Patent EP0427874B1 successfully refreshed from Google Patents.
EP0427874B1
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Polyacetal copolymer and composition thereof
Assignee: Asahi Kasei Corp
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Filing: 1990-06-08
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Granted: 1995-09-06
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Expires: 2010-06-08
Abstract
Abstract A polyacetal copolymer, a method of producing the same, and a composition comprising the same and a vinyl polymer and/or a polyoxymethylene, wherein said copolymer comprises a polyoxymethylene group (A) and a vinyl polymer group (B), has a number-average molecular weight of 10,000 to 500,000, and is represented by the following general formula: An - X - B, wherein X stands for the terminal group of B and represents a binding group derived from a compound having at least two carbon atoms and one to four groups selected from among hydroxyl, carboxyl, amino, ester, and alkoxy groups; An means that n A groups are bound to X; and n is 1 to 4.
Inventors
- 👤 Tadashige Hata
- 👤 Kazuhiko Matsuzaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 08:46
CPC Classifications
C; C08; C08L; C08L59/00; C08G; C08G2/00; C08G2/38; C08L101/00; C08L71/00; C08L77/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
131 words
A polyacetal copolymer comprising a polyoxymethylene group (A) and a polymer group (B), the copolymer having a structure of the formula (I): wherein X is a terminal group of B and represents a binding group derived from a compound having at least two carbon atoms and 1 to 4 groups selected from hydroxyl, carboxyl, ester, amide, amino and alkoxy groups, and An means that A is present in the quantity of n times in number, and bonds to X, in which n = 1 to 4, and the copolymer has a number average molecular weight of 10,000 to 500,000, where the polymer group (B) has the formula wherein R 1 is hydrogen or alkyl, R 2 is hydrogen, phenyl, cyano, chloro, acetyl or alkyl ester and I is 10 to 5,000.
Claim 2
Dependent Claim
131 words
A polyacetal copolymer comprising a polyoxymethylene group (A) and a polymer group (B), the copolymer having a structure of the formula (I): wherein X is a terminal group of B and represents a binding group derived from a compound having at least two carbon atoms and 1 to 4 groups selected from hydroxyl, carboxyl, ester, amide, amino and alkoxy groups, and An means that A is present in the quantity of n times in number, and bonds to X, in which n = 1 to 4, and the copolymer has a number average molecular weight of 10,000 to 500,000, where the polymer group (B) has the formula wherein R 1 is hydrogen or alkyl, R 2 is hydrogen, phenyl, cyano, chloro, acetyl or alkyl ester and I is 10 to 5,000.
Claim 3
Dependent Claim
24 words
The polyacetal copolymer according to claim 1, wherein the polyoxymethylene group is a polyoxymethylene polymer formed by a recurring oxymethylene unit (̵CH 2 O)̵.
Claim 4
Dependent Claim
53 words
The polyacetal copolymer according to claim 1, wherein the polyoxymethylene group is a polyoxymethylene copolymer having a structure in which an oxyalkylene unit of the formula wherein each R o is independently hydrogen, alkyl or aryl and m is 2 to 6 is inserted in a polymer formed by a recurring oxymethylene unit.
Claim 5
Dependent Claim
31 words
The polyacetal copolymer according to claims 1 or 3, wherein 0.05 to 50 mol, per 100 mol of the oxymethylene unit, of the oxyalkylene unit is inserted into the oxymethylene unit.
Claim 6
Dependent Claim
23 words
The polyacetal copolymer according to claim 1 or 3, wherein the oxyalkylene unit is an oxyethylene unit of ⁅(̵CH 2 ) 2 O⁆.
Claim 7
Dependent Claim
23 words
The polyacetal copolymer according to claim 1 or 3, wherein the oxyalkylene unit is an oxytetramethylene unit of ⁅(̵CH 2 ) 4 O⁆.
Claim 8
Dependent Claim
25 words
The polyacetal copolymer according to any of the claims 1 to 6, wherein the vinyl polymer group has a molecular weight of 1,000 to 100,000.
Claim 9
Dependent Claim
71 words
The polyacetal copolymer according to claim 1, which is a copolymer having the formula of wherein D is -NH-, -O- or A is a polyoxymethylene group, Y is oxygen or sulfur, a is 0 to 3, R 1 is hydrogen or alkyl, R 2 is hydrogen, phenyl, cyano, chloro, acetyl or alkyl ester, I is 10 to 5,000, and the copolymer has a number average molecular weight of 10,000 to 500,000.
Claim 10
Dependent Claim
47 words
The process for production of the polyacetal copolymer recited in claim 1, which comprises homopolymerizing formaldehyde or trioxane in the presence, as a molecular weight regulator, of a polymer having, in one terminal, 1 to 4 groups selected from hydroxyl, carboxyl, ester, amino, amide and alkoxy groups.
Claim 11
Dependent Claim
52 words
The process for the production of the polyacetal copolymer recited in claim 1, which comprises copolymerizing formaldehyde or trioxane with a cyclic ether in the presence, as a molecular weight regulator, of a polymer having, in one terminal, 1 to 4 groups selected from hydroxyl, carboxyl, ester, amino, amide and alkoxy groups.
Claim 12
Dependent Claim
20 words
The process according to claim 10, wherein the cyclic ether is ethylene glycol formal, diethylene glycol formal or 1,4-butanediol formal.
Claim 13
Dependent Claim
13 words
The process according to claim 10, wherein the cyclic ether is ethylene oxide.
Claim 14
Dependent Claim
22 words
The process according to any of the claims 9 to 12, wherein the homopolymerization or copolymerization is carried out without a solvent.
Claim 15
Dependent Claim
23 words
The process according to any of the claims 9 to 12, wherein the homopolymerization or copolymerization is carried out in an organic solvent.
Claim 16
Dependent Claim
103 words
A polyacetal resin composition comprising: (a) a polyacetal copolymer recited in any of the claims 1 to 8 (b) a polymer having a structure of the formula (III): wherein R i ' is hydrogen or alkyl, R 2 ' is hydrogen, phenyl, cyano, chloro, acetyl or alkyl ester, and z is 10 to 5,000, and (c) a polyoxymethylene; the composition containing, per 100 parts by weight of the (a) polyacetal copolymer, 0 to 500 parts by weight of the (b) polymer and 0 to 1,700 parts by weight of the (c) polyoxymethylene, and containing (a) and at least one of (b) and (c).
Claim 17
Dependent Claim
74 words
The polyacetal resin composition according to claim 15, wherein the polyacetal copolymer is a copolymer having the formula wherein D is -NH-, -O- or A is a polyoxymethylene group, Y is oxygen or sulfur, a is 0 to 3, R 1 is hydrogen or alkyl, R 2 is hydrogen, phenyl, cyano, chloro, acetyl or alkyl ester, I is 10 to 5,000, and the copolymer has a number average molecular weight of 10,000 to 500,000.
Claim 18
Dependent Claim
19 words
The polyacetal composition according to claim 15 or 16, wherein the polyoxymethylene is a homopolymer of formaldehyde or trioxane.
Claim 19
Dependent Claim
23 words
The polyacetal composition according to claim 15 or 16, wherein the polyoxymethylene is a copolymer of formaldehyde or trioxane with a cyclic ether.
Claim 20
Dependent Claim
24 words
The polyacetal composition according to claim 18, wherein the cyclic ether is ethylene oxide, ethylene glycol formal, diethylene glycol formal or a 1,4-butanediol formal.
References Cited (Backward Citations)
No citation records indexed.
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