGLYCIDYL ISOCYANURATE OR CASTING RESIN F), (2) A POLYESTER CONTAINING AT LEAST ONE CARBOCYCLIC OR HETEROCYCLIC RING, WITH TERMINAL CARBOXYL GROUPS, WITH THE RATIO OF THE TOTAL CHAIN MEMBERS ZG TO RING MEMBERS ZR HAVING TO BE 2 TO 13, AND WITH THE CHAIN POSSESSING 2-10 RECURRING STRUCTURAL ELEMENTS (FOR EXAMPLE POLYESTERS FROM PHTHALIC ANHYDRIDE AND ETHYLENE GLYCOL 11:10 OR FROM SUCCINIC ACID AND 1,1-BIS(HYDROXYMETHYL)-CYCLOHEXANE 5:4) IN AMOUNTS OF 0.2-0.8 EQUIVALENT PER 1 EPOXIDE EQUILVALENT, AND (3) A POLYCARBOXYLIC ACID ANHYDRIDE CONTAINING A CARBOCYCLIC RING (PHTHALIC ANHYDRIDE, HEXAHYDROPHTALIC ANHYDRIDE) IN AN AMOUNT OF 0.8-0.2 EQUIVALENT PER 1 EPOXIDE EQUIVALENT.
Abstract:
HEAT-CURABLE EPOXIDE RESIN MIXTURES OF (1) A CYCLOALIPHATIC POLYEPOXIDE COMPOUND WHICH POSSESS AT LEAST ONE 1,2-EPOXIDE GROUP LOCATED ON A CARBOCYCLIC FIVEMEMBERED OR SIX-MEMBERED RING, (2) A POLYCARBOXYLIC ACID ANHYDRIDE (0.2-1.1 ANHYDRIDE GROUPS PER 1 EQUIVALENT OF EPOXIDE GROUPS) AND (3) A POLYESTER CONTAINING TERMINAL CARBOXYL AND/OR HYDROXYL GROUPS WHICH IS OBTAINED BY ESTERIFICATION OF ALIPHATIC-CYCLOALIPHATIC HIGHER DICARBOXYLIC ACIDS (MANUFACTURED BY DIMERIZATION OF UNSATURATED MONOMERIC FATTY ACID HAVING 14-24 CARBON ATOMS IN THE MOLECULE, PREFERABLY 16-18, AND OPTIONALLY SUBSEQUENT HYDROGENATION OF SUCH A DIMERIC FATTY ACID) WITH ALIPHATIC DIOLS (0.02-0.4 MOL OF POLYESTER PER 1 EQUIVALENT OF EPOXIDE GROUPS). THE CURING OF THE MIXTURES YIELDS FLEXIBLE, IMPACT-RESISTANT MOULDING, THE MECHANICAL PROPERTIES OF WHICH ARE LARGELY TEMPERATURE-INDEPENDENT.
Abstract:
NEW ADDUCTS CONTAINING EPOXIDE GROUPS ARE FORMED WHEN (1) CYCLOALIPHATIC POLYEPOXIDE COMPOUNDS WHICH POSSES AT LEAST ONE 1,2-EPOXIDE GROUP LOCATED ON A CARBOCYCLIC FIVE-MEMBERED OR SIX-MEMBERED RNG, AND (2) ACID POLYESTERS, OBTAINED BY ESTERIFICATION WITH ALIPHATIC DIOLS, OF ALIPHATIC-CYCLOALIPHATIC HIGHER DICARBOXYLIC ACIDS (PREPARED BY DIMERIZATION OF UNSATURATED MEONOMERIC FATTY ACID HAVING 14 TO 24 CARBON ATOMS IN THE MOELCULE, PREFERABLY 16 TO 18, AND, IF DESIRED OR REQUIRED, SUBSEQUENT HYDROGENATION OF SUCH A DIMERIC FATTY ACID), ARE REACTED AT A ELEVATED TEMPERATURE TO FORM AN ADDUCT 0.1 TO 0.5 AN ELEVATED TEMPERATURE TO FORM AN ADDUCT 0.1 TO 0.5 CARBOXYL GROUP EQUIVALENTS OF THE ACID POLYESTER ARE USED PER 1 EPOXIDE GROUP EQUIVALENT OF THE POLYPOXIDE COMPOUND. CURING OF THESE ADVANCED EPOXIDE COMPOUNDS WITH CARBOXYLIC ACID ANHYDRIDES GIVES FLEXIBLE, IMPACT-RESITANT SHARPED BODIES THE MECHANICAL PROPERTIES OF WHICH ARE LARGELY INDEPENDENT OF THE TEMPERATURE.
Abstract:
COMPOSITION WHICH CAN BE CONVERTED TO RUBBER-ELASTIC PLASTIC PRODUCTS ON WARMING, CHARACTERISED IN THAT THEY CONTAIN LONG-CHAIN POLYESTER-POLYAMIDE-DICARBOXYLIC ACIDS OF FORMULA HO-(CO-R1-NH)N-CO-A-CO-(NH-R1-CO)B-OH WHEREINE R1 REPRESENT A BRANCHED OR UNBRANCHED ALKYLENE RESIUDE HAVING 2 TO 11 CARBON ATOMS IN THE LINAR CHAIN, PREFERABLY THE PENTAMETHYLENE RESIUDE, AND A AND B DENOTE ZERO OR AN INTER, WITH THE SUM (A+B) BEING AT LEAST 1 AND AT MOST 8, AND WHEREIN A DENOTES A BRANCHED OR UNBRANCHED HYDROCARBON CHAIN INTERRUPTED BY AT LEAST TWO ESTER GROUPS -O-COWHEREIN, IN THE STRUCTURAL UNIT OF THE POLYESTER RESIDUE A, THE NUMBER OF CARBON ATOMS IN HYDROCARBON RESIDUES DIVIDED BY THE NUMBER OF OXYGEN BRIDGES IS 3 TO 32, WHEREIN FURTHERMORE THE TOTAL NUMBER OF CARBON ATOMS PRESENT IN HYDROCARBON RESIDUES IN THE RESIUDE A IS AT LEAST 10, AND WHEREIN AT LEAST 1.0 AND A MOST 7.0 EQUIVALENTS OF AMIDE GROUPS PER KG. ARE PRESENT IN THE POLYESTER-POLYAMIDE-DICARBOXYLIC ACID MENTIONED, AND ALSO DIEPOXIDE COMPOUNDS, WITH 0.6 TO 1.2, PREFERABLY 0.8 TO 1.0, EQUIVALENTS OF CARBOXYL GROUPS BEING PRESENT PER 1 EQUIVALENT OF EPOXIDE GROUPS.
Abstract:
WHERE N IS A WHOLE NUMBER, AT LEAST 2, PREFERABLY 2 OR 3, R stands for a n-valent aliphatic residue which may be interrupted by oxygen atoms and A represents the residue of a glycol or of a polyglycol whose terminal hydroxyl groups have been removed, and (2) the diglycidyl ether of a glycol or polyglycol.
An epoxy resin mixture containing (1) the polyepoxide of the formula
Abstract:
A CURABLE COMPOSITION WHICH CAN BE CONVERTED INTO CRYALLINE PLASTICS AT AN ELEVATED TEMPERATURE, CHARACTERIZED IN THAT IT CONTAINS LONG-CHAIN POLYAMIDE-DICARBOXYLIC ACIDS OF THE FORMULA
HOOC-A-COOH
WHERE A REPRESENTS A POLYAMIDE RESIDUE WHICH CONTAINS AT LEAST 2 CARBOXYLIC ACID AMIDE GROUPS AND IN WHICH BRANCHED OR LINEAR ALKYLENE AND/OR ALKENYLENE RESIDUE AL. TERNATE WITH THE CARBOXYLIC ACID AMIDE GROUPS, AS WELL AS DIEPOXY COMPOUNDS AND, IF DESIRED, ALSO ANTIOXIDANTS, AND IN WHICH FOR EVERY EPOXIDE GROUP EQUIVALENT 0.7 TO 1.2, PREFERABLY 0.9 TO 1.0 EQUIVALENT OF CARBOXYL GROUPS IS PRESENT.
Abstract:
Manufacture of high molecular, crosslinked crystalline polyadducts possessing urethane groups, from (a) linear succinic acid butane-1,4-diol polyesters possessing terminal hydroxyl groups and having an average molecular size of about 750 to about 5300, (b) as crosslinking agents, polyhydroxyl compounds containing at least 3 hydroxyl groups, preferably those having a hydroxyl equivalent weight of at most 300, e.g., 3-hydroxymethyl2,4-dihydroxypentane, and (c) diisocyanates, for example hexamethylene-diisocyanate 3,5,5-trimethyl-3-(isocyanato-methyl)cyclohexane-isocyanate-(1), 2,4-toluylene-diisocyanate or 2,6toluylene-diisocyanate, with 0.9 to 1.1 equivalents of isocyanate groups of the isocyanate being employed in each case per 1 equivalent of the total amount of hydroxyl groups of the two components (a) and (b).