Flat free pneumatic tire and void free filling therefor

Claim 2

A FLAT-FREE PNEUMATIC TIRE CASING AND AN ESSENTIALLY VOIDFREE POLYURETHANE ELASTOMERIC FILLING MATERIAL CONFINED, AT LEAST IN PART, BY SAID CASING, SAID ELASTOMERIC MATERIAL BEING THE PRODUCT OF THE REACTION OF, IN THE ESSENTIAL ABSENCE OF FOAM PRODUCING MATERIAL IN THE REACTION ZONE, A DEFINED PREPOLYMER AND A DEFINED OTHER REACTANT, WHERE SAID PREPOLYMER REACTANT IS SELECTED FROM THE CLASS CONSISTING OF

Claim 3

ORGANIC POLYISOCYANATE AND HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYETHER, WHEREIN ESSENTIALLY ALL THE PREPOLYMER TERMINAL GROUPS ARE ISOCYANATE GROUPS;

Claim 4

ORGANIC POLYISOCYANATE AND HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYETHER, WHEREIN ESSENTIALLY ALL THE PREPOLYMER TERMINAL GROUPS ARE ISOCYANATE GROUPS;

Claim 5

ORGNIC POLYISOCYANATE AND HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYESTER, WHEREIN ESSENTIALY ALL THE PREPOLYMER TERMINAL GROUPS ARE ISOCYANATE GROUPS;

Claim 6

ORGNIC POLYISOCYANATE AND HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYESTER, WHEREIN ESSENTIALY ALL THE PREPOLYMER TERMINAL GROUPS ARE ISOCYANATE GROUPS;

Claim 7

organic polyisocyanate and hydroxyl group terminated polyfunctional polyester, wherein essentially all the prepolymer terminal groups are isocyanate groups;

Claim 8

organic polyisocyanate and hydroxyl group terminated polyfunctional polyester, wherein essentially all the prepolymer terminal groups are isocyanate groups;

Claim 9

The tire as defined in claim 1 wherein said filling material is wholly confined by said casing and the rim of the vehicle wheel on which said tire is mounted.

Claim 10

The tire of claim 1 wherein said polyisocyanate is aromatic diisocyanate.

Claim 11

organic polyisocyanate and hydroxyl group terminated polyfunctional polyether wherein essentially all the prepolymer terminal groups are isocyanate groups which groups have been blocked to afford ''''isocyanate'''' reactivity only at elevated temperature; and

Claim 12

organic polyisocyanate and hydroxyl group terminated polyfunctional polyether wherein essentially all the prepolymer terminal groups are isocyanate groups which groups have been blocked to afford ''''isocyanate'''' reactivity only at elevated temperature; and

Claim 13

ORGANIC POLYISOCYANATE AND HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYETHER WHEREIN ESSENTIALLY ALL THE PREPOLYMER TERMINAL GROUPS ARE ISOCYANATE GROUPS WHICH GROUPS HAVE BEEN BLOCKED TO AFFORD "ISOCYANATE" REACTIVITY ONLY AT ELEVATED TEMPERATURE; AND

Claim 14

ORGANIC POLYISOCYANATE AND HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYETHER WHEREIN ESSENTIALLY ALL THE PREPOLYMER TERMINAL GROUPS ARE ISOCYANATE GROUPS WHICH GROUPS HAVE BEEN BLOCKED TO AFFORD "ISOCYANATE" REACTIVITY ONLY AT ELEVATED TEMPERATURE; AND

Claim 15

ORGANIC POLYISOCYANATE AND HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYESTER WHEREIN ESSENTIALLY ALL THE PREPOLYMER TERMINAL GROUPS ARE ISOCYANATE GROUPS WHICH GROUPS HAVE BEEN BLOCKED TO AFFORD "ISOCYANATE" REACTIVITY ONLY AT ELEVATED TEMPERATURE; SAID OTHER REACTANT IS HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYETHER, IN THE CASE OF SAID PREPOLYMER (1) AND SAID PREPOLYMER (3) TO OBTAIN POLY(ETHER)URETHANE ELASTOMERIC MATERIAL; SAID OTHER REACTANT IS HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYESTER, IN THE CASE OF SAID PREPOLYMER (2) AND SAID PREPOLYMER (4) TO OBTAIN POLY(ETHER)URETHANE ELASTOMERIC MATERIAL SAID POLYURETHANE ELASTOMERIC MATERIAL BEING CHARACTERIZED IN PART BY AN ESSENTIAL FREEDOM FROM VOIDS.

Claim 16

ORGANIC POLYISOCYANATE AND HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYESTER WHEREIN ESSENTIALLY ALL THE PREPOLYMER TERMINAL GROUPS ARE ISOCYANATE GROUPS WHICH GROUPS HAVE BEEN BLOCKED TO AFFORD "ISOCYANATE" REACTIVITY ONLY AT ELEVATED TEMPERATURE; SAID OTHER REACTANT IS HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYETHER, IN THE CASE OF SAID PREPOLYMER (1) AND SAID PREPOLYMER (3) TO OBTAIN POLY(ETHER)URETHANE ELASTOMERIC MATERIAL; SAID OTHER REACTANT IS HYDROXYL GROUP TERMINATED POLYFUNCTIONAL POLYESTER, IN THE CASE OF SAID PREPOLYMER (2) AND SAID PREPOLYMER (4) TO OBTAIN POLY(ETHER)URETHANE ELASTOMERIC MATERIAL SAID POLYURETHANE ELASTOMERIC MATERIAL BEING CHARACTERIZED IN PART BY AN ESSENTIAL FREEDOM FROM VOIDS.

Claim 17

organic polyisocyanate and hydroxyl group terminated polyfunctional polyester wherein essentially all the prepolymer terminal groups are isocyanate groups which groups have been blocked to afford ''''isocyanate'''' reactivity only at elevated temperature; said other reactant is hydroxyl group terminated polyfunctional polyether, in the case of said prepolymer (1) and said prepolymer (3) to obtain poly(ether)urethane elastomeric material; said other reactant is hydroxyl group terminated polyfunctional polyester, in the case of said prepolymer (2) and said Prepolymer (4) to obtain poly(ester)urethane elastomeric material; said polyurethane elastomeric material being characterized in part by an essential freedom from voids.

Claim 18

organic polyisocyanate and hydroxyl group terminated polyfunctional polyester wherein essentially all the prepolymer terminal groups are isocyanate groups which groups have been blocked to afford ''''isocyanate'''' reactivity only at elevated temperature; said other reactant is hydroxyl group terminated polyfunctional polyether, in the case of said prepolymer (1) and said prepolymer (3) to obtain poly(ether)urethane elastomeric material; said other reactant is hydroxyl group terminated polyfunctional polyester, in the case of said prepolymer (2) and said Prepolymer (4) to obtain poly(ester)urethane elastomeric material; said polyurethane elastomeric material being characterized in part by an essential freedom from voids.

Claim 19

The tire of claim 1 wherein said polyether is polyoxyalkylene polyol having 2- 4 hydroxyl groups and where alkylene has 2- 6 carbon atoms.

Claim 20

The tire of claim 1 wherein said polyester is a polymer or copolymer of (1) alkanedioic acid having 2- 8 carbon atoms and phenylenedioic acid with (2) alkanepolyol and oxyalkylenepolyol where said polyol has 2- 3 hydroxyl groups and where alkane and alkylene have 2- 6 carbon atoms.

Claim 21

The tire of claim 1 wherein said polyisocyanate is aromatic diisocyanate and said polyether is polyoxypropylene diol or triol polyoxypropylene derivative of alkanetriol having 3- 6 carbon atoms in said alkanetriol.

Claim 22

The tire of claim 6 wherein at least a substantial amount of defined derivative triol is used as a reaction material in the poly(ether)urethane reaction.

Claim 23

The tire of claim 1 wherein said prepolymer is prepared from toluene diisocyanate and triol polyoxypropylene derivative of glycerine of molecular weight about 3,000, and said TDI-triol prepolymer is reacted with a mixture of polyoxypropylene diol of molecular weight about 2,000 and aforesaid triol, said mixture having an equivalent weight of about 1,000.

Claim 24

A resilient essentially void-free polyurethane elastomer material product adapted for use as a filling material for a pneumatic tire, said elastomeric material being the product of the reaction of, in the essential absence of foam producing material in the reaction zone, a defined prepolymer reactant and a defined other reactant, where said prepolymer reactant is selected from the class consisting of (1) organic polyisocyanate and hydroxyl group terminated polyfunctional polyether, wherein essentially all the prepolymer terminal groups are isocyanate groups; (2) organic polyisocyanate and hydroxyl group terminated polyfunctional polyester, wherein essentially all the prepolymer terminal groups are isocyanate groups; (3) organic polyisocyanate and hydroxyl group terminated polyfunctional polyether wherein essentially all the prepolymer terminal groups are isocyanate groups which groups have been blocked to afford ''''isocyanate'''' reactivity only at elevated temperature; and (4) organic polyisocyanate and hydroxyl group terminated polyfunctional polyester wherein essentially all the prepolymer terminal groups are isocyanate groups which groups have been blocked to afford ''''isocyanate'''' reactivity only at elevated temperature; said other reactant is hydroxyl group terminated polyfunctional polyether, in the case of said prepolymer (1) and said prepolymer (3) to obtain poly(ether)urethane elastomeric material; said other reactant is hydroxyl group terminated polyfunctional polyester, in the case of said prepolymer (2) and said prepolymer (4) to obtain poly(ester)urethane elastomeric material; said polyurethane elastomeric material being characterized in part by an essential freedom from voids.

Claim 25

A resilient essentially void-free polyurethane elastomer material product adapted for use as a filling material for a pneumatic tire, said elastomeric material being the product of the reaction of, in the essential absence of foam producing material in the reaction zone, a defined prepolymer reactant and a defined other reactant, where said prepolymer reactant is selected from the class consisting of (1) organic polyisocyanate and hydroxyl group terminated polyfunctional polyether, wherein essentially all the prepolymer terminal groups are isocyanate groups; (2) organic polyisocyanate and hydroxyl group terminated polyfunctional polyester, wherein essentially all the prepolymer terminal groups are isocyanate groups; (3) organic polyisocyanate and hydroxyl group terminated polyfunctional polyether wherein essentially all the prepolymer terminal groups are isocyanate groups which groups have been blocked to afford ''''isocyanate'''' reactivity only at elevated temperature; and (4) organic polyisocyanate and hydroxyl group terminated polyfunctional polyester wherein essentially all the prepolymer terminal groups are isocyanate groups which groups have been blocked to afford ''''isocyanate'''' reactivity only at elevated temperature; said other reactant is hydroxyl group terminated polyfunctional polyether, in the case of said prepolymer (1) and said prepolymer (3) to obtain poly(ether)urethane elastomeric material; said other reactant is hydroxyl group terminated polyfunctional polyester, in the case of said prepolymer (2) and said prepolymer (4) to obtain poly(ester)urethane elastomeric material; said polyurethane elastomeric material being characterized in part by an essential freedom from voids.

Claim 26

The product of claim 9 wherein said polyisocyanate is aromatic diisocyanate.

Claim 27

The product of claim 9 wherein said polyether is polyoxyalkylen polyol having 2- 4 hydroxyl groups and where alkylene has 2- 6 carbon atoms.

Claim 28

The product of claim 9 wherein said polyester is a polymer or copolymer of (a) alkanedioic acid having 2- 8 carbon atoms and phenylenedioic acid with (b) alkanepolyol and oxyalkylenepolyol where said polyol has 2- 3 hydroxyl groups and where alkanE and alkylene have 2- 6 carbon atoms.

Claim 29

The product of claim 9 wherein said polyisocyanate is aromatic diisocyanate and said polyether is polyoxypropylene diol or a triol polyoxypropylene derivative of alkanetriol having 3- 6 carbon atoms in said alkanetriol.

Claim 30

The product of claim 13 wherein at least a substantial amount of defined derivative triol is used as a reaction material in the poly(ether)urethane reaction.

Claim 31

The product of claim 9 wherein said prepolymer is prepared from toluene diisocyanate and triol polyoxypropylene derivative of glycerine of molecular weight of about 3,000, and said TDI-triol prepolymer is reacted with a mixture of polyoxypropylene diol of molecular weight about 2,000 and aforesaid triol, said mixture having an equivalent weight of about 1,000.

Claim 32

A resilient essentially void-free polyurethane elastomeric material product adapted for use as a filling material for pneumatic tires, said elastomeric material being the product of the reaction of a. a prepolymer of about 16 parts of toluene diisocyanate, 80/20 isomer content, and about 84 parts of triol polyoxypropylene derivative of glycerine of about 3,000 molecular weight, and about 0.03 parts of stannous octoate catalyst, at ambient temperature, said prepolymer having a theoretical free isocyanate group content of 4.2% and an equivalent weight of about 1,000; b. a mixture of polyoxypropylene diol of molecular weight of about 2,000 and the triol of (a), said mixture having an equivalent weight of about 1,000; c. said prepolymer of (a) and said mixture of (b) being reacted in about equal weight parts, in the presence of about 0.02 parts of stannous octoate catalyst, and d. the liquid reaction product of (c) being cured at about 160* F. for about 12 hours to obtain a resilient, essentially void-free elastomeric product.

Claim 33

A resilient essentially void-free polyurethane elastomeric material product adapted for use as a filling material for pneumatic tires, said elastomeric material being the product of the reaction of a. a prepolymer of about 16 parts of toluene diisocyanate, 80/20 isomer content, and about 84 parts of triol polyoxypropylene derivative of glycerine of about 3,000 molecular weight, and about 0.03 parts of stannous octoate catalyst, at ambient temperature, said prepolymer having a theoretical free isocyanate group content of 4.2% and an equivalent weight of about 1,000; b. a mixture of polyoxypropylene diol of molecular weight of about 2,000 and the triol of (a), said mixture having an equivalent weight of about 1,000; c. said prepolymer of (a) and said mixture of (b) being reacted in about equal weight parts, in the presence of about 0.02 parts of stannous octoate catalyst, and d. the liquid reaction product of (c) being cured at about 160* F. for about 12 hours to obtain a resilient, essentially void-free elastomeric product.