Microgel-containing composition
The present invention relates to a composition containing thermoplastic materials and crosslinked microgels that have not been crosslinked by high-energy radiation, to a process for its preparation, to its use in the production of thermoplastically processable molded articles, and to molded articles produced from the composition.
1 . Composition comprising at least one thermoplastic material (A) and at least one microgel (B) based on homopolymers or random copolymers that has not been crosslinked by high-energy radiation.
2 . Composition according to claim 1 , wherein primary particles of the microgel (B) exhibit approximately spherical geometry.
3 . Composition according to claim 2 , wherein variation in diameters of an individual primary particle of the microgel (B), defined as
[(d1−d2)/d1]×100,
wherein d1 and d2 are any two diameters of any desired section of the primary particle and d1>d2, is less than 250%.
4 . Composition according to claim 1 , wherein primary particles of the microgel (B) have an average particle size of from 5 to 500 nm.
5 . Composition according to claim 1 , wherein the microgels (B) comprise at least about 70 wt. % portions that are insoluble in toluene at 23° C.
6 . Composition according to claim 1 , wherein the microgels (B) have a swelling index in toluene at 23° C. of less than about 80.
7 . Composition according to claim 1 , wherein the microgels (B) have glass transition temperatures of from −100° C. to +50° C.
8 . Composition according to claim 7 , wherein t the microgels (B) have a glass transition temperature of greater than about 5° C.
9 . Composition according to claim 1 , wherein the microgels (B) are prepared by emulsion polymerization.
10 . Composition according to claim 1 , wherein the thermoplastic materials (A) have a Vicat softening temperature of at least 50° C.
11 . Composition according to claim 1 , wherein the thermoplastic material (A) is selected from thermoplastic polymers (A1) and thermoplastic elastomers (A2).
12 . Composition according to claim 1 , wherein the thermoplastic material (A) and the microgel (B) have a difference in glass transition temperature is from 0 to 250° C.
13 . Composition according to claim 1 , wherein thermoplastic material (A)/microgel (B) have a weight ration from 1:99 to 99:1.
14 . Composition according to claim 13 , wherein the weight ratio thermoplastic material (A)/microgel (B) is from 10:90 to 90:10.
15 . Composition according to claim 14 , wherein the weight ratio thermoplastic material (A)/microgel (B) is from 20:80 to 80:20.
16 . Composition according to claim 1 further comprising at least one conventional plastics additive.
17 . Composition according to claim 1 , prepared by mixing at least one thermoplastic material (A) and at least one microgel (B) based on homopolymers or random copolymers that has not been crosslinked by high-energy radiation.
18 . Composition according to claim 1 , wherein the microgel (B) contains functional groups.
19 . Process for the preparation of compositions according to claim 1 comprising mixing at least one thermoplastic material (A) and at least one microgel (B) based on homopolymers or random copolymers that has not been crosslinked by high-energy radiation.
20 . Process for the preparation of compositions according to claim 20 , wherein the microgel (B) is prepared before it is mixed with the thermoplastic material (A).
21 . A molded acticle comprising a composition according to claim 1.