摘要:
Microcapsules wherein the capsule wall is formed from an organic polymer (capsule wall polymer for short) and the core of the microcapsules comprises compounds containing carbodiimide groups (carbodiimide compound for short).
摘要:
Microcapsules wherein the capsule wall is formed from an organic polymer (capsule wall polymer for short) and the core of the microcapsules comprises compounds containing carbodiimide groups (carbodiimide compound for short).
摘要:
An aqueous dispersion comprising a polyurethane synthesized from a) organic diisocyanates b) dihydroxy compounds having a molar weight of 500 to 5000 g/mol and comprising no ionic group or group that can be converted to an ionic group c) mono- to trihydric alcohols additionally comprising an ionic group d) if appropriate, further compounds other than a) to c), wherein the polyurethane comprises less than 0.6% by weight of urea groups (calculated with a molar weight of 56 g/mol), the ionic group of c) has been at least partly neutralized with an alkali metal cation, and the reaction of compounds a), b), c), and d) does not take place in the presence of a catalyst containing a metal-carbon bond.
摘要:
Aqueous adhesive comprising a polyurethane and a silane of the formula where R1 to R4 each independently are an organic radical, with the proviso that at least two of the groups R1 to R4 are a hydroxyl or alkoxy group.
摘要:
The use of a film for adhesively bonding two substrates, wherein the film comprises a layer which is composed of more than 30% by weight of a heat-activatable polyurethane (PU layer for short).
摘要:
Aqueous adhesive comprising a polyurethane and a silane of the formula where R1 to R4 each independently are an organic radical, with the proviso that at least two of the groups R1 to R4 are a hydroxyl or alkoxy group.
摘要:
An aqueous dispersion comprising a polyurethane synthesized from a) organic diisocyanates b) dihydroxy compounds having a molar weight of 500 to 5000 g/mol and comprising no ionic group or group that can be converted to an ionic group c) mono- to trihydric alcohols which additionally comprise an ionic group d) if appropriate, further compounds, different from a) to c), wherein the polyurethane comprises less than 0.6% by weight of urea groups (calculated with a molar weight of 56 g/mol), the ionic group of c) is at least partly neutralized with ammonia, and the reaction of compounds a), b), c), and d) does not take place in the presence of an organometallic catalyst.
摘要:
A composited element comprises a substrate composed of a polyolefin and a substrate composed of a polyurethane which are composited together by an adhesive.
摘要:
A description is given of an adhesive comprising two components, the first component comprising at least two different polymers of which at least one contains carboxyl groups. One of the polymers is selected from polymers which are capable of forming crystalline domains and copolymers of ethylene and vinyl acetate, and the second polymer is an amorphous polyurethane, the quantitative weight ratio of first polymer to second polymer being from 2:8 to 8:2. The second component comprises at least one silane compound that is reactive toward carboxyl groups. The adhesive can be used to produce film-laminated moldings for automobile construction which feature high resistance to climatic cycling.