Modified terephthalic ester polyols and rigid foams therefrom

Claim 2

A terephthalic ester polyol produced by reacting recycled polyethylene terephthalate with a 1 to 20 molar ethoxylate of an alkylphenol wherein the alkyl comprises from 8 to 18 carbon atoms.

Claim 3

The polyol of claim 1 wherein recycled polyethylene terephthalate is reacted with about 5 wt % to 50 wt % of ethoxylated alkylphenol wherein the alkyl comprises from 8 to 18 carbon atoms.

Claim 4

The polyol of claim 2 wherein the ethoxylated alkylphenol is in an amount of 10 wt % to 25 wt % and the alkyl is from about 9 to 12 carbon atoms.

Claim 5

A rigid foam obtained by reacting in the presence of a blowing agent and a catalyst of polyisocyanurate or polyurethane formation, an organic polyisocyanate and polyol component comprising the terephthalic ester polyol of claim 1.

Claim 6

A modified terephthalic ester polyol produced by reacting a recycled polyethylene terephthalate based polyol with about 5 to 50 wt % of a 1 to 20 molar ethoxylate of nonylphenol to form a modified terephthalic ester polyol.

Claim 7

A modified terephthalic ester polyol produced by reacting a recycled polyethylene terephthalate based polyol with about 5 to 50 wt % of a 1 to 20 molar ethoxylate of nonylphenol to form a modified terephthalic ester polyol.

Claim 8

The polyol of claim 5 wherein the recycled polyethylene terephthalate based polyol is reacted with about 10 wt % to 25 wt % of the 2 to 10 molar ethoxylate of nonylphenol.

Claim 9

A rigid foam obtained by reacting in the presence of a blowing agent and a catalyst of polyisocyanurate or polyurethane formation, an organic polyisocyanate and polyol component comprising the modified terephthalic ester polyol of claim 5.

Claim 10

A mixture of modified terephthalic ester polyols produced by reacting: a. recycled polyethylene terephthalate; b. an oxyalkylene glycol of the formula: ##STR3## wherein R is hydrogen or alkyl of 1 to 4 carbon atoms and n ranges from 2 to 10; c. and about 5 to 50 wt % of a 1 to 20 molar ethoxylate of an alkylphenol wherein the alkyl is from 8 to 16 carbon atoms to form a mixture of modified terephthalic ester polyols.

Claim 11

A mixture of modified terephthalic ester polyols produced by reacting: a. recycled polyethylene terephthalate; b. an oxyalkylene glycol of the formula: ##STR3## wherein R is hydrogen or alkyl of 1 to 4 carbon atoms and n ranges from 2 to 10; c. and about 5 to 50 wt % of a 1 to 20 molar ethoxylate of an alkylphenol wherein the alkyl is from 8 to 16 carbon atoms to form a mixture of modified terephthalic ester polyols.

Claim 12

The mixture of modified terephthalic ester polyols claim 8 produced by reacting about 10 wt % to 25 wt % of a 2 to 10 molar ethoxylate of nonylphenol.

Claim 13

A rigid foam obtained by reacting in the presence of a blowing agent and a catalyst of polyisocyanurate or polyurethane formation, an organic polyisocyanate and polyol component comprising the mixture of modified terephthalic ester polyols of claim 8.

Claim 14

A mixture of modified terephthalic ester polyols produced by: a. reacting recycled polyethylene terephthalate with diethylene glycol and at least one or more oxyalkylene glycol of the formula: ##STR4## wherein R is hydrogen or alkyl of 1 to 4 carbon atoms and n ranges from 2 to 10, wherein the mole ratio of glycols to recycled polyethylene terephthalate is greater than 1.2:1; b. stripping off as overhead at least 5 wt % of the reaction product from step a. based on the reactants charged, where at least 25% of the overhead is ethylene glycol; to form a mixture of terephthalic ester polyols of average hydroxyl number between 100 and 500; c. reacting the mixture of terephthalic ester polyols with about 5 wt % to 50 wt % of a 1 to 20 molar ethoxylate of an alkylphenol wherein the alkyl is from 8 to 16 carbon atoms to form a mixture of modified terephthalic ester polyols.

Claim 15

A mixture of modified terephthalic ester polyols produced by: a. reacting recycled polyethylene terephthalate with diethylene glycol and at least one or more oxyalkylene glycol of the formula: ##STR4## wherein R is hydrogen or alkyl of 1 to 4 carbon atoms and n ranges from 2 to 10, wherein the mole ratio of glycols to recycled polyethylene terephthalate is greater than 1.2:1; b. stripping off as overhead at least 5 wt % of the reaction product from step a. based on the reactants charged, where at least 25% of the overhead is ethylene glycol; to form a mixture of terephthalic ester polyols of average hydroxyl number between 100 and 500; c. reacting the mixture of terephthalic ester polyols with about 5 wt % to 50 wt % of a 1 to 20 molar ethoxylate of an alkylphenol wherein the alkyl is from 8 to 16 carbon atoms to form a mixture of modified terephthalic ester polyols.

Claim 16

The mixture of claim 11 wherein the mixture of terephthalic ester polyols is reacted with about 10 wt % to 25 wt % of a 2 to 10 molar ethoxylate of nonylphenol.

Claim 17

The mixture of claim 12 wherein in the ethoxylate of nonylphenol the ethoxylation averages from about 3 to 4.

Claim 18

The mixture of claim 12 wherein in the ethoxylate of nonylphenol the ethoxylation averages about 3.15.

Claim 19

The mixture of claim 11 wherein in step a. a functionality enhancing additive selected from the group consisting of alpha-methyl glucoside, triethanolamine, diethanolamine and glycerine is present during the reaction.

Claim 20

The mixture of claim 11 wherein in step a. alpha-methyl glucoside is present in an amount up to 10 wt % based on the total weight of reactants charged.

Claim 21

A rigid foam obtained by reacting in the presence of a blowing agent and a catalyst for polyisocyanurate or polyurethane formation, an organic polyisocyanate and polyol component comprising the mixture of modified terephthalic ester polyols of claim 11.