US5225270A — Compatibilized polyphenylene ether/polyamide mono…

Claim 1

Independent Claim 95 words

A monofilament comprising, based on the total weight of the monofilament: (a) from about 70 weight % to about 30 weight % of a polyphenylene ether; (b) from about 30 weight % to about 70 weight % of a polyamide; (c) from about 0.1 weight % to about 2.0 weight % of a compatibilizer compound for (a) and (b); and (d) from about 1 weight % to about 35 weight % of an olefinic elastomer functionalized with carboxyl or carboxylate functionalities; wherein the monofilament has a breaking tenacity of at least 3.5 grams per denier.

Claim 2

Dependent Claim 95 words

A monofilament comprising, based on the total weight of the monofilament: (a) from about 70 weight % to about 30 weight % of a polyphenylene ether; (b) from about 30 weight % to about 70 weight % of a polyamide; (c) from about 0.1 weight % to about 2.0 weight % of a compatibilizer compound for (a) and (b); and (d) from about 1 weight % to about 35 weight % of an olefinic elastomer functionalized with carboxyl or carboxylate functionalities; wherein the monofilament has a breaking tenacity of at least 3.5 grams per denier.

Claim 3

Dependent Claim 51 words

The monofilament according to claim 1, wherein said polyphenylene ether is selected from the group consisting of poly(2,6-dimethyl-1,4-phenylene ether), poly (2-methyl-1,4-phenylene ether), poly (3-methyl-1,4-phenylene ether), poly(2,6-diethyl-1,4-phenylene ether), poly (2,6-dipropyl-1,4-phenylene ether), poly(2-methyl-6-alkyl -1,4-phenylene ether), poly(2,6-dichloromethyl-1,4-phenylene ether), poly(2,3,6-trimethyl-1,4-phenylene ether), poly (2,3,5,6-tetramethyl-1,4-phenylene ether), poly(2,6-dichloro-1,4-phenylene ether), poly(2,6-diphenyl-4-phenylene ether), poly(2,5-dimethyl-1,4-phenylene ether), and blends and copolymers thereof.

Claim 4

Dependent Claim 13 words

The monofilament according to claim 2, wherein said polyphenylene ether is poly(2,6-dimethyl-1,4-phenylene ether).

Claim 5

Dependent Claim 24 words

The monofilament according to claim wherein said polyamide is selected from the group consistinq of nylon 6, nylon 6,6, and blends and copolymers thereof.

Claim 6

Dependent Claim 12 words

The monofilament according to claim 4, wherein said polyamide is nylon 6.

Claim 7

Dependent Claim 37 words

The monofilament according to claim 1, wherein said compatibilizer compound is selected from the group consisting of fumaric acid, maleic acid, itaconic acid, dimethylmaleate, maleimide, tetrahydrophthalimide, maleic anhydride, itaconic anhydride, glutaconic anhydride, citraconic anhydride, and tetrahydrophthalic anhydride.

Claim 8

Dependent Claim 27 words

The monofilament according to claim wherein said functionalized olefinic elastomer is selected from the group consisting of copolymers of ethylene and an α-olefin other than ethylene copolymer.

Claim 9

Dependent Claim 15 words

The monofilament according to claim 7, wherein said functionalized olefinic elastomer is an ethylene/propylene rubber.

Claim 10

Dependent Claim 37 words

The monofilament according to claim 1, wherein said functionalized olefinic elastomer is functionalized with a functional moiety selected from the group consisting of α,β-ethylenically unsaturated dicarboxylic acids having from 4 to 8 carbon atoms and derivatives thereof.

Claim 11

Dependent Claim 89 words

The monofilament according to claim 9, wherein said functionalized olefinic elastomer is functionalized with a functional moiety selected from the group consisting of maleic acid, maleic anhydride, maleic acid monoethyl ester, metal salts of maleic acid monoethyl ester, fumaric acid, fumaric acid monoethyl ester, itaconic acid, vinyl benzoic acid, vinyl phthalic acid, metal salts of fumaric acid monoethyl ester, monoesters of maleic, fumaric or itaconic acids where the alcohol is methyl, propyl, isopropyl, butyl, isobutyl, hexyl, cyclohexyl, octyl, 2-ethyl hexyl, decyl, stearyl, methoxy ethyl, ethoxy ethyl, and hydroxy ethyl.

Claim 12

Dependent Claim 98 words

A felt from a monofilament comprising, based on the total weight of the monofilament. (a) from about 70 weight % to about 30 weight % of a polyphenylene ether; (b) from about 30 weight % to about 70 weight % of a polyamide; (c) from about 0.1 weight % to about 2.0 weight % of a compatibilizer compound for (a) and (b); and (d) from about 1 weight % to about 35 weight % of an olefinic elastomer functionalized with carboxyl or carboxylate functionalities; wherein the monofilament has a breaking tenacity of at least 3.5 grams per denier.

Claim 13

Dependent Claim 98 words

A felt from a monofilament comprising, based on the total weight of the monofilament. (a) from about 70 weight % to about 30 weight % of a polyphenylene ether; (b) from about 30 weight % to about 70 weight % of a polyamide; (c) from about 0.1 weight % to about 2.0 weight % of a compatibilizer compound for (a) and (b); and (d) from about 1 weight % to about 35 weight % of an olefinic elastomer functionalized with carboxyl or carboxylate functionalities; wherein the monofilament has a breaking tenacity of at least 3.5 grams per denier.

Claim 14

Dependent Claim 52 words

The felt according to claim 11, wherein said polyphenylene ether is selected from the group consisting of poly(2,6-dimethyl-1,4-phenylene ether), poly (2-methyl-1,4-phenylene ether), poly (3-methyl-1,4-phenylene ether), poly(2,6-diethyl-1,4-phenylene ether), poly (2,6-dipropyl-1,4-phenylene ether), poly(2-methyl-6-alkyl -1,4-phenylene ether), poly(2,6-dichloromethyl-1,4-phenylene ether), poly(2,3,6-trimethyl-1,4-phenylene ether), poly (2,3,5,6-tetramethyl-1,4-phenylene ether), poly(2,6-dichloro -1,4-phenylene ether), poly(2,6-diphenyl-1,4-phenylene ether), poly(2,5-dimethyl-1,4-phenylene ether), and blends and copolymers thereof.

Claim 15

Dependent Claim 25 words

The felt according to claim 11, wherein said polyamide is selected from the group consisting of nylon 6, nylon 6,6, and blends and copolymers thereof.

Claim 16

Dependent Claim 37 words

The felt according to claim 11, wherein said compatibilizer compound is selected from the group consisting of fumaric acid, maleic acid, itaconic acid, dimethylmaleate, maleimide, tetrahydrophthalimide, maleic anhydride, itaconic anhydride, glutaconic anhydride, citraconic anhydride, and tetrahydrophthalic anhydride.

Claim 17

Dependent Claim 28 words

The felt according to claim 11, wherein said functionalized olefinic elastomer is selected from the group consisting of copolymers of ethylene and an α-olefin other than ethylene copolymer.

Claim 18

Dependent Claim 37 words

The felt according to claim 11, wherein said functionalized olefinic elastomer is functionalized with a functional moiety selected from the group consisting of α,β-ethylenically unsaturated dicarboxylic acids having from 4 to 8 carbon atoms and derivatives thereof.

Claim 19

Dependent Claim 14 words

The felt according to claim 11, wherein said felt is a papermaking machine felt.

Claim 20

Dependent Claim 112 words

A papermaking machine felt formed from a monofilament comprising, based on the total weight of the monofilament: (a) from about 70 weight % to about 30 weight % of poly(2,6-dimethyl-1,4-phenylene ether); (b) from about 30 weight % to about 70 weight % of nylon 6; (c) from about 0.1 weight % to about 2.0 weight % of a compatibilizer comopund for (a) and (b) selected from the group consisting of fumaric acid, maleic acid, maleic anhydride, and itaconic anhydride; and (d) from about 1 weight % to about 35 weight % of a maleic anhydride functionalized ehtylen/propylene rubber; wherein the monofilament has a breaking tenacity of at least 3.5 grams per denier.

Claim 21

Dependent Claim 112 words

A papermaking machine felt formed from a monofilament comprising, based on the total weight of the monofilament: (a) from about 70 weight % to about 30 weight % of poly(2,6-dimethyl-1,4-phenylene ether); (b) from about 30 weight % to about 70 weight % of nylon 6; (c) from about 0.1 weight % to about 2.0 weight % of a compatibilizer comopund for (a) and (b) selected from the group consisting of fumaric acid, maleic acid, maleic anhydride, and itaconic anhydride; and (d) from about 1 weight % to about 35 weight % of a maleic anhydride functionalized ehtylen/propylene rubber; wherein the monofilament has a breaking tenacity of at least 3.5 grams per denier.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1996-07-05	1997-01-04	1997-07-06	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2000-07-05	2001-01-04	2001-07-06	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2004-07-05	2005-01-04	2005-07-06	$7700.00	Window Closed / Lapsed

Compatibilized polyphenylene ether/polyamide monofilament and felt made therefrom

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