US4058506A — Thermoplastic, elastic polyurethanes which are so…

Claim 1

Independent Claim 149 words

Thermoplastic, elastic polyurethanes which are soluble in ethers and/or ketones and have a high surface hardness and high modulus of elasticity, which are obtained by reaction of A. one mole of a lineaar polyester-ol and/or polyether-ol of molecular weight from 600 to 4,000, B. from 4 to 16 moles of a branched-chain diol of the formula ##STR6## in which R 1 is alkyl of 1 to 4 carbon atoms and R 2 is hydrogen or alkyl of 1 to 4 carbon atoms and optionally C. from 0.001 to 1 mole of an aliphatic triol, with D. from 5 to 18.5 moles of an aromatic diisocyanate of the formula ##STR7## in which X is methylene or a SO 2 group and R and R' are hydrogen, chlorine and/or methyl, the ratio of the number of hydroxyl groups employed to the number of isocyanate groups being from about 1:0.98 to 1:1.08.

Claim 2

Dependent Claim 149 words

Thermoplastic, elastic polyurethanes which are soluble in ethers and/or ketones and have a high surface hardness and high modulus of elasticity, which are obtained by reaction of A. one mole of a lineaar polyester-ol and/or polyether-ol of molecular weight from 600 to 4,000, B. from 4 to 16 moles of a branched-chain diol of the formula ##STR6## in which R 1 is alkyl of 1 to 4 carbon atoms and R 2 is hydrogen or alkyl of 1 to 4 carbon atoms and optionally C. from 0.001 to 1 mole of an aliphatic triol, with D. from 5 to 18.5 moles of an aromatic diisocyanate of the formula ##STR7## in which X is methylene or a SO 2 group and R and R' are hydrogen, chlorine and/or methyl, the ratio of the number of hydroxyl groups employed to the number of isocyanate groups being from about 1:0.98 to 1:1.08.

Claim 3

Dependent Claim 171 words

A process for the manufacture of thermoplastic and elastic polyurethanes which are soluble in ethers and/or ketones and have a high surface hardness and high modulus of elasticity, from a polyester-ol and/or polyether-ol, an aromatic diiscyanate, an aliphatic branched-chain diol and, optionally, a triol, which comprises: reacting A. 1 mole of one or more linear polyester-ols and/or polyether-ols and molecular weight from 600 to 4,000, B. from 4 to 16 moles of a branched-chain diol of the formula ##STR8## in which R 1 is alkyl of 1 to 4 carbon atoms and R 2 is hydrogen or alkyl of 1 to 4 carbon atoms and optionally C. from 0.001 to 1 mole of an aliphatic triol, with D. from 5 to 18.5 moles of an aromatic diisocyanate of the formula ##STR9## in which X is methylene or a SO 2 group and R and R' are hydrogen, chlorine and/or methyl, the ratio of the number of hydroxyl groups employed to the number of isocyanate groups being from about 1:1 to 1:108.

Claim 4

Dependent Claim 171 words

A process for the manufacture of thermoplastic and elastic polyurethanes which are soluble in ethers and/or ketones and have a high surface hardness and high modulus of elasticity, from a polyester-ol and/or polyether-ol, an aromatic diiscyanate, an aliphatic branched-chain diol and, optionally, a triol, which comprises: reacting A. 1 mole of one or more linear polyester-ols and/or polyether-ols and molecular weight from 600 to 4,000, B. from 4 to 16 moles of a branched-chain diol of the formula ##STR8## in which R 1 is alkyl of 1 to 4 carbon atoms and R 2 is hydrogen or alkyl of 1 to 4 carbon atoms and optionally C. from 0.001 to 1 mole of an aliphatic triol, with D. from 5 to 18.5 moles of an aromatic diisocyanate of the formula ##STR9## in which X is methylene or a SO 2 group and R and R' are hydrogen, chlorine and/or methyl, the ratio of the number of hydroxyl groups employed to the number of isocyanate groups being from about 1:1 to 1:108.

Claim 5

Dependent Claim 46 words

A process for the manufacture of thermoplastic and elastic polyurethanes which are soluble in ethers and/or ketones and have a high surface hardness and high modulus of elasticity, as claimed in claim 2, wherein the branched diol used is 2-methyl-1,3-propanediol, 2-methyl-2-ethyl-1,3-propanediol, 2-methyl-2-isopropyl-1,3-propanediol, 2,2-diethyl-1,3-propanediol, 2-methyl-2-butyl-1,3-propanediol or 2-ethyl-2-butyl-1,3-propanediol.

Claim 6

Dependent Claim 15 words

A process as claimed in claim 2, wherein 2,2-dimethyl-1,3-propanediol is employed as the branched-chain diol.

Claim 7

Dependent Claim 22 words

A process as claimed in claim 2, wherein 4,4'-, 4,2'- and 2,2'-diisocyanato-diphenylmethane or corresponding isomer mixtures are employed as the aromatic dissocyanate.

Claim 8

Dependent Claim 15 words

A process as claimed in claim 5, wherein 4,4'-diisocyanatodiphenylmethane is employed as the aromatic diiscyanate.

Claim 9

Dependent Claim 23 words

A process as claimed in claim 2, wherein 2,2-dimethyl-1,3-propanediol is employed as the branched-chain diol and 4,4'-diisocyanato-diphenylmethane is employed as the aromatic diisocyanate.

Claim 10

Dependent Claim 111 words

A process as claimed in claim 2, wherein the following are reacted by conventional methods: A. 1 mole of at least one linear polyester-ol and/or polyether-ol of molecular weight from 600 to 4,000, B. from 4 to 12 moles of a branched-chain diol of the formula HOCH 2 CR'--R 2 --CH 2 OH, in which R' and R 2 have the above meaning, and optionally C. from 0.1 to 0.5 mole of an aliphatic triol, with D. from 4.5 to 13.75 moles of 2,2'-, 4,4'- and/or 4,2'-diisocyanato-diphenylmethane or corresponding isomer mixtures, the ratio of the sum of the hydroxyl groups to the number of isocyanate groups being from 1:0.98 to 1:1.06.

Claim 11

Dependent Claim 21 words

Thermoplastic, elastic polyurethanes as set forth in claim 1, wherein said branched diol is 2-methyl-1,3-propanediol, 2-methyl-2-ethyl-1,3-propanediol, 2-methyl-2-isopropyl-1,3-propanediol, 2,2-diethyl-1,3-propanediol, 2-methyl-2-butyl-1,3-propanediol or 2-ethyl-2-butyl-1,3-propanediol.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1980-11-14	1981-05-16	1981-11-15	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1984-11-14	1985-05-16	1985-11-15	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1988-11-14	1989-05-16	1989-11-15	$7700.00	Window Closed / Lapsed

Thermoplastic, elastic polyurethanes which are soluble in ethers and/or ketones

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