Dental compositions comprising a fatty mono(meth)acrylate
申请人:3M INNOVATIVE PROPERTIES COMPANY
公开号:US10022306B2
公开(公告)日:2018-07-17
Presently described are dental compositions comprising one or more fatty mono(meth)acrylates, methods of use, dental articles, and methods of making dental compositions. It has been found that a relatively low concentration of a fatty mono(meth)acrylate can improve the handling characteristics of a dental composition by reducing the tendency of the composition to stick to a dental instrument and/or by reducing the tendency of a dental composition to string when being manipulated by a dental instrument. In one embodiment, a hardenable dental composition is described comprising a polymerizable resin composition comprising at least one multifunctional ethylenically unsaturated monomer; 0.2 to 10 wt-% of one or more fatty mono(meth)acrylate monomers; and at least 50 wt-% of inorganic oxide filler.
A pressure-sensitive adhesive is provided that is a dried product of a latex composition, which is formed from an emulsion composition. The latex composition and the emulsion composition are also provided. The emulsion composition has droplets that contain various monomers plus a (meth)acrylate polymer dissolved in the monomers. Additionally, an article containing a layer of the pressure-sensitive adhesive and a method of forming the pressure-sensitive adhesive are provided. The pressure-sensitive adhesives often have both high peel adhesion and high shear strength (i.e., high cohesive strength or high shear holding power).
The invention provides a polymer comprising at least one vinyl ester; and at least one acrylic ester of a branched alcohol, wherein the branched alcohol is a branched C16-C32 alcohol. The invention also provides compositions comprising these polymers.
The invention relates to a polymer composition that can be obtained by means of the free radical polymerisation of A) 95-40 wt. % of alkyl (meth)acrylate containing Ai) 20-95 wt. % of at least one alkyl (meth)acrylate with 16 to 40 C-atoms in the alcohol group, and Aii) 5-80 wt. % of at least one (meth)acrylic acid ester of a C8-C22 alcohol carrying a C6-C20 alkyl group in the 2-position relative to the hydroxyl group, in the presence of B) 5-60 wt. % ethylene copolymer. The invention also relates to a method for producing same and to the use of same as a flow improver for mineral oils and mineral oil distillates.
本发明涉及一种聚合物组合物,可通过自由基聚合 A) 95-40 重量份的烷基(甲基)丙烯酸酯,其中 Ai) 20-95 重量份的至少一种烷基(甲基)丙烯酸酯,其醇基中含有 16-40 个 C 原子,以及 Aii) 5-80 重量份的至少一种(甲基)丙烯酸酯。%的至少一种 C8-C22 醇的(甲基)丙烯酸酯,在相对于羟基的 2 位上带有 C6-C20 烷基,在有 B) 5-60 重量%的乙烯共聚物存在的情况下。本发明还涉及一种生产方法,以及将其用作矿物油和矿物油馏分的流动性改进剂。
Viscosity index improver and lube oil containing the same
申请人:——
公开号:US20040077509A1
公开(公告)日:2004-04-22
Viscosity index improvers, are disclosed, comprising oil-soluble copolymer (A) comprising units of 5-90% by weight of a monomer (a) represented by the general formula:
CH
2
═C(R
1
)—COO—(A—O)
n
—R (
1
)
wherein R
1
is H or CH
3
, A is a C
2-4
alkylene group, n is 0 or an integer of 1-20, and R is a branched C
18-36
alkyl group, free from any polymethylene group containing more than 16 carbon atoms; units of 5-90% by weight of at least one monomer (b) selected from the group consisting of C
8-17
alkyl (meth)acrylates and straight-chain C
18-24
alkyl (meth)acrylates, and units of 5-50% by weight of a monomer (c) having at least one group selected from hydroxyl, amide and carboxyl groups.
The viscosity index improvers are useful as additives for lube oils, such as gear oils, transmission fluids, traction oils, hydraulic oils and engine oils.
本发明公开了粘度指数改进剂,由油溶性共聚物(A)组成,该共聚物由 5-90%(按重量计)的单体(a)单元组成,单体(a)由通式表示:
CH
2
═C(R
1
)-COO-(A-O)
n
-R (
1
)
其中 R
1
是 H 或 CH
3
A 是 C
2-4
烯基,n 为 0 或 1-20 的整数,R 为支链 C
18-36
烷基,不含任何含 16 个以上碳原子的聚亚甲基; 5-90%(按重量计)的至少一种单体(b)单元,选自 C
8-17
烷基(甲基)丙烯酸酯和直链 C
18-24
(甲基)丙烯酸烷基酯和直链 C 18-24 烷基(甲基)丙烯酸酯组成的组中选出的单体(b)的重量单位为 5-50%,该单体(c)具有至少一个选自羟基、酰胺基和羧基的基团。
粘度指数改进剂可用作润滑油的添加剂,如齿轮油、传动液、牵引油、液压油和发动机油。