Claims
- 1. A binder powder for dry binding of fibre materials based on a redispersible vinyl ester copolymer powder or a redispersible (meth)acrylic acid copolymer powder said vinyl ester copolymer comprising at least one monomer selected from the group consisting of vinyl esters of unbranched or branched alkyl carboxylic acids having 1 to 15 C atoms and a (meth)acrylic acid ester copolymer comprising at least one monomer selected from the group consisting of methacrylic acid esters of alcohols having 1 to 10 carbon atoms and the vinyl ester and (meth)acrylic acid ester copolymer, in each case comprising 0.1 to 10% by weight, based on the total weight of the copolymer, of at least one ethylenically unsaturated comonomer having a crosslinking action.
- 2. A binder according to claim 1, wherein the powder comprises at least one comonomer having a crosslinking action selected from the group consisting of acrylamidoglycolic acid, methacrylamidoglycolic acid, methylester, N-methylolacrylamide, N-methylolmethacrylamide, allyl-N-methylolcarbamate, alkyl ethers and esters of N-methylolacrylamide, esters of N-methylolmethacrylamide and esters of allyl N-methylolcarbamate.
- 3. A binder according to claim 1, wherein the vinyl ester copolymers comprise 70 to 95% by weight of vinyl acetate, 5 to 25% by weight of ethylene and/or 5 to 30% by weight of diisopropyl fumarate and 0.1 to 10% by weight of N-methylol(meth)-acrylamide.
- 4. A binder according to claim 1, wherein the vinyl ester copolymer comprises 50 to 70% by weight of vinyl acetate, 10 to 30% by weight of vinyl esters of .alpha.-branched monocarboxylic acids having 9 to 10 carbon atoms, ethylene and 0.1 to 10.0% by weight of N-methylol(meth)-acrylamide.
- 5. A binder according to claim 1, wherein the vinyl ester copolymer comprises 15 to 50% by weight of vinyl acetate, 30 to 65% by weight of vinyl chloride and/or diisopropyl fumarate, 5 to 25% by weight of ethylene and 0.1 to 10% by weight of N-methylol(meth)-acrylamide.
- 6. A binder according to claim 1, wherein the vinyl ester copolymer comprises 50 to 70% by weight of vinyl acetate, 1 to 30% by weight of N-butyl acrylate or 2-ethylhexyl acrylate, 5 to 25% by weight of ethylene and 0.1 to 10.0% by weight of N-methylol(meth)acrylamide.
- 7. A binder according to claim 1, wherein the (meth)acrylic acid ester copolymer comprises 30 to 70% by weight of methacrylate and 70 to 30% by weight of n-butyl acrylate.
- 8. A binder according to claim 1, wherein the (meth)acrylic acid ester copolymer comprises 2-ethylhexyl acrylate and 0.1 to 10% by weight of N-methylol(meth)acrylamide.
- 9. A binder according to claim 1, wherein the (meth)acrylic acid ester copolymer comprises 30 to 70% by weight of styrene and 70 to 30% by weight of n-butyl acrylate and/or 2-ethylhexyl acrylate and 0.1 to 10% by weight of N-methylol(meth)acrylamide.
- 10. A binder according to claim 1, wherein the crosslinkable, powder is used for compaction of wood fibres, cellulose fibres, wool, cotton, mineral fibres, ceramic fibres and synthetic fibres based on fibre-forming polymers.
- 11. A binder according to claim 10, wherein the fibre-forming polymers are selected from the group consisting of viscose fibres, fibres of polyethylene, polypropylene, polyester, polyamide, polyacrylonitrile and carbon, fibres of homo- and copolymer of vinyl chloride and fibres of homo- or copolymers of tetrafluoroethylene.
Priority Claims (1)
Number |
Date |
Country |
Kind |
43 06 808.1 |
Apr 1993 |
DEX |
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Parent Case Info
This is a continuation of application Ser. No. 08/507,290, filed Aug. 29, 1995, U.S. Pat. No. 5,668,216.
Continuations (1)
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Number |
Date |
Country |
Parent |
507290 |
Aug 1995 |
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