Rheology-influencing composition for coating media
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08J-003/00
C08K-003/20
C08L-075/00
C08F-008/30
C08G-018/08
출원번호
US-0089754
(1998-06-02)
우선권정보
DE-0024408 (1997-06-10)
발명자
/ 주소
Dahm Ralf,DEX
Flosbach Carmen,DEX
Kerber Hermann,DEX
Kirchgassler Sandra,DEX
Lerch Dieter,DEX
Schnodewind Frank,DEX
Schubert Walter,DEX
출원인 / 주소
Herberts Gesellschaft mit beschrankter Haftung, DEX
대리인 / 주소
Schwegman, Lundberg, Woessner & Kluth P.A.
인용정보
피인용 횟수 :
5인용 특허 :
2
초록▼
This invention relates to a composition, and to the preparation and use of thereof said composition being suitable as a rheology influencer for coating media and comprising the reaction product formed by reaction of a mixture of components A, B and C with components D, E and F. Components A, B and C
This invention relates to a composition, and to the preparation and use of thereof said composition being suitable as a rheology influencer for coating media and comprising the reaction product formed by reaction of a mixture of components A, B and C with components D, E and F. Components A, B and C form a mixture wherein component A is one or more (meth)acrylic copolymers and/or one or more polyesters which contain hydroxyl groups. Component B is a copolymer of ethylhexyl (meth)acrylate and one or more hydroxyalkyl (meth)acrylates, as well as .alpha.,.beta.-unsaturated monomers which are different therefrom. Component C is a hydroxy--functional microdispersion which is produced by polymerizing hydroxylalkyl (meth)acrylates in combination with unsaturated monomers in a mixture of polyesters or polyacrylates containing carboxyl and/or hydroxyl groups. Component D is one or more aliphatic polyisocyantes and component E is .epsilon.-caprolactam. The caprolactam partially blocks the polyisocyanate. The component F is one or more primary amines. These ingredients are combined in certain specified amounts. The invention also relates to coating media and to the production of these coating media, which contain said composition as a rheology influencer.
대표청구항▼
[ We claim:] [1.] A composition suitable as a rheology influencer for coating media, which comprises a reaction product of a mixture of components A), B) and C) with components D), E) and F) whereincomponent A) is one or more (meth)acrylic copolymers which contain hydroxyl groups and/or one or more
[ We claim:] [1.] A composition suitable as a rheology influencer for coating media, which comprises a reaction product of a mixture of components A), B) and C) with components D), E) and F) whereincomponent A) is one or more (meth)acrylic copolymers which contain hydroxyl groups and/or one or more polyesters which contain hydroxyl groups and which have a hydroxyl number of 30 to 200 mg KOH/g and a carboxyl group content corresponding to an acid number of 0 to 50 mg KOH/g,component B) is one or more copolymers ofa) 20 to 50% by weight of ethylhexyl (meth)acrylateb) 30 to 60% by weight of one or more hydroxyalkyl (meth)acrylates,c) 15 to 40% by weight of .alpha.,.beta.-unsaturated monomers which are different therefrom, andd) 0 to 4% by weight of (meth)acrylic acid wherein the weight percentages of a), b), c) and d) are relative to the total weight of component B,component C) is a hydroxy-functional microdispersion, comprising a solution of an hydroxypolymer and a preparation of one or more polyesters and/or (meth)acrylic copolymers which contain carboxyl and/or hydroxyl groups, wherein up to half of the polyester and/or copolymer molecules may each be esterified with one molecule of maleic acid or maleic anhydride, the hydroxypolymer being prepared by the polymerisation, in the preparation, of one or more hydroxyalkyl (meth)acrylates in admixture with one or more unsaturated monomers which are different therefrom,component D) is one or more aliphatic polyisocyanates,component E) is .epsilon.-caprolactam, andcomponent F) is one or more primary monoamines, andwherein the amount of (meth)acrylic copolymers and/or polyesters which is contained in components A), B), C) is 50 to 80% by weight, the amount of polymers B) is 5 to 30% by weight, the amount of microparticles contained in C) is 1 to 5% by weight, the amount of diisocyanates D) is 7 to 33% by weight, the amount of .epsilon.-caprolactam E) is 2 to 9% by weight, and the amount of primary monoamines F) is 1 to 5% by weight, wherein the percentages by weight are given with respect to the solids content in each case and add up to 100% by weight.
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이 특허에 인용된 특허 (2)
Bederke Klaus (Sprockhvel DEX) Dahm Ralf (Wermelskirchen DEX) Kerber Hermann (Wuppertal DEX) Schubert Walter (Wuppertal DEX) Hermann Friedrich (Wuppertal DEX) Reifferscheidt Heinz-Walter (Bochum DEX), Composition suitable as a rheology-influencing agent, a method for its preparation and its use in coating media.
Short, William T.; Ottaviani, Robert A.; Hart, Donald J., Sag control of high solid polyurethane clearcoats by urea thixotrope/acrylic microgel systems.
Saliya, Rajesh Gopalan; Yokoyama, Ayumu, Solvent borne coating composition having improved sag resistance and process for producing coatings therefrom.
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