Silylated polycarbonate polymers, method of making, and articles formed therefrom
View Patent ↗A silylated polycarbonate comprises silylated carbonate units, where the silylated carbonate units can be derived from a silylated dihydroxy aromatic compound of the formula (1 a ): wherein G a and G b are each independently C 1-12 alkyl, —OSi(C 1-12 alkyl) 3 , C 1-12 arylalkyl, or —OSi(C 1-12 arylalkyl) 3 ; Z a and Z b are each independently a straight or branched C 2-18 alkylene, a C 8-18 arylalkylene, or a C 8-18 alkylarylene, X a is a direct bond, a heteroatom-containing group, or a C 1-18 organic group, and r and s are each independently 1 or 2. A method of forming the silylated dihydroxy aromatic compound, and for forming the silylated polycarbonate, are disclosed. Also disclosed is a thermoplastic composition comprising the silylated polycarbonate, and an article comprising the thermoplastic composition.
1. A silylated polycarbonate comprising
a silylated carbonate unit
wherein the silylated carbonate unit is derived from a silylated isopropylidene-bridged bisphenol of the formula (6):
2. The silylated polycarbonate of claim 1 further comprising an additional carbonate unit derived from a dihydroxy aromatic compound that is not identical to the silylated dihydroxy aromatic compound of formula (1a).
3. The polycarbonate of claim 2 , wherein the additional carbonate unit is derived from a dihydroxy aromatic compound of the formula (8):
wherein R a and R b are each independently C 1-12 alkyl or halogen, X b is a direct bond, a heteroatom containing group, or a C 1-18 organic group, p and q are each independently integers of 0 to 4, and the dihydroxy aromatic compound is not the same as the silylated dihydroxy aromatic compound.
4. The silylated polycarbonate of claim 3 , wherein p is 0 or 1, and X b is
wherein R c and R d are each independently hydrogen, C 1-12 alkyl, cyclic C 1-12 alkyl, C 7-12 arylalkyl, C 1-12 heteroalkyl, or cyclic C 7-12 heteroarylalkyl, and R e is a divalent C 1-12 hydrocarbon group.
5. The silylated polycarbonate of claim 4 , wherein the dihydroxy aromatic compound is bisphenol A.
6. The silylated polycarbonate of claim 2 , where the additional carbonate units are derived from dihydroxy compounds comprising resorcinols, dihydroquinones, hydroxy end-capped oligomeric arylate esters, hydroxyaryl end-capped polysiloxanes, or a combination comprising at least one of the foregoing dihydroxy compounds.
7. A thermoplastic composition comprising the silylated polycarbonate of claim 1 , and an additive.
8. The thermoplastic composition of claim 7 , wherein the additive is an impact modifier, a filler, an ionizing radiation stabilizer, an antioxidant, a heat stabilizer, a light stabilizer, an ultraviolet light absorber, a plasticizer, a lubricant, a mold release agent, an antistatic agent, a pigment, a dye, a flame retardant, an anti-drip agent, or a combination comprising at least one of the foregoing additives.
9. The thermoplastic composition of claim 7 , further comprising an additional polymer, wherein the additional polymer comprises a homopolycarbonate, a copolycarbonate, a polyester, a polyester-polycarbonate, a polysiloxane-polycarbonate, a polysiloxane-polyester-polycarbonate, or a combination comprising at least one of the foregoing additional polymers.
10. A method of manufacture of the silylated polycarbonate of claim 1 , comprising interfacial polymerization of the silylated dihydroxy aromatic compound of formula (6).
11. A method of manufacture of the silylated polycarbonate of claim 1 , comprising melt polymerization of the silylated dihydroxy aromatic compound of formula 1.
12. An article, comprising the silylated polycarbonate of claim 1 .
13. A silylated polycarbonate comprising
1 to 100 mol % of carbonate units derived from a silylated isopropylidene bisphenol of the formula (6):
0 to 99 mol % of carbonate units derived from a dihydroxy aromatic compound of formula (8):
wherein R a and R b are each independently C 1-12 alkyl or halogen, p and q are each independently 0 or 1, and X b is
wherein R c and R d are each independently hydrogen, C 1-12 alkyl, cyclic C 1-12 alkyl, C 7-12 arylalkyl, C 1-12 heteroalkyl, or cyclic C 7-12 heteroarylalkyl, R e is a divalent C 1-12 hydrocarbon group, and the dihydroxy aromatic compound is not the same as the silylated dihydroxy aromatic compound;
wherein each of the foregoing mole percents is based on the total moles of silylated dihydroxy aromatic compound and dihydroxy aromatic compound.
14. A thermoplastic composition comprising the silylated polycarbonate of claim 13 , and an additive.
15. The polycarbonate of claim 13 , wherein the addition carbonate unit is bisphenol A.
16. The thermoplastic composition of claim 14 , further comprising an additional polymer, wherein the additional polymer comprises a homopolycarbonate, a copolycarbonate, a polyester, a polyester-polycarbonate, a polysiloxane-polycarbonate, a polysiloxane-polyester-polycarbonate, or a combination comprising at least one of the foreging additional polymers.