摘要:
An expandable pelletized material comprising A) a polymer matrix composed of A1) at least 55% by weight of polyester (based on the entirety of components A1) and A2)) with a total enthalpy of fusion of up to 60 J/g, optionally of one or more melting points in the range from 100 to 300° C. and of one or more glass transition temperatures in the range from 0 to 250° C., and A2) from 0 to 45% by weight (based on the entirety of components A1) and A2)) of one or more thermoplastic polymers different from component A1); B) a physical blowing agent component, and C) optionally further additives is suitable for producing moldable foams for use in the automobile industry, airline industry, construction industry, packaging industry, sports and leisure industry, in transport, in engineering, in lightweight construction, and/or in composite construction.
摘要:
An expandable pelletized material comprising A) a polymer matrix composed of A1) at least 55% by weight of polyester (based on the entirety of components A1) and A2)) with a total enthalpy of fusion of up to 60 J/g, optionally of one or more melting points in the range from 100 to 300° C. and of one or more glass transition temperatures in the range from 0 to 250° C., and A2) from 0 to 45% by weight (based on the entirety of components A1) and A2)) of one or more thermoplastic polymers different from component A1); B) a physical blowing agent component, and C) optionally further additives is suitable for producing moldable foams for use in the automobile industry, airline industry, construction industry, packaging industry, sports and leisure industry, in transport, in engineering, in lightweight construction, and/or in composite construction.
摘要:
The present invention relates to a composite component comprising an unfoamed polymer phase and a foamed phase, and to a process for producing the same.
摘要:
An expandable pelletized material comprising A) a polymer matrix composed of A1) at least 55% by weight of polyamide (based on the entirety of components A1) and A2)) with a crystallinity of up to 30% and if appropriate a melting point in the range from 100 to 340° C. and a glass transition temperature in the range from 0 to 150° C., and A2) from 0 to 45% by weight of one or more thermoplastic polymers that differ from component A1); B) a physical blowing agent composition, and C) optionally further additives, is suitable for producing a moldable foam for use in the automobile industry, airline industry, construction industry, packaging industry, or sports and leisure industry, or in the transport sector, and/or in engineering.
摘要:
The present invention relates to a process for producing moldings comprising (A) at least one lactam, (B) at least one activator, and (C) at least one catalyst, where (A) to (C) proceed through treatments comprising a) mixing of (A), (B), and (C), b) metering of (A), (B), and (C) into an apparatus for producing mixture droplets, and producing mixture droplets, and c) depositing the mixture droplets comprising (A), (B), and (C) on a belt, and d) producing moldings.
摘要:
The present invention relates to a process for producing moldings comprising (A) at least one lactam, (B) at least one activator, and (C) at least one catalyst, where (A) to (C) proceed through treatments comprising a) mixing of (A), (B), and (C), b) metering of (A), (B), and (C) into an apparatus for producing mixture droplets, and producing mixture droplets, and c) depositing the mixture droplets comprising (A), (B), and (C) on a belt, and d) producing moldings.
摘要:
The present invention relates to a process for producing moldings comprising (A) at least one lactam, (B) at least one activator, and (C) at least one catalyst, where (A) to (C) proceed through treatments comprising a) mixing of (A), (B), and (C), b) metering of (A), (B), and (C) into an apparatus for producing mixture droplets, and producing mixture droplets, and c) depositing the mixture droplets comprising (A), (B), and (C) on a belt, and d) producing moldings.
摘要:
In a process for preparing a polyamide based on dicarboxylic acids and diamines in an extruder, a solid mixture comprising a monomer mixture composed of 50 mol % of dicarboxylic acid mixture composed of from 60 to 88 % by weight of terephthalic acid and from 12 to 40% by weight of isophthalic acid, in which up to 20% by weight of the dicarboxylic acid mixture may also be replaced by other dicarboxylic acids, and 50 mol % of hexamethylenediamine which may be up to 20% by weight replaced by other C2-30-diamines, in a corotatory twin-screw extruder for a residence time of from 10 seconds to 30 minutes, is heated to a temperature in the range from 150 to 400° C. while removing steam and if appropriate diamines through venting orifices.
摘要:
What are described are a solution comprising a terpolymer formed from the monomers of components A, B and C, the total amount of which adds up to 100% by weight,a) 5 to 60% by weight of lactams as component A,b) 5 to 60% by weight of equimolar amounts of adipic acid and one or more aliphatic diamines as component B,c) 10 to 70% by weight of equimolar amounts of adipic acid and 4,4′-diaminodicyclohexylmethane (dicycan) as component C,in an aromatics-free solvent system comprising50 to 100% by weight of C1-4-alkanol,0 to 50% by weight of water andnot more than 10% by weight of further aromatics-free solvents,where the total amount of the solvent system adds up to 100% by weight, and a terpolymer formed from the monomers of components A, B and C, the total amount of which adds up to 100% by weight,a) 15 to 40% by weight of lactams as component A,b) 20 to 45% by weight of equimolar amounts of adipic acid and one or more aliphatic diamines as component B,c) 25 to 60% by weight of equimolar amounts of adipic acid and 4,4′-diaminodicyclohexylmethane (dicycan) as component C,excluding terpolymers formed from 30 to 40% by weight of component A, 30 to 40% by weight of component B and 30 to 40% by weight of component C.
摘要:
A process for crosslinking polyamides by reacting a compound of the general formula R1R2C═CR3—X in which R1, R2 and R3 are each independently hydrogen or an organic radical with a lactam A at a temperature of (−30) to 150° C., and then reacting with a lactam B, a catalyst and an activator at a temperature of 40 to 240° C.
摘要翻译:通过使通式为R 1 R 2 C = CR 3 -X的化合物(其中R 1,R 2和R 3各自独立地为氢或有机基团)与内酰胺A在(-30)至150℃的温度下反应来交联聚酰胺的方法。 然后在40〜240℃的温度下与内酰胺B,催化剂和活化剂反应。