Higher heat degradable polymer alloys

Claim 2

The poly alloy according to Claim 1 characterised by that in component (ii) has a Tg from 75°C to 150°C and a difference in the range of Hildebrand parameters (σ) from those for the polymers of component (i) of not more than 2 MPA 1/2 .

Claim 3

The polymer alloy according to Claim 2 characterised by that in component (i) has a molecular weight of not less than 60,000.

Claim 4

The polymer alloy according to Claim 3, characterised by that in component (i) is present in an amount from 50 to 70 weight % and component (ii) is present in amount from 50 to 30 weight %.

Claim 5

The polymer alloy according to Claim 4 characterised by that in component (ii) is selected from the group of polymers consisting of: (a) polycarbonates; (b) polymers comprising: from 40 to 95 weight % of one or more C₈₋₁₂ vinyl aromatic monomers which are unsubstituted or substituted by a C₁₋₄ alkyl radical; C₁₋₆ alkyl or hydroxy alkyl acrylates or methacrylates; from 5 to 40 weight % of an anhydride of a C₄₋₆ ethylencially unsaturated dicarboxylic acid; from 0 to 50 weight % of one or more C₁₋₆ alkyl or hydroxy alkyl acrylates or methacrylates; (c) polymers comprising: from 100 to 50 weight % of one or more C₁₋₆ alkyl or hydroxyalkyl acrylates or methacrylates; from 0 to 50 weight % of one or more C₈₋₁₂ vinyl aromatic monomers which are unsubstituted or substituted by a C₁₋₄ alkyl radical which polymers have been imidized to at least 10%. (d) polymers of amides of C₃₋₆ ethylenically unsaturated carboxylic acids; (e) polyphenylene ethers; (f) polysulphones; (g) polysiloxanes; and (h) polyimides.

Claim 6

The polymer alloy according to Claim 5, characterised by that said polycarbonate is based on one or more poly phenols selected from the group consisting of hydroquinone, resorcinol and polyphenols of the formula wherein R₁, R₂, R₃, and R₄ are independently selected from the group consisting of a hydrogen atom, a chlorine atom, a bromine atom, and a C₁₋₄ alkyl radical; and X is a bond or divalent radical selected from the group consisting of C₁₋₁₀ alkylene radicals, C₂₋₈ alkenylene radicals, and C₆₋₈ cycloalkylene radicals.

Claim 7

The polymer alloy according to Claim 6 characterised by that said polycarbonate is based on a dipnenol selected from the group consisting of 4,4' dihydroxydiphenyl; 2,2-bis-(4-hydroxyphenyl) propane; 2,4-bis-(4-hydroxyphenyl)-2-methylbutane; 1,1-bis(4-hydroxyphenyl)-cyclohexane; β,β-bis-(4-hydroxyphenyl)-p-diisopropylbenzene; 2,2-bis-(3-chloro-4-hydroxyphenyl)propane; 2,2-bis-(3,5-dichloro-4-hydroxyphenyl) propane.

Claim 8

The polymer alloy according to Claim 5, characterised by that in component (ii) (b) said vinyl aromatic monomer is present in an amount from 40 to 80 weight %; said anhydride is present in an amount from 5 to 35 weight %; and said acrylate is present in an amount from 2 to 30 weight %.

Claim 9

The polymer alloy according to Claim 8, characterised by that said aromatic monomer is selected from the group consisting of styrene, α-methyl styrene and t-butyl styrene; said anhydride is maleic anhydride; and said C₁₋₄ alkyl or hydroxy alkyl acrylate or methacrylate is selected from the group consisting of methyl acrylate, ethyl acrylate, methyl methacrylate and methyl methacrylate.

Claim 10

The polymer alloy according to Claim 3, characterised by that in component (ii) (c) said C₁₋₄ alkyl acrylate or methacrylate is present in an amount from 100 to 70 weight % and said vinyl aromatic monomer is present in an amount from 0 to 30 weight %.

Claim 11

The polymer alloy according to Claim 10, characterised by that said C₁₋₄ alkyl or hydroxy alkyl acrylate or methacrylate is selected from the group consisting of methyl acrylate, ethyl acrylate, methyl methacrylate and methyl methacrylate; and said vinyl aromatic monomer is selected from the group consisting of styrene, α-methyl styrene and t-butyl styrene.

Claim 12

The polymer alloy according to Claim 5 characterised by that in component (ii) d is selected from the group consisting of acrylamide and methacrylamide.

Claim 13

The polymer alloy according to Claim 5 characterised by that in component (ii) e has a backbone comprising recurring units of the formula wherein R₁, R₂, R₃, and R₄ are independently selected from the group consisting of a hydrogen atom, a chlorine atom, a bromine atom, an alkyl radical containing up to 10 carbon atoms, a C₆₋₁₀ aromatic radical which is unsubstituted or substituted by an alkyl radical containing up to 10 carbon atoms, and n is an integer from 300 to 700.

Claim 14

The polymer alloy according to Claim 5 characterised by that in component (ii) e is poly [oxy-2-acetoxytrimethyleneoxy -1,4-phenylenemethyl (phenyl) methyl -1,4 phenylene.

Claim 15

The polymer alloy according to Claim 5 characterised by that in component (ii) f has a backbone comprising recurring units selected from the formula of the group consisting of wherein R₁, R₂, R₃, R₄, R₅, R₆, R₇, and R₈ are independently selected from the group consisting of a hydrogen atom, a chlorine atom, a bromine atom, an alkyl radical containing up to 10 carbon atoms, a C₆₋₁₀ aromatic radical which is unsubstituted or substituted by an alkyl radical containing up to 10 carbon atoms.

Claim 16

The polymer alloy according to Claim 5 characterised by that in component (ii) g is poly [oxy (methyl) phenylsilyleneoxy -1,4-phenylene.

Claim 17

The polymer alloy according to Claim 5 characterised by that in component (ii) h is poly (benzoyliminoethylene).

Claim 18

The polymer alloy according to Claim 5 characterised by that in component (i) is a homopolymer of Formula I wherein n is 0 and one of R₁ or R₂ is a methyl radical and the other is a hydrogen atom.

Claim 19

They polymer alloy according to Claim 5, characterised by that in component (i) is a copolymer comprising from 0.1 to 40 mole percent of a monomer residue of Formula I wherein n is an integer and from 99.1 to 40 mole percent of a monomer residue of Formula II.

Claim 20

The polymer alloy according to Claim 19 characterised by that in component (i) is a copolymer comprising from 5 to 30 mole percent of a monomer residue of Formula I wherein n is 1 and R₁ is a ethyl radical and R₂, R₃, and R₄ are hydrogen atoms and from 95 to 70 mole percent of the residue of a monomer of Formula II.