Hard shell soft core latex
US4413068A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1981 |
| Grant date | Nov 1, 1983 |
| Priority date | — |
| Expiry date | Jul 2, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Paper coating compositions manufactured from a novel latex comprising about 40 to 60 weight percent of heterogeneous polymer particles which have: PA0 (1) an initial domain, comprising about 50% by volume of the particle which is a polymer of a monomer composition comprising: PA1 (a) From about 55 to about 65 parts by weight of a monovinylidene aromatic monomer; PA1 (b) From about 45 to about 35 parts by weight of an aliphatic C.sub.4-6 conjugated diene monomer; and per 100 parts by weight of the total of said monovinylidene aromatic monomer and said aliphatic C.sub.4-6 conjugated diene monomer; PA1 (c) from about 0.5 to 5 parts by weight of C.sub.3-5 ethylenically unsaturated carboxylic acid; and PA1 (d) from about 0.5 to 5 parts by weight of a C.sub.3-6 ethylenically unsaturated primary amide; and PA0 (2) a subsequent domain comprising about 50% by volume of the particle which is a polymer of a monomer compo- sition comprising: PA1 (a) From about 75 to 85 parts by weight of a monovinylidene aromatic monomer; PA1 (b) From about 25 to 15 parts by weight of an aliphatic C.sub.4-6 conjugated diene monomer and per 100 parts by weight of the total of said monovinylidene aromatic monome…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.