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US 9,845,391 B2Granted
Surface treatment of particles and their use
AssigneeEvonik Degussa GmbH
InventorsKathrin Lehmann, Angela Nawracala, Frauke Henning, Christian Mund
Life of this patent
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Abstract
The invention relates to polymer compositions containing inorganic or organic particles which either have been surface-treated before the production of the compositions or are dispersed by special polyether-modified siloxanes through the production of the compositions.
Claims15
A polymer composition, comprising:
- a) a solid particle,
- b) at least one polymer selected from the group consisting of a thermoplast and a duromer,
- c) 0.05 to 10 wt. % based on the total weight of the composition of a compound of formula (I),
- where
- R identically or differently is R1 methyl, or hydroxy,
- R1 identically or differently is a polyether residue of formula (III)
- —Z—(O—CmH2m-(n-1))o—[O-((AO)r—R3]]n (III)
- where
- Z is a branched alkylene residue or an unbranched alkylene residue with 2 to 4 carbon atoms,
- m is from 2 to 4,
- n is from 1 to 3,
- o is from 0 or 1,
- AO is independently an oxyalkylene residue selected from the group consisting of an oxypropylene residue, an oxybutylene residue, and a combination of oxypropylene residue and oxybutylene residue, each of which optionally includes an oxyetheylene residue,
- R3 is hydrogen,
- and with the proviso that in R1 a sum of carbon and oxygen atoms is at least 70,
- with the proviso that r has a value that, taken together with m and n, provides said group R1 with a total number of carbon atoms and oxygens atoms of at least 70,
- a is from 20 to 200,
- b is from 1 to 50,
- with the proviso that if none of residues R is equal to R1, b is at least 3, and
- d) optionally further components.
17 more elements
A process for treating a surface of a primary particle, comprising contacting the primary particle with at least one compound of
- formula (I)
- where
- R identically or differently is R1, methyl or hydroxy,
- R1 identically or differently is a polyether residue of the formula (III)
- —Z—(O—CmH2m-(n-1))o—[O-((AO)r—R3]]n (III)
- where
- Z is a branched alkylene residue or an unbranched alkylene residue with 2 to 4 carbon atoms,
- m is from 2 to 4,
- n is from 1 to 3,
- o is from 0 or 1,
- AO is independently an oxyalkylene residue selected from the group consisting of an oxypropylene residue, an oxybutylene residue, and a combination of oxypropylene residue and oxybutylene residue, each of which optionally includes an oxyethylene residue,
- R3 is hydrogen,
- and with the proviso that in R1 a sum of carbon and oxygen atoms is at least 70,
- with the proviso that r has a value that, taken together with m and n, provides said group R1 with a total number of carbon atoms and oxygens atoms of at least 70,
- a is from 20 to 200,
- b is from 1 to 50,
- with the proviso that if none of the residues R is equal to R1, b is at least 3,
- wherein 0.01 to 2 wt. % of the at least one compound of the formula (I) is contacted with the primary particle, based on a mass of the primary particle to be treated, and the primary particle excludes a titanium dioxide particle, a barium sulphate particle, a zinc sulphide particle, and a lithopone particle.
15 more elements
A polymer composition, comprising:
- a) a solid particle,
- b) at least one polymer, which is a thermoplast selected from the group consisting of polyethylene, polypropylene, polyamide, polystyrene, and blends thereof, or a duromer, which is a silicone resin or a urea resin,
- c) at least one compound of formula (I),
- where
- R identically or differently is R1, methyl, or hydroxy,
- R1 identically or differently is a polyether residue of formula (III)
- —Z—(O—CmH2m-(n-1))o—[O-((AO)r—R3]]n (III)
- where
- Z is a branched alkylene residue or an unbranched alkylene residue with 2 to 4 carbon atoms,
- m is from 2 to 4,
- n is from 1 to 3,
- o is from 0 or 1,
- AO is independently an oxyalkylene residue selected from the group consisting of an oxypropylene residue, an oxybutylene residue, and a combination of oxypropylene and oxybutylene, each of which optionally includes an oxyetheylene residue,
- R3 is hydrogen,
- and with the proviso that in R1 a sum of carbon and oxygen atoms is at least 70,
- with the proviso that r has a value that, taken together with m and n, provides said group R1 with a total number of carbon atoms and oxygens atoms of at least 70,
- a is from 20 to 200,
- b is from 1 to 50,
- with the proviso that if none of the residues R is equal to R1, b is at least 3, and
- d) optionally further components.
17 more elements
Dependencies are inferred from the claim text.