摘要:
A toner resin composition and toner is provided, wherein said toner resin composition comprises a high molecular weight resin having a peak molecular weight of about 100,000-4,000,000, or a gel content of about 20% or more is blended with another resin comprising at least a low molecular weight component (having a peak molecular weight of about 3,000-50,000, making up about 60-95 wt % of the resin weight) and a high molecular weight component (having a peak molecular weight of about 100,000-4,000,000, making up about 5-40 wt % of another resin weight).
摘要:
A toner resin composition and toner is provided, wherein said toner resin composition comprises a high molecular weight resin having a peak molecular weight of about 100,000-4,000,000, or a gel content of about 20% or more is blended with another resin comprising at least a low molecular weight component (having a peak molecular weight of about 3,000-50,000, making up about 60-95 wt % of the resin weight) and a high molecular weight component (having a peak molecular weight of about 100,000-4,000,000, making up about 5-40 wt % of another resin weight).
摘要:
Disclosed herein is a resin composition for toner mainly composed of a graft polymer which is formed by (a) 90 to 99.9 percent by weight of a copolymer formed by copolymerizing a styrene monomer and (meth)acrylic ester to contain at least 50 percent by weight of the styrene monomer and (b) 0.1 to 10 percent by weight of an ethylene-vinyl acetate copolymer having a saponification value of 10 to 30 and a softening point of 70.degree. to 200.degree. C. This resin composition is prepared by graft-polymerizing the copolymer (a) and the ethylene-vinyl acetate copolymer (b) under presence of a peroxide polymerization initiator. When a polyvalent metal compound (c) is employed, 85 to 99.9 percent by weight of the copolymer (a) and 0.1 to 10 percent by weight of the ethylene-vinyl acetate copolymer (b) are graft-polymerized under presence of 0.01 to 5 percent by weight of the polyvalent metal compound (c) and a peroxide polymerization initiator.
摘要:
A toner resin composition is provided which is superior in anti-offset properties, anti-smearing properties and low temperature fixability, has superior image stability even when the copier is used for a long duration of time, and is not prone to aggregation. The toner resin composition mainly comprises a vinyl-type copolymer(s) which contains a low polymer component which is cross-linked using a cross-linking agent comprising diacrylate or dimethacrylate obtained from a diol which has a linear chain with a carbon number of 5 or more with no branches, or a branch(es) with a carbon number of 1 or less and has a peak molecular weight in the molecular weight distribution curve of from about 4.times.10.sup.3 to 8.times.10.sup.4 and a non-cross-linked high polymer component which has a peak molecular weight in the molecular weight distribution curve of from about 1.times.10.sup.5 to 4.times.10.sup.6, wherein said vinyl-type copolymer mainly comprises styrene-type monomers with (meth)acrylic ester monomers and/or other vinyl-type monomers as structural units.
摘要:
To provide a toner resin composition and toner which has superior anti-offset properties, low temperature fixability and anti-blocking properties, and gives sufficiently stable high-quality images even when copying is done over a long duration of time. This toner resin composition is a toner resin composition comprising a low molecular weight vinyl polymer component and a high molecular weight vinyl polymer component which comprising styrene-type monomers and (meth)acrylic esters as structural units of said polymer components and having peaks of the molecular weight distribution in the region of molecular weights from about 4.times.10.sup.3 to about 8.times.10.sup.4 and in the region of molecular weights from about 1.times.10.sup.5 to about 4.times.10.sup.6, wherein said high molecular weight vinyl polymer component contains about 97 wt % or more of styrene-type monomers as structural units for said polymer component, and a styrene polymer with a weight average molecular weight of about 300,000 or higher, or a gel content of about 20 wt % or higher makes up 50 wt % or more of it. The target toner is obtained by using this toner resin composition.
摘要:
A toner whose main binder is a vinyl-type copolymer which has a styrene-type monomer and/or a (meth)acrylic ester monomer as constituent units wherein the vinyl-type copolymer has peaks of the molecular weight distribution at least in the range from 3.times.10.sup.3 to 4.times.10.sup.4 and in the range from 3.times.10.sup.5 to 8.times.10.sup.6, and the BET specific surface area of the main binder is 0.02-0.2 m.sup.2 /g.
摘要:
There are disclosed methods for producing fermented milk and whey that enable effective production in high yield of fermented milk and whey having high content of an ACEI peptide that is highly safe and applicable to pharmaceuticals, functional foods, health foods, and the like. The methods are: a method including the steps of mixing lactic acid bacteria and a starting material containing milk by stirring to prepare a mixed material, and fermenting the mixed material under stirring so that curd pieces and whey containing an angiotensin converting enzyme inhibitory peptide are generated, whereby fermented milk containing the curd pieces and the whey containing the angiotensin converting enzyme inhibitory peptide is produced; and a method including the steps of subjecting the resulting fermented milk to centrifugation and/or filter pressing to separate and recover whey.
摘要:
There are disclosed methods for producing fermented milk and whey that enable effective production in high yield of fermented milk and whey having high content of an ACEI peptide that is highly safe and applicable to pharmaceuticals, functional foods, health foods, and the like. The methods are: a method including the steps of mixing lactic acid bacteria and a starting material containing milk by stirring to prepare a mixed material, and fermenting the mixed material under stirring so that curd pieces and whey containing an angiotensin converting enzyme inhibitory peptide are generated, whereby fermented milk containing the curd pieces and the whey containing the angiotensin converting enzyme inhibitory peptide is produced; and a method including the steps of subjecting the resulting fermented milk to centrifugation and/or filter pressing to separate and recover whey.
摘要:
In a method of purifying whey separated from lactic acid fermentation liquid by electrodialysis wherein said whey contains angiotensin-converting enzyme inhibiting peptides, the improvement which comprises using an anion exchange membrane having a permeability of diffusion coefficient in the range of 3.0 to 9.0×10−6 cm/sec. An anion exchange membrane having a permeability of diffusion coefficient in the range of 5.0 to 7.0×10−6 cm/sec. is more efficiently used. The product is particularly suited to produce granules and tablets.
摘要翻译:在通过电渗析从乳酸发酵液中分离乳清的方法中,其中所述乳清含有血管紧张素转换酶抑制肽,其改进包括使用扩散系数的渗透性在3.0至9.0×10 -6范围内的阴离子交换膜 厘米/秒。 具有5.0〜7.0×10 -6 cm /秒范围内的扩散系数的渗透性的阴离子交换膜。 更有效地使用。 该产品特别适用于生产颗粒和片剂。
摘要:
A toner resin composition, as well as a toner prepared therefrom, are disclosed which are excellent in fixability, offset resistance and storage stability, and which result in reduced occurrence of DF staining.The toner resin composition includes (a) a vinyl copolymer containing 25 or lower % by weight of molecular species having molecular weights of 200,000 or higher; and (b) 3 to 10% by weight of ethylene-based olefin polymer which has a DSC-determined peak (melting point) within a range of 85-100.degree. C., a weight average molecular weight (Mw) within a range of 500-900, a number average molecular weight (Mn) within a range of 500-900, and a melt viscosity of 10 to 17 cps at 100.degree. C.